Genomes and Genes
Summary: An abrupt voluntary shift in ocular fixation from one point to another, as occurs in reading.
Publications321 found, 100 shown here
- Neural basis of a perceptual decision in the parietal cortex (area LIP) of the rhesus monkeyM N Shadlen
Howard Hughes Medical Institute, Department of Physiology and Biophysics, and Regional Primate Research Center, University of Washington, Seattle, Washington 98195 7290, USA
J Neurophysiol 86:1916-36. 2001..The time course of the neural response suggests that LIP accumulates sensory signals relevant to the selection of a target for an eye movement...
- Ultra-rapid object detection with saccadic eye movements: visual processing speed revisitedHolle Kirchner
Centre de Recherche Cerveau et Cognition UMR 5549, CNRS Université Paul Sabatier Toulouse 3, Faculte de Medecine de Rangueil, 31062 Toulouse Cedex 9, France
Vision Res 46:1762-76. 2006..when two scenes are simultaneously flashed in the left and right hemifields, human participants can reliably make saccades to the side containing an animal in as little as 120 ms...
- Transient induced gamma-band response in EEG as a manifestation of miniature saccadesShlomit Yuval-Greenberg
Department of Psychology, The Hebrew University of Jerusalem, Jerusalem 91905, Israel
Neuron 58:429-41. 2008..quot; The time course of the iGBR is related to an increase in the rate of saccades following a period of poststimulus saccadic inhibition...
- Fast saccades toward faces: face detection in just 100 msSébastien M Crouzet
Centre de Recherche Cerveau and Cognition, UMR, CNRS, Universite Toulouse, Toulouse, France
J Vis 10:16.1-17. 2010..J. Thorpe (2006) found that when two images are simultaneously flashed in the left and right visual fields, saccades toward the side with an animal can be initiated in as little as 120-130 ms...
- Eye movements in reading and information processing: 20 years of researchK Rayner
Department of Psychology, University of Massachusetts, Amherst 01003, USA
Psychol Bull 124:372-422. 1998..are (a) the characteristics of eye movements, (b) the perceptual span, (c) integration of information across saccades, (d) eye movement control, and (e) individual differences (including dyslexia)...
- Role of the basal ganglia in the control of purposive saccadic eye movementsO Hikosaka
Department of Physiology, Juntendo University, School of Medicine, Tokyo, Japan
Physiol Rev 80:953-78. 2000In addition to their well-known role in skeletal movements, the basal ganglia control saccadic eye movements (saccades) by means of their connection to the superior colliculus (SC)...
- Lateral habenula as a source of negative reward signals in dopamine neuronsMasayuki Matsumoto
Laboratory of Sensorimotor Research, National Eye Institute, National Institutes of Health, Bethesda, Maryland 20892 4435, USA
Nature 447:1111-5. 2007..These results suggest that the inhibitory input from the lateral habenula plays an important role in determining the reward-related activity of dopamine neurons...
- Basal ganglia orient eyes to rewardOkihide Hikosaka
Laboratory of Sensorimotor Research, National Eye Institute, National Institutes of Health, Bethesda, MD 20892, USA
J Neurophysiol 95:567-84. 2006..These data support a specific form of reinforcement learning theories, but also suggest further refinement of the theory...
- Saccade target selection and object recognition: evidence for a common attentional mechanismH Deubel
Max Planck Institut für Psychologische Forschung, Munchen, Germany
Vision Res 36:1827-37. 1996..The results favor a model in which a single attentional mechanism selects objects for perceptual processing and recognition, and also provides the information necessary for motor action...
- Neural control of voluntary movement initiationD P Hanes
Department of Psychology, Wilson Hall, Vanderbilt University, Nashville, TN 37240, USA
Science 274:427-30. 1996..This finding elucidates a specific link between motor behavior and activation of neurons in the cerebral cortex...
- Selective gating of visual signals by microstimulation of frontal cortexTirin Moore
Department of Psychology, Princeton University, Princeton, New Jersey 08544, USA
Nature 421:370-3. 2003..brief stimulation of retinotopically corresponding sites within the FEF using currents below that needed to evoke saccades. The magnitude of the enhancement depended on the effectiveness of receptive field stimuli as well as on the ..
- A common network of functional areas for attention and eye movementsM Corbetta
Department of Neurology, McDonnell Center for Higher Brain Functions, Washington University School of Medicine, St Louis, Missouri 63110, USA
Neuron 21:761-73. 1998..This anatomical overlap is consistent with the hypothesis that attentional and oculomotor processes are tightly integrated at the neural level...
- Look away: the anti-saccade task and the voluntary control of eye movementDouglas P Munoz
Centre for Neuroscience Studies, Department of Physiology, CIHR Group in Sensory Motor Systems, Queen's University, Kingston, Ontario K7L 3N6, Canada
Nat Rev Neurosci 5:218-28. 2004
- Rostral and dorsal anterior cingulate cortex make dissociable contributions during antisaccade error commissionFrida E Polli
Department of Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02215, USA
Proc Natl Acad Sci U S A 102:15700-5. 2005..These results show that accurate performance involves deactivation of the rACC and other default mode regions and suggest that both rACC and dACC contribute to the evaluation of error responses...
- Top-down versus bottom-up control of attention in the prefrontal and posterior parietal corticesTimothy J Buschman
Picower Institute for Learning and Memory, RIKEN MIT Neuroscience Research Center, and Department of Brain and Cognitive Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Science 315:1860-2. 2007..This result indicates that top-down and bottom-up signals arise from the frontal and sensory cortex, respectively, and different modes of attention may emphasize synchrony at different frequencies...
- The antisaccade: a review of basic research and clinical studiesS Everling
MRC Group in Sensory Motor Neuroscience, Department of Physiology, Queen s University, Kingston, Ontario, Canada
Neuropsychologia 36:885-99. 1998..These findings are discussed and the potential of the antisaccade task for diagnostic purposes is evaluated...
- Spatiotopic transfer of visual-form adaptation across saccadic eye movementsDavid Melcher
Faculty of Psychology, San Raffaele University, Via Olgettina 58, 20132 Milan, Italy
Curr Biol 15:1745-8. 2005..for visual stability is that internal maps of objects and their visual properties are remapped around the time of saccades, but numerous studies have demonstrated that visual patterns are not combined across saccades...
- Saccadic dysmetria and adaptation after lesions of the cerebellar cortexS Barash
Department of Neurobiology, Weizmann Institute of Science, Rehovot 76100, Israel
J Neurosci 19:10931-9. 1999..For saccades in one horizontal direction, the lesions led to an initial gross hypometria and a permanent abolition of the ..
- Binocular coordination of saccades at far and at near in children and in adultsQing Yang
Laboratoire de Physiologie de la Perception et de l Action, CNRS College de France, Paris, France
J Vis 3:554-61. 2003The goal of the study was to test the quality of binocular coordination of saccades in children and adults, and its dependency upon the viewing distance. Fourteen normal children (4...
- An examination of binocular reading fixations based on sentence corpus dataAntje Nuthmann
Department of Psychology, University of Edinburgh, Edinburgh, UK
J Vis 9:31.1-28. 2009..Fixation disparity accumulates during the course of successive saccades and fixations within a line of text, but only to an extent that does not compromise single binocular vision...
- Neuronal mechanisms of visual stabilityRobert H Wurtz
Laboratory of Sensorimotor Research, National Eye Institute, National Institutes of Health, Bldg 49, Rm 2A50, Bethesda, MD 20892 4435, USA
Vision Res 48:2070-89. 2008..For the second problem, saccadic suppression, visual masking and corollary discharge are well established mechanisms, and possible neuronal correlates have been identified for each...
- Retinal image shifts, but not eye movements per se, cause alternations in awareness during binocular rivalryLoes C J van Dam
Helmholtz Institute, Utrecht University, Utrecht, The Netherlands
J Vis 6:1172-9. 2006..Subjects viewed repetitive line patterns, enabling a distinction of saccades that did produce foveal image changes from those that did not. Subjects reported binocular rivalry alternations...
- The role of saccades in exerting voluntary control in perceptual and binocular rivalryLoes C J van Dam
Helmholtz Institute, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
Vision Res 46:787-99. 2006We have investigated the role of saccades and fixation positions in two perceptual rivalry paradigms (slant rivalry and Necker cube) and in two binocular rivalry paradigms (grating and house-face rivalry), and we compared results obtained ..
- Controlled movement processing: superior colliculus activity associated with countermanded saccadesMartin Paré
Department of Physiology, Queen s University, Kingston, Ontario, Canada K7L 3N6
J Neurosci 23:6480-9. 2003..contains neurons with activity patterns sufficient to control both the cancellation and the production of saccades. We used a countermanding task to manipulate the probability that, after the presentation of a stop signal, the ..
- Cerebellar contributions to adaptive control of saccades in humansMinnan Xu-Wilson
Department of Biomedical Engineering, Johns Hopkins School of Medicine, Baltimore, Maryland 21205, USA
J Neurosci 29:12930-9. 2009The cerebellum may monitor motor commands and through internal feedback correct for anticipated errors. Saccades provide a test of this idea because these movements are completed too quickly for sensory feedback to be useful...
- Neurophysiology and neuroanatomy of reflexive and volitional saccades: evidence from studies of humansJennifer E McDowell
Departments of Psychology and Neuroscience, Bio Imaging Research Center, Psychology Building, University of Georgia, Athens, GA 30602, USA
Brain Cogn 68:255-70. 2008..The generation of simple visually guided saccades (redirections of gaze to a visual stimulus or pro-saccades) and more complex volitional saccades require similar ..
- Reward-predicting activity of dopamine and caudate neurons--a possible mechanism of motivational control of saccadic eye movementReiko Kawagoe
Department of Physiology, Juntendo University, School of Medicine, Tokyo 113-8421, Japan
J Neurophysiol 91:1013-24. 2004....
- A model of saccade generation based on parallel processing and competitive inhibitionJ M Findlay
Centre for Vision and Visual Cognition, Department of Psychology, University of Durham, Durham DH1 3LE, England
Behav Brain Sci 22:661-74; discussion 674-721. 1999..The model accounts for a number of well-established phenomena in target-elicited saccades: the gap effect, express saccades, the remote distractor effect, and the global effect...
- Components of bottom-up gaze allocation in natural imagesRobert J Peters
Computation and Neural Systems, California Institute of Technology, Mail Code 139 74, Caltech, Pasadena, CA 91125, USA
Vision Res 45:2397-416. 2005..As models of these interactions become more accurate in predicting behaviorally-relevant salient locations, they become useful to a range of applications in computer vision and human-machine interface design...
- Visual correlates of fixation selection: effects of scale and timeBenjamin W Tatler
Sussex Centre for Neuroscience, School of Life Sciences, University of Sussex, Brighton BN1 9QG, United Kingdom
Vision Res 45:643-59. 2005..We propose that saccade target selection involves an unchanging intermediate level representation of the scene but that the high-level interpretation of this representation changes over time...
- Adaptive control of saccades via internal feedbackHaiyin Chen-Harris
Departments of Biomedical Engineering and Neurology, Johns Hopkins School of Medicine, Baltimore, Maryland 21205, USA
J Neurosci 28:2804-13. 2008Ballistic movements like saccades require the brain to generate motor commands without the benefit of sensory feedback. Despite this, saccades are remarkably accurate...
- Saccade target selection during visual searchJ M Findlay
Department of Psychology, University of Durham, U K
Vision Res 37:617-31. 1997..Accurate saccades with short latencies were common but errors sometimes occurred and search for an "oddity" target, ..
- Role of dopamine in the primate caudate nucleus in reward modulation of saccadesKae Nakamura
Laboratory of Sensorimotor Research, National Eye Institute, National Institutes of Health, Bethesda, Maryland 20892 4435, USA
J Neurosci 26:5360-9. 2006..These results suggest that reward-dependent changes in saccadic eye movements depend partly on dopaminergic modulation of neuronal activity in the caudate nucleus...
- Microsaccades counteract visual fading during fixationSusana Martinez-Conde
Barrow Neurological Institute, 350 West Thomas Road, Phoenix, Arizona 85013, USA
Neuron 49:297-305. 2006..These results reveal a direct link between suppression of microsaccades and fading and suggest a causal relationship between microsaccade production and target visibility during fixation...
- Allocentric spatial referencing of neuronal activity in macaque posterior cingulate cortexHeather L Dean
Department of Neurobiology, Duke University Medical Center, Durham, North Carolina 27710, USA
J Neurosci 26:1117-27. 2006Neuronal activity in posterior cingulate cortex (CGp) is modulated by visual stimulation, saccades, and eye position, suggesting a role for this area in visuospatial transformations...
- Attentional cues in real scenes, saccadic targeting, and Bayesian priorsMiguel P Eckstein
Department of Psychology, University of California, Santa Barbara, CA 93106, USA
Psychol Sci 17:973-80. 2006..in real scenes? Controlling for target detectability and retinal eccentricity, we recorded observers' first saccades during search for objects that appeared in expected and unexpected locations within real scenes...
- Congenital nystagmus: hypotheses for its genesis and complex waveforms within a behavioral ocular motor system modelJonathan B Jacobs
Ocular Motor Neurophysiology Laboratory, Louis Stokes Cleveland Veterans Affairs Medical Center, and Department of Neurology, Case Western Reserve University and University Hospitals of Cleveland, Cleveland, OH 44106, USA
J Vis 4:604-25. 2004..nystagmus (CN) appear to be quite complex, composed of a sustained sinusoidal oscillation punctuated by braking saccades and foveating saccades followed by periods of extended foveation...
- Memory of learning facilitates saccadic adaptation in the monkeyYoshiko Kojima
Department of Physiology, Institute of Basic Medical Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8575, Japan
J Neurosci 24:7531-9. 2004A motor learning mechanism called saccadic adaptation ensures accuracy of saccades throughout life despite growth, aging, and some pathologies of the oculomotor plant or nervous system...
- The role of the cerebellum in voluntary eye movementsF R Robinson
Department of Biological Structure University of Washington, Seattle, Washington 98195 7420, USA
Annu Rev Neurosci 24:981-1004. 2001..the posterior vermis and the caudal fastigial nucleus, to which it projects, provide a signal during horizontal saccades to make them fast, accurate, and consistent...
- Neurophysiology and neuroanatomy of reflexive and voluntary saccades in non-human primatesKevin Johnston
Centre for Neuroscience Studies, Queen s University, Kingston, Ont, Canada K7L 3N6
Brain Cogn 68:271-83. 2008..dorsolateral prefrontal cortex, anterior cingulate (see glossary) cortex and lateral intraparietal area associated with the performance of visually guided saccades, anti-saccades and memory-guided saccades in awake behaving monkeys.
- Trajectories of the human binocular fixation point during conjugate and non-conjugate gaze-shiftsH Collewijn
Department of Physiology, Faculty of Medicine, Erasmus University Rotterdam, The Netherlands
Vision Res 37:1049-69. 1997..of real, continuously visible LED targets that were either iso-vergent at 5-25 deg convergence (conjugate version saccades) or differed in vergence angle (by 5-20 deg) as well as in direction (by 5-60 deg; combined version and vergence)...
- Spatial remapping of the visual world across saccadesPaul M Bays
Institute of Cognitive Neuroscience, Institute of Neurology, University College London, Queen Square, London, UK
Neuroreport 18:1207-13. 2007..Instead, we consider a novel perspective in which the primary function of spatial remapping is to support three key nonperceptual processes: action control, sensorimotor adaptation and spatial memory...
- An adaptive algorithm for fixation, saccade, and glissade detection in eyetracking dataMarcus Nyström
Humanities Lab, Lund University, Lund, Sweden
Behav Res Methods 42:188-204. 2010..Most important, the new algorithm identifies so-called glissades, a wobbling movement at the end of many saccades, as a separate class of eye movements...
- Executive control of gaze by the frontal lobesJeffrey D Schall
Center for Integrative and Cognitive Neuroscience, Vanderbilt University, Nashville, Tennessee 37240, USA
Cogn Affect Behav Neurosci 7:396-412. 2007..Neurons in the supplementary eye field do not control directly the initiation of saccades but, instead, signal the production of errors, the anticipation and delivery of reinforcement, and the presence ..
- Vergence deficits in patients with cerebellar lesionsT Sander
Department of Neurology, University Hospitals Schleswig Holstein, Campus Lubeck, Lubeck, Germany
Brain 132:103-15. 2009..Disconjugate fast and slow vergence, conjugate smooth pursuit and saccades were binocularly recorded by a scleral search coil system in 20 patients with acute cerebellar lesions (all ..
- The eye movements of dyslexic children during reading and visual search: impact of the visual attention spanChloé Prado
Laboratoire de Psychologie et Neuro Cognition UMR5105 CNRS, Université Pierre Mendès France, 1251 Avenue Centrale BP 47, 38040 Grenoble Cedex 9, France
Vision Res 47:2521-30. 2007..The atypical eye movements of some dyslexic readers in reading thus appear to reflect difficulties to increase their VA span according to the task request...
- Supplementary eye field encodes option and action value for saccades with variable rewardNa Young So
Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
J Neurophysiol 104:2634-53. 2010We recorded neuronal activity in the supplementary eye field (SEF) while monkeys made saccades to targets that yielded rewards of variable amount and uncertainty of delivery...
- Temporal discounting of reward and the cost of time in motor controlReza Shadmehr
Department of Biomedical Engineering, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA
J Neurosci 30:10507-16. 2010..The hyperbolic cost of this delay not only accounts for kinematics of saccades in adults, it also accounts for the faster saccades of children, who temporally discount reward more steeply...
- Binocular coordination of saccades in children with vertigo: dependency on the vergence stateMaria Pia Bucci
IRIS Group LPPA, UMR 7152 CNRS College de France, 11, Place M Berthelot, Paris, France
Vision Res 46:3594-602. 2006The present study examines the quality of binocular coordination of saccades at far and near distance in 15 children with symptoms of vertigo headache and equilibrium disorders; these children show normal vestibular function but abnormal ..
- Local morphology predicts functional organization of the dorsal premotor region in the human brainCéline Amiez
Cognitive Neuroscience Unit, Montreal Neurological Institute, McGill University, Montreal, Quebec, H3A 2B4, Canada
J Neurosci 26:2724-31. 2006....
- Spatial processing in the monkey frontal eye field. II. Memory responsesM M Umeno
Laboratory of Sensorimotor Research, National Eye Institute, Bethesda, Maryland 20892, USA
J Neurophysiol 86:2344-52. 2001Monkeys and humans can easily make accurate saccades to stimuli that appear and disappear before an intervening saccade to a different location...
- Cerebellar contributions to the processing of saccadic errorsP C A van Broekhoven
Department of Neuroscience, Erasmus MC, Rotterdam 3000 CA, The Netherlands
Cerebellum 8:403-15. 2009b>Saccades are fast eye movements that direct the point of regard to a target in the visual field. Repeated post-saccadic visual errors can induce modifications of the amplitude of these saccades, a process known as saccadic adaptation...
- Trans-saccadic perceptionDavid Melcher
Center for Mind Brain Sciences and Department of Cognitive Sciences, University of Trento, Corso Bettini 31, Rovereto 38068, Italy
Trends Cogn Sci 12:466-73. 2008..We outline five principles of 'trans-saccadic perception' that could help to explain how it is possible - despite discrete sensory input and limited memory - that conscious perception across saccades seems smooth and predictable.
- How the brain obeys Hering's law: a TMS study of the posterior parietal cortexMarine Vernet
IRIS Group, CNRS College de France, 11 place Marcelin Berthelot, Paris, France
Invest Ophthalmol Vis Sci 49:230-7. 2008Human ocular saccades are not perfectly yoked; the origin of this disconjugacy (muscular versus central) remains controversial. The purpose of this study was to test a cortical influence on the binocular coordination of saccades.
- Reduced saccadic resilience and impaired saccadic adaptation due to cerebellar diseaseHeidrun Golla
Department of Cognitive Neurology, Hertie Institute for Clinical Brain Research, University of Tubingen, Hoppe Seyler Strasse 3, 72076 Tubingen, Germany
Eur J Neurosci 27:132-44. 2008..mechanism needed to avoid 'fatigue', a gradual drop in saccade amplitude during a long series of stereotypic saccades. To this end we compared the kinematics of saccades of 14 patients suffering from different forms of cerebellar ..
- A pathway in primate brain for internal monitoring of movementsMarc A Sommer
Laboratory of Sensorimotor Research, National Eye Institute, National Institutes of Health, Bethesda, MD 20892, USA
Science 296:1480-2. 2002..These results identify a pathway in the brain of the primate Macaca mulatta that conveys corollary discharge signals...
- Parallel and serial neural mechanisms for visual search in macaque area V4Narcisse P Bichot
Laboratory of Neuropsychology, National Institute of Mental Health NIMH, National Institutes of Health, Bethesda, MD 20892, USA
Science 308:529-34. 2005..Neurons also gave enhanced responses to candidate targets that were selected for saccades, or foveation, reflecting a serial component of visual search...
- Dynamic coding of behaviourally relevant stimuli in parietal cortexLouis J Toth
Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
Nature 415:165-8. 2002..However, when cue location was relevant, colour selectivity was virtually absent in LIP. These results demonstrate that selectivity of cortical neurons can change as a function of the required behaviour...
- Contribution of the monkey frontal eye field to covert visual attentionClaire Wardak
Institut des Sciences Cognitives, , , 69675 Bron, France
J Neurosci 26:4228-35. 2006..using multiple microinjections of muscimol, a GABAA agonist, in two macaque monkeys performing visually guided saccades to a single target...
- The roles of vision and eye movements in the control of activities of daily livingM Land
Sussex Centre for Neuroscience, School of Biological Sciences, University of Sussex, Brighton, UK
Perception 28:1311-28. 1999..This type of unconscious attention must be a common phenomenon in everyday life...
- The role of stimulus-driven and goal-driven control in saccadic visual selectionWieske van Zoest
Department of Cognitive Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
J Exp Psychol Hum Percept Perform 30:746-59. 2004..Instead, they indicate that visual selection is the outcome of 2 independent processes, one stimulus driven and the other goal driven, operating in different time windows...
- The antisaccade task as a research tool in psychopathology: a critical reviewSamuel B Hutton
Department of Psychology, Sussex University, Brighton, UK
Psychophysiology 43:302-13. 2006....
- Performance monitoring by the anterior cingulate cortex during saccade countermandingShigehiko Ito
Center for Integrative and Cognitive Neuroscience, Vanderbilt Vision Research Center, Department of Psychology, Wilson Hall, Vanderbilt University, Nashville, TN 37203, USA
Science 302:120-2. 2003..No neurons signaled the form of conflict engendered by interruption of saccade preparation produced in this task. These results are consistent with the hypothesis that the anterior cingulate cortex monitors the consequences of actions...
- On the role of frontal eye field in guiding attention and saccadesJeffrey D Schall
Center for Integrative and Cognitive Neuroscience, Vanderbilt Vision Research Center, Department of Psychology, Vanderbilt University, 111 21st Avenue South, 301 Wilson Hall, Nashville, TN 37240, USA
Vision Res 44:1453-67. 2004..These patterns of activity are consistent with the hypotheses that covert shifts of attention can occur without saccade production and that FEF contributes to covert as well as overt orienting...
- TMS over the left posterior parietal cortex prolongs latency of contralateral saccades and convergenceQing Yang
Laboratoire de Physiologie de la Perception et de l Action, CNRS College de France, Paris
Invest Ophthalmol Vis Sci 45:2231-9. 2004This study explored the role of the left posterior parietal cortex (PPC) in saccades, vergence, and combined saccade-vergence movements by means of transcranial magnetic stimulation (TMS) in humans.
- Timing of target discrimination in human frontal eye fieldsJacinta O'Shea
Department of Experimental Psychology, University of Oxford, UK
J Cogn Neurosci 16:1060-7. 2004..eye field (FEF) neurons discharge in response to behaviorally relevant stimuli that are potential targets for saccades. Distinct visual and motor processes have been dissociated in the FEF of macaque monkeys, but little is known ..
- Spectro-temporal factors in two-dimensional human sound localizationP M Hofman
University of Nijmegen, Department of Medical Physics and Biophysics, The Netherlands
J Acoust Soc Am 103:2634-48. 1998..These findings are incorporated in a conceptual model that accounts for the data and proposes a scheme for the temporal processing of spectral sensory information into a dynamic estimate of sound elevation...
- Age-related performance of human subjects on saccadic eye movement tasksD P Munoz
Department of Physiology, Queen s University, Kingston, Ontario, Canada
Exp Brain Res 121:391-400. 1998..Elderly subjects (60-79 years of age) had slower SRTs and longer duration saccades than other subject groups...
- Mixed pro and antisaccade performance in children and adultsElizabeth L Irving
University of Waterloo, School of Optometry, Waterloo, Canada
Brain Res 1255:67-74. 2009..It was concluded that the increased error rates of these two groups are reflective of different processing dynamics...
- Altered control of visual fixation and saccadic eye movements in attention-deficit hyperactivity disorderDouglas P Munoz
Centre for Neuroscience Studies, Canadian Institute of Health Research Group in Sensory Motor Systems, Department of Physiology, Queen s University, Kingston, Ontario, K7L 3N6 Canada
J Neurophysiol 90:503-14. 2003..In the pro-saccade task, ADHD participants had longer reaction times, greater intra-subject variance, and their saccades had reduced peak velocities and increased durations...
- Lateralized frontal eye field activity precedes occipital activity shortly before saccades: evidence for cortico-cortical feedback as a mechanism underlying covert attention shiftsTjerk P Gutteling
University Medical Center Utrecht, The Netherlands
J Cogn Neurosci 22:1931-43. 2010..This is consistent with the idea that the FEF exerts a direct modulatory influence on the visual cortex and enhances perception at the saccade end-goal...
- Development of pro- and antisaccades in children with attention-deficit hyperactivity disorder (ADHD) and healthy controlsC H Klein
Department of Psychology, Research Group Psychophysiology, University of Freiburg, Freiburg, Germany
Psychophysiology 40:17-28. 2003..c) augmented proportions of early responses (all conditions), and (d) reduced proportions of express saccades under the prosaccadic gap condition...
- Macaque V1 activity during natural vision: effects of natural scenes and saccadesSean P MacEvoy
Department of Neuroscience, Brown University, Providence, RI 02912, USA
J Neurophysiol 99:460-72. 2008In the present study, we examined the way that scene complexity and saccades combine to sculpt the temporal response patterns of V1 neurons...
- Switching between gap and overlap pro-saccades: cost or benefit?Marine Vernet
IRIS Laboratory, CNRS, FRE 3154, Service d Ophtalmologie, Assistance Publique, Hopitaux de Paris, Hôpital Européen Georges Pompidou Univ Paris V, 20, rue Leblanc, 75015 Paris, France
Exp Brain Res 197:49-58. 2009Triggering of saccades depends on the task: in the gap task, fixation point switches off and target appears after a gap period; in the overlap task, target appears while fixation point is still on...
- Anti-saccades away from faces: evidence for an influence of high-level visual processes on saccade programmingIain D Gilchrist
Department of Experimental Psychology, University of Bristol, 12a Priory Road, Bristol, BS8 1TN, UK
Exp Brain Res 173:708-12. 2006The anti-saccade task is an important tool for investigating both the generation of voluntary saccades and the suppression of involuntary, stimulus driven, saccades...
- The parallel programming of voluntary and reflexive saccadesRobin Walker
Department of Psychology, Royal Holloway, University of London, Egham, Surrey TW20 0EX, UK
Vision Res 46:2082-93. 2006..investigate the parallel programming of consecutive, stimulus-elicited ('reflexive') and endogenous ('voluntary') saccades. The mean latency of voluntary saccades, made following the first reflexive saccades in two-step conditions, was ..
- Role of the posterior parietal cortex in the initiation of saccades and vergence: right/left functional asymmetryZoi Kapoula
Laboratoire de Physiologie de la Perception et de l Action, UMR 7124 CNRS College de France, 11, place Marcelin Berthelot 75005 Paris, France
Ann N Y Acad Sci 1039:184-97. 2005This study explored in humans the role of the posterior parietal cortex (PPC) in saccades, vergence, and combined saccade-vergence movements by means of transcranial magnetic stimulation (TMS)...
- Spatial and effector processing in the human parietofrontal network for reaches and saccadesS M Beurze
Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, NL 6500 HE, Nijmegen, The Netherlands
J Neurophysiol 101:3053-62. 2009..Taken together, our results suggest that the relative weight of spatial goal and effector selectivity changes along the parietofrontal network, depending on the status of the movement plan...
- Effects of salience are short-livedMieke Donk
Department of Cognitive Psychology, Vrije Universiteit Amsterdam, Van der Boechorststraat 1, 1081BT Amsterdam, The Netherlands
Psychol Sci 19:733-9. 2008..These results suggest that salience is represented in the visual system only briefly after a visual image enters the brain...
- Stable individual differences across images in human saccadic eye movementsMonica S Castelhano
Department of Psychology, University of Massachusetts Amherst, Amherst, MA, USA
Can J Exp Psychol 62:1-14. 2008..Eye movement characteristics differ across individuals, but there is a great deal of consistency within individuals when viewing different types of images...
- Individual differences in the asymmetry of binocular saccades, analysed with mixed-effects modelsWilhelm Bernhard Kloke
, Ardeystr. 67, D-44139 Dortmund, Germany
Biol Psychol 73:220-6. 2006We analysed the reliability of individual differences in parameters of binocular saccadic eye movements. During saccades between isovergent targets, the movement of the right and left eye are not exactly symmetrical (conjugate)...
- Perceptual decision making in less than 30 millisecondsTerrence R Stanford
Department of Neurobiology and Anatomy, Wake Forest University School of Medicine, Winston Salem, North Carolina, USA
Nat Neurosci 13:379-85. 2010....
- Cerebellar lesions impair rapid saccade amplitude adaptationA Straube
Department of Neurology, Klinikum Grosshadern, Munich, Germany
Neurology 57:2105-8. 2001....
- Visual error is the stimulus for saccade gain adaptationC T Noto
Department of Biological Structure and Regional Primate Research Center, University of Washington, Seattle, WA 98195 7420, USA
Brain Res Cogn Brain Res 12:301-5. 2001Saccade accuracy is fundamental to clear vision. The brain maintains saccade accuracy by altering commands for saccades that are consistently inaccurate...
- Disruption of saccadic adaptation with repetitive transcranial magnetic stimulation of the posterior cerebellum in humansNed Jenkinson
Nuffield Department of Surgery, University of Oxford, Oxford, UK
Cerebellum 9:548-55. 2010..It is possible to rapidly adapt saccades in the laboratory by introducing a discrepancy between the intended and actual saccadic target...
- Developmental functions for saccadic eye movement parameters derived from pro- and antisaccade tasksC Klein
Department of Psychology, University of Freiburg, Germany
Exp Brain Res 139:1-17. 2001..34) reaction times (RT) and their standard deviations (0.26-0.45), and negligible for the proportion of express saccades. (3) The age variables (particularly Age(-1)), furthermore, predicted some of the effects of the experimental ..
- When are attention and saccade preparation dissociated?Artem V Belopolsky
Department of Cognitive Psychology, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
Psychol Sci 20:1340-7. 2009To understand the mechanisms of visual attention, it is crucial to know the relationship between attention and saccades. Some theories propose a close relationship, whereas others view the attention and saccade systems as completely ..
- Preparatory activations across a distributed cortical network determine production of express saccades in humansJordan P Hamm
Department of Psychology, University of Georgia, Athens, Georgia 30602, USA
J Neurosci 30:7350-7. 2010..These processes were examined with dense-array EEG as humans completed saccades in a "gap" paradigm known to elicit bimodal variability in response times, including separate ..
- Auditory saccade impairment after central thalamus lesionsM Versino
Dipartimento Scienze Neurologiche, Universita di Pavia, Italy
J Neurol Neurosurg Psychiatry 68:234-7. 2000Visual and auditory saccades were studied in three patients with an isolated lesion located in the central thalamus...
- Binocular motor coordination during saccades and fixations while reading: a magnitude and time analysisMarine Vernet
IRIS Laboratory, CNRS, FRE 3154 Assistance Publique des Hôpitaux de Paris, Paris, France
J Vis 9:2. 2009Reading involves saccades and fixations. Misalignment of the eyes should be small enough to allow sensory fusion. Recent studies reported disparity of the eyes during fixations. This study examines disconjugacy, i.e...
- Functional MRI mapping of brain activation during visually guided saccades and antisaccades: cortical and subcortical networksTetsuya Matsuda
Department of Neuropsychiatry, Nihon University School of Medicine, 30 1 Oyaguchi Kamimachi, Itabashi ku, Tokyo 173 8610, Japan
Psychiatry Res 131:147-55. 2004..functional magnetic resonance imaging (fMRI), we investigated the neural networks required to inhibit reflexive saccades and to voluntarily generate saccades...
- Idiosyncratic characteristics of saccadic eye movements when viewing different visual environmentsT J Andrews
Department of Neurobiology, Duke University Medical Center, Durham, NC 27710, USA
Vision Res 39:2947-53. 1999..The independent covariance of eye movements during different visual tasks shows that saccadic eye movements during active tasks like reading or visual search differ from those engaged during the passive inspection of visual scenes...
- Development of prosaccade and antisaccade task performance in participants aged 6 to 26 yearsC Klein
Research Group Psychophysiology, University of Freiburg, Germany
Psychophysiology 38:179-89. 2001..In three age groups (6-7, 10-11, 18-26 years), saccades during pro- and antisaccade tasks with 200-ms gap and overlap and during a fixation task were measured...
- Judgments of path, not heading, guide locomotionRichard M Wilkie
Institute of Psychological Sciences, University of Leeds, Leeds, United Kingdom
J Exp Psychol Hum Percept Perform 32:88-96. 2006..In light of these results, the authors suggest it is unlikely that heading is primarily used by the visual system to support active steering...
- Prosaccades and antisaccades to onsets and color singletons: evidence that erroneous prosaccades are not reflexiveRichard Godijn
Beckman Institute, University of Illinois, 405 North Mathews Avenue, Urbana, IL 61801, USA
Exp Brain Res 172:439-48. 2006..The results showed that participants often made erroneous saccades toward the onset or color singleton when they were the search target in the antisaccade condition, but not when ..
- Movement intention is better predicted than attention in the posterior parietal cortexRodrigo Quian Quiroga
Division of Biology, California Institute of Technology, Pasadena, California 91125, USA
J Neurosci 26:3615-20. 2006..Moreover, neural signals in the parietal reach region (PRR) gave better predictions of reaches than saccades, whereas signals in the lateral intraparietal area (LIP) gave better predictions of saccades than reaches...
- Foveal visual strategy during self-motion is independent of spatial attentionMin Wei
Department of Neurobiology, Washington University School of Medicine, St. Louis, Missouri 63110, USA
J Neurosci 26:564-72. 2006....
- Target selection for visually guided reaching in macaqueJoo Hyun Song
Smith Kettlewell Eye Research Institute, 2318 Fillmore St, San Francisco, CA 94115, USA
J Neurophysiol 99:14-24. 2008..Previous studies of saccades and attention have shown that target selection in this task is easier when a greater number of homogenous ..
- Task-dependent effects of social attention on saccadic reaction timesMichael J Koval
Graduate Program in Neuroscience, University of Western Ontario, London, ON, N6G 2V4, Canada
Exp Brain Res 167:475-80. 2005..These findings suggest that the effect of social gaze cues on SRTs is task dependent...
- Working memory can guide pop-out searchDavid Soto
Behavioural Brain Sciences, School of Psychology, University of Birmingham, Birmingham B15 2TT, UK
Vision Res 46:1010-8. 2006..Despite this, the prime in WM affected responses latencies and the direction of the first saccade. Top-down search, guided by the contents of WM, can modulate selection even when salient bottom-up cues are present...
- Relation of frontal eye field activity to saccade initiation during a countermanding taskJoshua W Brown
Vanderbilt Vision Research Center, Department of Psychology, Vanderbilt University, Nashville, TN 37203, USA
Exp Brain Res 190:135-51. 2008..Previous research found that saccades are initiated when the activity of movement-related neurons reaches a threshold, and saccades are withheld if the ..
- FUNCTION OF MIDBRAIN STRUCTURES IN EYE MOVEMENT CONTROLDAVID WAITZMAN; Fiscal Year: 2005..the velocity to position integrator which is essential in oculomotor feedback control should generate hypermetric saccades. 3)Determine if the map of saccade amplitude in the intermediate and deep layers of the SC is modified following ..
- OCULOMOTOR CONTROL AND GAIT IN PARKINSON DISEASEGAMMON EARHART; Fiscal Year: 2009..H2a: Participants with PD will demonstrate slower, smaller saccades at turn initiation and will make many small saccades while controls will make a few large saccades during turns...
- CONTROL OF EYELIDS IN NORMAL AND PATHOLOGICAL STATESLESLIE EVINGER; Fiscal Year: 1993..Patients with abnormally slow saccadic eye movements can make normal velocity saccades when they combine the saccade with a voluntary blink...
- Coding of Auditory Space in the Avian BrainJOSE L PENA; Fiscal Year: 2010..are processed in parallel in order to control two output variables (horizontal and vertical coordinates of head saccades)...
- Neural Integration of Eye and Head MovementsNeeraj Gandhi; Fiscal Year: 2007..neural discharge and extraocular motor neurons is demonstrated by recording activity during head-restrained saccades. In contrast, a relationship between spikes and neck motor neurons is only inferred by observing activity during ..
- CEREBELLAR NUCLEI IN EYE MOVEMENT CONTROL AND ADAPTATIONFarrel Robinson; Fiscal Year: 2003b>Saccades, smooth pursuit, and vergence need to be extremely accurate to provide clear vision...
- CORTICAL PLANNING AND CONTROL OF SMOOTH PURSUITStephen Heinen; Fiscal Year: 2001To maintain clear vision of an object at the fovea, the eyes must be moved to that object. Rapid eye movements, or saccades are used to acquire stationary objects, while smooth pursuit is used to stabilize moving objects...
- Eye Movement Control in Normal Elderly and MCIAdam L Boxer; Fiscal Year: 2010..Age-related changes occur in the brain network that controls saccades and covert shifts of attention, and the structure and function of this network are also highly sensitive to the ..
- The Neurophysiology of Spatial VisionMICHAEL ELLIS GOLDBERG; Fiscal Year: 2010..before an intervening eye movement, but they also slightly mislocalize saccade targets flashed immediately around saccades. Aim 3 is to study the spatial and temporal courses of the remapping process and the effects of inactivation of ..
- CORTICAL CONTRIBUTIONS TO THE CONTROL OF EYE MOVEMENTSMark Segraves; Fiscal Year: 2004..The FEF contains neurons whose firing is related to the generation of saccades, and projects to the superior colliculus as well as to other oculomotor regions of the brainstem...
- DYNAMIC MACAQUE BASAL GANGLIA SACCADE NETWORKSANN GRAYBIEL; Fiscal Year: 2004..Evidence suggests that this circuit is a release circuit for saccades. The oculomotor zone has been investigated intensively with conventional single unit recording methods in highly ..
- NEUROPHYSIOLOGY OF THE OCULOMOTOR SYSTEMAlbert Fuchs; Fiscal Year: 2003..The objective of this application is to investigate how the brain ensures that rapid eye movements, called saccades, land accurately on objects of interest...
- COORDINATION OF VOLUNTARY EYE MOVEMENTSRichard Krauzlis; Fiscal Year: 2002..data indicating that there is functional overlap between the neural mechanisms for pursuit and saccades. The objective of this application is to investigate the nature and degree of this functional overlap In ..
- FUNCTIONAL ORGANIZATION OF THE FRONTAL EYE FIELDCharles Bruce; Fiscal Year: 2003..studies of neurons in the saccadic region of FEF (FEFsac) find different combinations of activity related to saccades, visual inputs, and eye position as well as to behavioral states including memory and anticipation; similar ..
- INVESTIGATION AND TREATMENT OF OCULAR MOTOR DISORDERSRICHARD JOHN LEIGH; Fiscal Year: 2010..during the prior funding period: The first project concerns the beginning and ending of rapid eye movements (saccades)...
- COORDINATION OF VOLUNTARY EYE MOVEMENTSRichard Krauzlis; Fiscal Year: 2005..Although pursuit and saccades have long been viewed as distinct motor systems, there is growing evidence that certain crucial steps are shared...
- Dynamic Basal Ganglia Saccade NetworksANN GRAYBIEL; Fiscal Year: 2007..the substantia nigra pars reticulata which in turn projects to, and inhibits the superior colliculus and inhibits saccades thereby. This basal ganglia pathway is used as a prime example of the release functions of the basal ganglia...
- Dynamic Basal Ganglia Saccade NetworksAnn M Graybiel; Fiscal Year: 2010..the substantia nigra pars reticulata which in turn projects to, and inhibits the superior colliculus and inhibits saccades thereby. This basal ganglia pathway is used as a prime example of the release functions of the basal ganglia...
- Eye Movements and Visual PerceptionBart Krekelberg; Fiscal Year: 2009..is therefore invoked to blunt visual perception and hide imperfections in the coordinate transform during saccades. Our hypothesis is that both mechanisms are implemented in early visual cortical areas...