Research Topics
| Mariano SigmanSummaryAffiliation: Universidad de Buenos Aires Country: Argentina Publications
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Detail Information
Publications
Dynamics of the central bottleneck: dual-task and task uncertaintyMariano Sigman
Unité INSERM 562, Cognitive Neuroimaging, Service Hospitalier Frederic Joliot, CEA DRM DSV, Orsay, France
PLoS Biol 4:e220. 2006..On this basis, we propose a hierarchical model of cognitive architecture that provides a synthesis of task-switching and PRP paradigms...
Brain mechanisms of serial and parallel processing during dual-task performanceMariano Sigman
Physics Department, Integrative Neuroscience Laboratory, University of Buenos Aires, 1428 Buenos Aires, Argentina
J Neurosci 28:7585-98. 2008..The results provide physiological evidence for the coexistence of serial and parallel processes within a cognitive task...- Illusory displacement due to object substitution near the consciousness thresholdMariano Sigman
Laboratory of Integrative Neuroscience, Physics Department, UBA, Buenos Aires, Argentina
J Vis 8:13.1-10. 2008..Thus, mutual exclusion of surfaces appears as a cause of masking... - Cortical deficits of emotional face processing in adults with ADHD: its relation to social cognition and executive functionAgustin Ibanez
Institute of Cognitive Neurology INECO, Favaloro University, Buenos Aires, Argentina
Soc Neurosci 6:464-81. 2011..This is the first report to reveal an adult ADHD-specific impairment in the cortical modulation of emotion for faces and an association between N170 cortical measures and ToM and EF... - The neural basis of decision-making and reward processing in adults with euthymic bipolar disorder or attention-deficit/hyperactivity disorder (ADHD)Agustin Ibanez
Laboratory of Experimental Psychology and Neuroscience, Institute of Cognitive Neurology, Favaloro University, Buenos Aires, Argentina
PLoS ONE 7:e37306. 2012..Nevertheless, no previous report has assessed a decision-making task that includes the examination of the neural correlates of reward and gambling in adults with ADHD and those with BD... - Delays without mistakes: response time and error distributions in dual-taskJuan Esteban Kamienkowski
Integrative Neuroscience Laboratory, Physics Department, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
PLoS ONE 3:e3196. 2008..of each processing stage are affected by interference. Thus, a critical test to this hypothesis is to explore whether the quality of the decision is unaffected by a concurrent task... - The cortical processing of facial emotional expression is associated with social cognition skills and executive functioning: a preliminary studyAgustín Petroni
National Scientific and Technical Research Council CONICET, Buenos Aires, Argentina
Neurosci Lett 505:41-6. 2011..Executive functioning ability also correlated with the cortical discrimination of complex emotional stimuli. Our findings suggest that the cortical processing of facial emotional expression is associated with social cognition skills... - The brain's router: a cortical network model of serial processing in the primate brainAriel Zylberberg
Laboratory of Integrative Neuroscience, Physics Department, University of Buenos Aires, Buenos Aires, Argentina
PLoS Comput Biol 6:e1000765. 2010.... - Eye fixations indicate men's preference for female breasts or buttocksBruno Dagnino
Department of Physics, University of Buenos Aires, Buenos Aires, Argentina
Arch Sex Behav 41:929-37. 2012..We found that the first and last fixations were systematically directed towards the self-reported preferred trait... - Neural processing of emotional facial and semantic expressions in euthymic bipolar disorder (BD) and its association with theory of mind (ToM)Agustin Ibanez
Laboratory of Experimental Psychology and Neuroscience, Institute of Cognitive Neurology and Institute of Neuroscience, Favaloro University, Buenos Aires, Argentina
PLoS ONE 7:e46877. 2012..Adults with bipolar disorder (BD) have cognitive impairments that affect face processing and social cognition. However, it remains unknown whether these deficits in euthymic BD have impaired brain markers of emotional processing... - Limits on introspection: distorted subjective time during the dual-task bottleneckGuido Corallo
Integrative Neuroscience Laboratory, Physics Department, University of Buenos Aires, Buenos Aires, Argentina
Psychol Sci 19:1110-7. 2008..These results suggest that introspective estimates of time spent on a task tightly correlate with the period of availability of central processing resources... - State-dependent changes of connectivity patterns and functional brain network topology in autism spectrum disorderPablo Barttfeld
Laboratory of Integrative Neuroscience, Physics Department, FCEyN UBA and IFIBA, CONICET, Argentina
Neuropsychologia 50:3653-62. 2012..These results pave the path for diagnosis of mental pathologies based on functional brain networks obtained from a library of mental states... - The dynamics of sensory buffers: geometric, spatial, and experience-dependent shaping of iconic memoryMartin Graziano
Integrative Neuroscience Laboratory, Physics Department, Universidad de Buenos Aires, Argentina
J Vis 8:9.1-13. 2008..We discuss our results on the context of a model of information access to executive control and how it is affected by learning and attention... - Parsing a cognitive task: a characterization of the mind's bottleneckMariano Sigman
Unité INSERM 562, Cognitive Neuroimaging Service Hospitalier Frédéric Joliot, CEA DRM DSV, Orsay Cedex, France
PLoS Biol 3:e37. 2005..The other stages, mapping the numeral to an internal quantity and executing the motor response, can be carried out in parallel with another task. Changing the duration of these processes has no significant effect on the variance... - The human Turing machine: a neural framework for mental programsAriel Zylberberg
Laboratory of Integrative Neuroscience, Physics Department, FCEyN UBA and IFIBA, CONICET, Pabellon 1, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Trends Cogn Sci 15:293-300. 2011..Productions change the state of sensory and mnemonic neurons and iteration of such cycles provides a basis for mental programs... 
The neural code for written words: a proposalStanislas Dehaene
INSERM Unit 562, Cognitive Neuroimaging, Service Hospitalier Frederic Joliot, CEA DRM DSV 4 Place du general Leclerc, 91401 Orsay Cedex, France
Trends Cogn Sci 9:335-41. 2005..Our proposal can explain why the detection of 'open bigrams' (ordered pairs of letters) constitutes an important stage in visual word recognition...- Classical conditioning in the vegetative and minimally conscious stateTristan A Bekinschtein
Institute of Cognitive Neurology, Buenos Aires, Argentina
Nat Neurosci 12:1343-9. 2009..Our results suggest that individuals with DOCs might have partially preserved conscious processing, which cannot be mediated by explicit reports and is not detected by behavioral assessment... - Neurophysiology of perceived confidenceMartin Graziano
Laboratory of Integrative Neuroscience, School of Exact and Natural Science, University of Buenos Aires, Argentina
Conf Proc IEEE Eng Med Biol Soc 2010:2818-21. 2010.... - Eye movements blink the attentional blinkJuan E Kamienkowski
Laboratory of Integrative Neuroscience, Physics Department, Exact and Natural Science School, University of Buenos Aires, Buenos Aires, Argentina
J Exp Psychol Hum Percept Perform 38:555-60. 2012..These studies support current views that episodes should have an effect on the AB and provide evidence that eye movements play an important role in the formation of episodes... - A big-world network in ASD: dynamical connectivity analysis reflects a deficit in long-range connections and an excess of short-range connectionsPablo Barttfeld
Integrative Neuroscience Laboratory, Physics Department, University of Buenos Aires, Buenos Aires, Argentina
Neuropsychologia 49:254-63. 2011..Together these results show that delta-band coherence reveal qualitative and quantitative aspects associated with ASD pathology... - Looking at Breakout: urgency and predictability direct eye eventsDiego E Shalom
Laboratory of Integrative Neuroscience, Physics Department, University of Buenos Aires, Buenos Aires, Argentina
Vision Res 51:1262-72. 2011..These results pave the path to understand the taxonomy of eye-movements on natural configurations in which stimuli and goals switch dynamically in time... - Functional segregation of cortical language areas by sentence repetitionGhislaine Dehaene-Lambertz
, , CEA/DRM/DSV, Orsay, France. gdehaene2shfj.cea.fr
Hum Brain Mapp 27:360-71. 2006..The results demonstrate the feasibility of using sentence-level adaptation to probe the functional organization of cortical language areas... - The construction of confidence in a perceptual decisionAriel Zylberberg
Laboratory of Integrative Neuroscience, Physics Department, FCEyN UBA and IFIBA CONICET, Buenos Aires, Argentina Instituto de Ingeniería Biomédica, Facultad de Ingenieria, Universidad de Buenos Aires Buenos Aires, Argentina Department of Vision and Cognition, Netherlands Institute for Neuroscience, An Institute of the Royal Netherlands Academy of Arts and Sciences Amsterdam, Netherlands
Front Integr Neurosci 6:79. 2012..Our findings challenge classical models of subjective confidence-which posit that the difference of evidence in favor of each choice is the seed of the confidence signal... - Decision making during the psychological refractory periodAriel Zylberberg
Laboratory of Integrative Neuroscience, Physics Department, FCEyN UBA and IFIBA, CONICET, Pabellon 1, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Curr Biol 22:1795-9. 2012.... - The tell-tale heart: heart rate fluctuations index objective and subjective events during a game of chessMaría J Leone
Physics Department, School of Sciences, University of Buenos Aires Buenos Aires, Argentina
Front Hum Neurosci 6:273. 2012..Our data demonstrate that even if HR constitutes a relatively broad marker integrating a myriad of physiological variables, its dynamic is rich enough to reveal relevant episodes of inner thought... - The taste of musicBruno Mesz
Laboratorio de Acústica y Percepción Sonora, Universidad Nacional de Quilmes, 1888, Buenos Aires, Argentina
Perception 40:209-19. 2011.... - Eye gaze reveals a fast, parallel extraction of the syntax of arithmetic formulasElisa Schneider
Laboratory of Integrative Neuroscience, Physics Department, University of Buenos Aires, Buenos Aires, Argentina
Cognition 125:475-90. 2012..These findings provide strong evidence for a syntactic organization for arithmetic thinking, paving the way for further comparative analysis of differences and coincidences in the instantiation of recursion in language and mathematics... - Pupil dilation: a fingerprint of temporal selection during the "attentional blink"Ariel Zylberberg
Laboratory of Integrative Neuroscience, Physics Department, FCEyN UBA and IFIBA, CONICET Buenos Aires, Argentina
Front Psychol 3:316. 2012..Furthermore, given the known relation between the pupil dilation and the activity of the locus coeruleus, our results also support theories that link the serial stage to the action of a specific neuromodulator, norepinephrine... - The spatial and temporal construction of confidence in the visual sceneMartin Graziano
Physics Department, Integrative Neuroscience Laboratory, Universidad de Buenos Aires, Buenos Aires, Argentina
PLoS ONE 4:e4909. 2009..Our study allowed us to asses quantitatively the temporal and spatial access to an objective response and to subjective reports... - Neurophysiological bases of exponential sensory decay and top-down memory retrieval: a modelAriel Zylberberg
Physics Department, University of Buenos Aires Buenos Aires, Argentina
Front Comput Neurosci 3:4. 2009.... - Bridging psychology and mathematics: can the brain understand the brain?Mariano Sigman
Cognitive Neuroimaging Research Unit of l Institut National de la Santé et de la recherche Médicale, Orsay, France
PLoS Biol 2:E297. 2004 - Hierarchical coding of letter strings in the ventral stream: dissecting the inner organization of the visual word-form systemFabien Vinckier
INSERM, U562 Orsay, France
Neuron 55:143-56. 2007.... - Functional organization of perisylvian activation during presentation of sentences in preverbal infantsGhislaine Dehaene-Lambertz
Institut National de la Sante et de la Recherche Medicale, U562, and Commissariat à l Energie Atomique, 4 Place du General Leclerc, 91400 Orsay, France
Proc Natl Acad Sci U S A 103:14240-5. 2006..Our results point to a complex, hierarchical organization of the human brain in the first months of life, which may play a crucial role in language acquisition in our species... - Top-down reorganization of activity in the visual pathway after learning a shape identification taskMariano Sigman
The Rockefeller University, New York, New York, USA
Neuron 46:823-35. 2005....