K Gegenfurtner

Summary

Affiliation: University of Giessen
Country: Germany

Publications

  1. pmc Object knowledge modulates colour appearance
    Christoph Witzel
    Department of Psychology, University of Giessen, Otto Behaghel Straße 10F, 35394 Giessen, Germany e mail
    Iperception 2:13-49. 2011
  2. ncbi request reprint Color vision
    Karl R Gegenfurtner
    Department of Psychology, Giessen University, Otto Behaghel Strasse 10, 35394 Giessen, Germany
    Annu Rev Neurosci 26:181-206. 2003
  3. ncbi request reprint Cortical mechanisms of colour vision
    Karl R Gegenfurtner
    Department of Psychology, Giessen University, Otto Behaghel Strasse 10, 35394 Giessen, Germany
    Nat Rev Neurosci 4:563-72. 2003
  4. pmc The senses
    K Gegenfurtner
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat, Giessen, Germany
    J Physiol 566:5. 2005
  5. ncbi request reprint A comparison of pursuit eye movement and perceptual performance in speed discrimination
    Karl R Gegenfurtner
    Department of Psychology, Justus Liebig University, Giessen, Germany
    J Vis 3:865-76. 2003
  6. doi request reprint Improved visual sensitivity during smooth pursuit eye movements
    Alexander C Schütz
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat Giessen, Otto Behaghel Strasse 10F, D 35394 Giessen, Germany
    Nat Neurosci 11:1211-6. 2008
  7. doi request reprint Competition between color and luminance for target selection in smooth pursuit and saccadic eye movements
    Miriam Spering
    Department of Psychology, Justus Liebig University, Giessen, Germany
    J Vis 8:16.1-19. 2008
  8. doi request reprint Effects of salience and reward information during saccadic decisions under risk
    Martin Stritzke
    Department of Psychology, Giessen University, Otto Behaghel Str 10F, 35394 Giessen, Germany
    J Opt Soc Am A Opt Image Sci Vis 26:B1-13. 2009
  9. doi request reprint Differential aging of motion processing mechanisms: evidence against general perceptual decline
    Jutta Billino
    Department of Experimental Psychology, Justus Liebig University, Otto Behaghel Str 10F, D 35394 Giessen, Germany
    Vision Res 48:1254-61. 2008
  10. doi request reprint Chromatic discrimination of natural objects
    Thorsten Hansen
    Department of Psychology, Justus Liebig University, Giessen, Germany
    J Vis 8:2.1-19. 2008

Detail Information

Publications60

  1. pmc Object knowledge modulates colour appearance
    Christoph Witzel
    Department of Psychology, University of Giessen, Otto Behaghel Straße 10F, 35394 Giessen, Germany e mail
    Iperception 2:13-49. 2011
    ..We found that knowledge about the typical colour influences the colour appearance of artificial objects. This effect was particularly strong along the daylight axis...
  2. ncbi request reprint Color vision
    Karl R Gegenfurtner
    Department of Psychology, Giessen University, Otto Behaghel Strasse 10, 35394 Giessen, Germany
    Annu Rev Neurosci 26:181-206. 2003
    ..Though there are some brain areas that are more sensitive to color than others, color vision emerges through the combined activity of neurons in many different areas...
  3. ncbi request reprint Cortical mechanisms of colour vision
    Karl R Gegenfurtner
    Department of Psychology, Giessen University, Otto Behaghel Strasse 10, 35394 Giessen, Germany
    Nat Rev Neurosci 4:563-72. 2003
  4. pmc The senses
    K Gegenfurtner
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat, Giessen, Germany
    J Physiol 566:5. 2005
  5. ncbi request reprint A comparison of pursuit eye movement and perceptual performance in speed discrimination
    Karl R Gegenfurtner
    Department of Psychology, Justus Liebig University, Giessen, Germany
    J Vis 3:865-76. 2003
    ..In this model about three times the noise level in the independent signals will mask any correlation due to the common perturbation signal...
  6. doi request reprint Improved visual sensitivity during smooth pursuit eye movements
    Alexander C Schütz
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat Giessen, Otto Behaghel Strasse 10F, D 35394 Giessen, Germany
    Nat Neurosci 11:1211-6. 2008
    ..During pursuit, facilitation of the parvocellular system may reduce motion blur for stationary objects and increase sensitivity to speed changes of the tracked object...
  7. doi request reprint Competition between color and luminance for target selection in smooth pursuit and saccadic eye movements
    Miriam Spering
    Department of Psychology, Justus Liebig University, Giessen, Germany
    J Vis 8:16.1-19. 2008
    ..These substantial differences in target selection imply that target selection processes for pursuit and saccadic eye movements use distinctly different weights for color and luminance stimuli...
  8. doi request reprint Effects of salience and reward information during saccadic decisions under risk
    Martin Stritzke
    Department of Psychology, Giessen University, Otto Behaghel Str 10F, 35394 Giessen, Germany
    J Opt Soc Am A Opt Image Sci Vis 26:B1-13. 2009
    ..Our results indicate that processing both of reward information and of stimulus saliency affect the programming of saccades, with a dominating contribution of stimulus saliency for eye movements with faster latencies...
  9. doi request reprint Differential aging of motion processing mechanisms: evidence against general perceptual decline
    Jutta Billino
    Department of Experimental Psychology, Justus Liebig University, Otto Behaghel Str 10F, D 35394 Giessen, Germany
    Vision Res 48:1254-61. 2008
    ..We suggest that differential age effects on the perception of specific motion types might indicate that specialized neuronal processing mechanisms differ in their vulnerability to physiological changes during aging...
  10. doi request reprint Chromatic discrimination of natural objects
    Thorsten Hansen
    Department of Psychology, Justus Liebig University, Giessen, Germany
    J Vis 8:2.1-19. 2008
    ..Our results show that discrimination of chromatic textures, either synthetic or natural, differs from that of simple uniform patches when the chromatic variation is centered at the adaptation point...
  11. doi request reprint Motion processing at low light levels: Differential effects on the perception of specific motion types
    Jutta Billino
    Justus Liebig University, Giessen, Germany
    J Vis 8:14.1-10. 2008
    ..Findings suggest that very early retinal signal processing can have complex effects on the perception of different motion types, which is generally considered to rely on cortical areas...
  12. doi request reprint A comparison of localization judgments and pointing precision
    Karl R Gegenfurtner
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat, Otto Behaghel Str, Giessen, Germany
    J Vis 7:11.1-12. 2007
    ..The results are in agreement with the idea that the signals determining the perceived location of an object are used to guide the motor system in pointing toward it...
  13. doi request reprint Color appearance of familiar objects: effects of object shape, texture, and illumination changes
    Maria Olkkonen
    Department of Psychology, Justus Liebig University, Giessen, Germany
    J Vis 8:13.1-16. 2008
    ..We conclude that the visual identity of an object has a measurable effect on color perception, and that this effect is robust under illuminant changes, indicating its potential significance as an additional mechanism for color constancy...
  14. ncbi request reprint Temporal properties of the chromatic and achromatic Craik-O'Brien-Cornsweet effect
    Frédéric Devinck
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat, Otto Behaghel Str 10F, 35394 Giessen, Germany
    Vision Res 47:3385-93. 2007
    ..Instead, our results are consistent with the spatial filtering properties of the luminance and chromatic systems...
  15. doi request reprint Independence of color and luminance edges in natural scenes
    Thorsten Hansen
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat Giessen, Giessen, Germany
    Vis Neurosci 26:35-49. 2009
    ..Color vision may have evolved in response to the natural scene statistics to gain access to this independent information...
  16. doi request reprint Chromatic contrast sensitivity during optokinetic nystagmus, visually enhanced vestibulo-ocular reflex, and smooth pursuit eye movements
    Alexander C Schütz
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat, Otto Behaghel Str 10F, 35394 Giessen, Germany
    J Neurophysiol 101:2317-27. 2009
    ..This result indicates similarities between slow-phase OKN and SPEM, which are distinct from VOR...
  17. ncbi request reprint Grasping visual illusions: consistent data and no dissociation
    Volker H Franz
    University of Giessen, Giessen, Germany
    Cogn Neuropsychol 25:920-50. 2008
    ..This suggests that the Ebbinghaus illusion deceives a common representation of object size that is used by perception and action...
  18. doi request reprint Cortical networks for motion processing: effects of focal brain lesions on perception of different motion types
    Jutta Billino
    Justus Liebig Universitat, Giessen, Germany
    Neuropsychologia 47:2133-44. 2009
    ..We propose a network for motion processing involving widely distributed cortical areas...
  19. ncbi request reprint Age effects on the perception of motion illusions
    Jutta Billino
    Department for Experimental Psychology, Justus Liebig University, Otto Behaghel Strasse 10F, 35394 Giessen, Germany
    Perception 38:508-21. 2009
    ..Perceptual differences due to age provide the opportunity to improve our understanding of illusory motion and point to specific underlying mechanisms...
  20. pmc Does the noise matter? Effects of different kinematogram types on smooth pursuit eye movements and perception
    Alexander C Schütz
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat, Giessen, Germany
    J Vis 10:26. 2010
    ..This suggests that under our conditions, the pursuit system integrates across all directions of motion but not across all speeds...
  21. doi request reprint Receptive fields for smooth pursuit eye movements and motion perception
    Kurt Debono
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat, Otto Behaghel Str 10F, 35394 Giessen, Germany
    Vision Res 50:2729-39. 2010
    ..The narrow direction bandwidth (26 angular degrees full width at half height) and small spatial extent (8 degrees of visual angle standard deviation) correspond closely to tuning parameters of neurons in the middle temporal area (MT)...
  22. doi request reprint Categorical color constancy for simulated surfaces
    Maria Olkkonen
    Department of Psychology, Justus Liebig University Giessen, Germany
    J Vis 9:6.1-18. 2009
    ..This indicates a possible relationship between perceptual color constancy and the ability to consistently communicate colors...
  23. doi request reprint Effects of viewing time, fixations, and viewing strategies on visual memory for briefly presented natural objects
    Gesche M Huebner
    Justus Liebig University of Giessen, Fachbereich 06, Psychologie und Sportwissenschaft, Abteilung Allgemeine Psychologie, Otto Behaghel Strasse 10F, 35394 Giessen, Germany
    Q J Exp Psychol (Hove) 63:1398-413. 2010
    ..Memory performance was not affected by this design manipulation, thus also supporting the idea that the number and duration of fixations are not closely coupled to memory performance...
  24. doi request reprint Color perception in the intermediate periphery of the visual field
    Thorsten Hansen
    Department of Psychology, Justus Liebig University, 35394 Giessen, Germany
    J Vis 9:26.1-12. 2009
    ..We found that chromatic detection gets worse with increasing eccentricity but is still possible even at large eccentricities. Our results show that chromatic detection at these eccentricities is mediated by cone-opponent mechanisms...
  25. doi request reprint Visual processing, learning and feedback in the primate eye movement system
    Julia Trommershäuser
    Department of Psychology, Giessen University, Otto Behaghel Str 10F, 35394 Giessen, Germany
    Trends Neurosci 32:583-90. 2009
    ..We conclude that these properties make the saccadic system an ideal model for studying both the behavioral and neural mechanisms for human voluntary and involuntary choice behavior...
  26. doi request reprint Improved visual sensitivity during smooth pursuit eye movements: temporal and spatial characteristics
    Alexander C Schütz
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat, Giessen, Germany
    Vis Neurosci 26:329-40. 2009
    ..5 cpd. The results of both experiments are consistent with an increased contrast gain of the parvocellular retinogeniculate pathway...
  27. pmc Grasping isoluminant stimuli
    Urs Kleinholdermann
    Department of Experimental Psychology, University of Giessen, Giessen, Germany
    Exp Brain Res 197:15-22. 2009
    ..Overall, our results do not support the view that isoluminance of stimulus and background impedes the planning of a grasping movement...
  28. doi request reprint Object recognition during foveating eye movements
    Alexander C Schütz
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat, Otto Behaghel Str 10F, 35394 Giessen, Germany
    Vision Res 49:2241-53. 2009
    ..If the target moved and the saccade was followed by pursuit, letter recognition performance was on average 16% lower than if the target was stationary and the saccade was followed by fixation...
  29. ncbi request reprint Temporal contrast sensitivity during smooth pursuit eye movements
    Alexander C Schütz
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat, Giessen, Germany
    J Vis 7:3.1-15. 2007
    ..The loss of sensitivity for motion opposite to pursuit direction can be interpreted as feature-based attention to the pursuit direction...
  30. ncbi request reprint Geometric-optical illusions at isoluminance
    Kai Hamburger
    Department for Experimental Psychology, Justus Liebig University Giessen, Otto Behaghel Strasse 10F, 35394 Giessen, Germany
    Vision Res 47:3276-85. 2007
    ....
  31. ncbi request reprint Motion aftereffect elicits smooth pursuit eye movements
    Doris I Braun
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat, Otto Behaghel Str 10F, 35394 Giessen, Germany
    J Vis 6:671-84. 2006
    ..The agreement between perception and pursuit holds over a variety of stimulus conditions that modulate the magnitude of the MAE...
  32. ncbi request reprint The spatio-temporal tuning of the mechanisms in the control of saccadic eye movements
    Brian J White
    Justus Liebig Universitat Giessen, Allgemeine Psychologie, Otto Behaghel Str 10F, D 35394 Giessen, Germany
    Vision Res 46:3886-97. 2006
    ..The results are consistent with the idea that the spatio-temporal signals used for perception are the same as those used by the mechanisms driving saccadic eye movements...
  33. ncbi request reprint Visually guided movements to color targets
    Brian J White
    Justus Liebig Universitat Giessen, Abteilung Allgemeine Psychologie, Otto Behaghel Strasse 10F, 35394, Giessen, Germany
    Exp Brain Res 175:110-26. 2006
    ..Taken together, the results show that human observers can efficiently use pure chromatic signals to guide actions...
  34. ncbi request reprint Higher level chromatic mechanisms for image segmentation
    Thorsten Hansen
    Department of Psychology, Justus Liebig University, Giessen, Germany
    J Vis 6:239-59. 2006
    ..Models with four broadly tuned cardinal mechanisms or multiple narrowly tuned mechanisms failed to reproduce the data. Our results suggest an important role for multiple, broadly tuned mechanisms in image segmentation...
  35. ncbi request reprint Classification images for chromatic signal detection
    Thorsten Hansen
    Department of Psychology, University of Giessen, Germany
    J Opt Soc Am A Opt Image Sci Vis 22:2081-9. 2005
    ....
  36. ncbi request reprint Effects of contrast on smooth pursuit eye movements
    Miriam Spering
    Psychologisches Institut, Justus Liebig Universitat, Giessen, Germany
    J Vis 5:455-65. 2005
    ..Therefore, the smooth pursuit motor response shows the same kind of slowing at low contrast that was demonstrated in previous studies on perception...
  37. ncbi request reprint Effects of structured nontarget stimuli on saccadic latency
    Brian J White
    Justus Liebig Universitat Giessen, Abteilung Allgemeine Psychologie, Otto Behaghel Strasse 10F, D 35394 Giessen, Germany
    J Neurophysiol 93:3214-23. 2005
    ..The results are consistent with the idea that only a spatially confined object leads to a discharge of collicular fixation neurons...
  38. doi request reprint The discrimination of chromatic textures
    Martin Giesel
    Department of Psychology, Justus Liebig University, 35394 Giessen, Germany
    J Vis 9:11.1-28. 2009
    ..We found that a model with eight mechanisms accounted for the effect of chromatic variation within the stimuli and provided a better fit to the discrimination thresholds than a four mechanisms model...
  39. ncbi request reprint Spatial distortions and processing latencies in the onset repulsion and Fröhlich effects
    Dirk Kerzel
    Justus Liebig Universitat Giessen, FB 06 Psychologie und Sportwissenschaft, Otto Behaghel Strasse 10F, 35394 Giessen, Germany
    Vision Res 44:577-90. 2004
    ..Second, motor judgments are offset opposite to the direction of target motion. This bias is unique to motor judgments (pointing) and may be partially explained by attentional repulsion...
  40. ncbi request reprint Neuronal processing delays are compensated in the sensorimotor branch of the visual system
    Dirk Kerzel
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat Giessen, Otto Behaghel Strasse 10F, 35394 Giessen, Germany
    Curr Biol 13:1975-8. 2003
    ..The sensorimotor system extrapolates the position of moving targets to allow for precise localization of moving targets despite neuronal latencies...
  41. ncbi request reprint The influence of the Brentano illusion on eye and hand movements
    Denise D J de Grave
    General Psychology, Justus Liebig University, Giessen, Germany
    J Vis 6:727-38. 2006
    ..This favors the interpretation that the eyes and the hand use a common motor command but each with a different relative contribution of vector coding...
  42. ncbi request reprint Color scaling of discs and natural objects at different luminance levels
    Thorsten Hansen
    Department of Psychology, University of Giessen, Giessen, Germany
    Vis Neurosci 23:603-10. 2006
    ..No such selective increase was found for outline shapes. We conclude that the distribution of hues in natural objects with a characteristic object color can have a profound effect on color scaling and color appearance...
  43. ncbi request reprint Motion-induced illusory displacement reexamined: differences between perception and action?
    Dirk Kerzel
    FB 06 Psychologie und Sportwissenschaft, Abteilung Allgemeine Psychologie, Justus Liebig Universitat Giessen, Otto Behaghel Str 10F, 35394, Giessen, Germany
    Exp Brain Res 162:191-201. 2005
    ..Further, the target was mislocalized toward the fovea with motor judgments, whereas the target was displaced away from the fovea relative to line probes...
  44. ncbi request reprint Distractor interference during smooth pursuit eye movements
    Miriam Spering
    Justus Liebig Universitat Giessen, Allgemeine Psychologie, Giessen, Germany
    J Exp Psychol Hum Percept Perform 32:1136-54. 2006
    ..The contributions of perceptual mislocalization and spatial attention to the vertical deviation in pursuit are discussed...
  45. ncbi request reprint Contrast sensitivity during the initiation of smooth pursuit eye movements
    Alexander C Schütz
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat, Otto Behaghel Str 10F, 35394, Giessen, Germany
    Vision Res 47:2767-77. 2007
    ..This attenuation might be due to an attentional deficit, because the stimulus required the focus of attention during the programming of the following eye movement...
  46. ncbi request reprint Contrast and assimilation in motion perception and smooth pursuit eye movements
    Miriam Spering
    Department of Psychology, Justus Liebig University Giessen, Otto Behaghel Str 10F, D 35394 Giessen, Germany
    J Neurophysiol 98:1355-63. 2007
    ..We conclude that the human motion system uses these computations to optimally accomplish different functions: image segmentation for object motion perception and velocity estimation for the control of smooth pursuit eye movements...
  47. ncbi request reprint Effects of spatial and temporal context on color categories and color constancy
    Thorsten Hansen
    Department of Psychology, Justus Liebig University Giessen, Giessen, Germany
    J Vis 7:2. 2007
    ..Color category boundaries tended to rotate away from the illumination color. This variation was largest under full context conditions where highest degrees of color constancy were obtained...
  48. ncbi request reprint Contextual effects on smooth-pursuit eye movements
    Miriam Spering
    Department of Psychology, Justus Liebig University Giessen, Otto Behaghel Strasse 10F, D 35394 Giessen, Germany
    J Neurophysiol 97:1353-67. 2007
    ..We therefore provide evidence for the use of absolute and relative motion cues, or motion assimilation and motion contrast, for the control of smooth-pursuit eye movements...
  49. doi request reprint Precision of speed discrimination and smooth pursuit eye movements
    Christoph Rasche
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat, Otto Behagel Str 10F, 35394 Giessen, Germany
    Vision Res 49:514-23. 2009
    ..Our results show that, for the stimuli we used, the motor system contributes at least 50% to the total variability of smooth pursuit eye movements during the initiation phase...
  50. ncbi request reprint Memory modulates color appearance
    Thorsten Hansen
    Abteilung Allgemeine Psychologie, Justus Liebig Universitat Giessen, Otto Behaghel Str 10F, 35394 Giessen, Germany
    Nat Neurosci 9:1367-8. 2006
    ..These results show that color sensations are not determined by the incoming sensory data alone, but are significantly modulated by high-level visual memory...
  51. doi request reprint Visual orienting in dynamic broadband (1/f) noise sequences
    Christoph Rasche
    Justus Liebig Universitat, Giessen, Germany
    Atten Percept Psychophys 72:100-13. 2010
    ..That error is certainly one of the primary factors making gaze-fixation prediction in complex scenes difficult. Supplemental figures for this study may be downloaded from http://app.psychonomic-journals.org/content/supplemental...
  52. doi request reprint Saccadic facilitation in natural backgrounds
    Brian J White
    Allgemeine Psychologie, Justus Liebig Universitat, Otto Behaghel Str 10F, 35394 Giessen, Germany
    Curr Biol 18:124-8. 2008
    ....
  53. ncbi request reprint The dynamics of visual pattern masking in natural scene processing: a magnetoencephalography study
    Jochem W Rieger
    Department of Neurology II, Otto von Guericke University, Magdeburg, Germany
    J Vis 5:275-86. 2005
    ..Our data also indicate that as little as 20 ms of undistorted processing is sufficient for above-chance discrimination of a scene from a distracter...
  54. ncbi request reprint Cone contributions to colour constancy
    Oliver Rinner
    Max Planck Institut für biologische Kybernetik, Tubingen, Germany
    Perception 31:733-46. 2002
    ..Our results show that constant cone ratios are not necessary for colour constancy...
  55. ncbi request reprint Illusory bending of a rigidly moving line segment: effects of image motion and smooth pursuit eye movements
    Lore Thaler
    Department of Psychology, The Ohio State University, Columbus, OH 43210, USA
    J Vis 7:9. 2007
    ..A measure of these changes is presented, which is highly correlated with observers' numerical ratings of rubberiness...
  56. ncbi request reprint The contributions of color to recognition memory for natural scenes
    Felix A Wichmann
    Max Planck Institut für biologische Kybernetik, Tubingen, Germany
    J Exp Psychol Learn Mem Cogn 28:509-20. 2002
    ..The results can be accounted for within a multiple memory systems framework...
  57. doi request reprint Contextual effects on motion perception and smooth pursuit eye movements
    Miriam Spering
    Department of Psychology, New York University, New York, USA
    Brain Res 1225:76-85. 2008
    ..While perception and pursuit are closely linked, we show that they can behave quite distinctly when required by the visual context...
  58. ncbi request reprint Advantages and disadvantages of human dichromacy
    Lindsay T Sharpe
    Institute of Ophthalmology, University College London, London, United Kingdom
    J Vis 6:213-23. 2006
    ....
  59. doi request reprint Predicting the recognition of natural scenes from single trial MEG recordings of brain activity
    Jochem W Rieger
    Department of Neurology II, Otto von Guericke University, Leipziger Str 44, 39120 Magdeburg, Germany
    Neuroimage 42:1056-68. 2008
    ..In sum our results clearly demonstrate that lSVMs can reliably predict natural scene recognition from single trial MEG-activation measures and can be a useful tool for analyzing predictive brain function...
  60. ncbi request reprint Phase noise and the classification of natural images
    Felix A Wichmann
    Max Planck Institut für biologische Kybernetik, Spemannstr 38, 72076 Tubingen, Germany
    Vision Res 46:1520-9. 2006
    ..Additional color information improves the categorization performance by 2%...