The time course of visual processing: from early perception to decision-making. Export

@article{citeulike:679256, abstract = {Experiments investigating the mechanisms involved in visual processing often fail to separate low-level encoding mechanisms from higher-level behaviorally relevant ones. Using an alternating dual-task event-related potential (ERP) experimental paradigm (animals or vehicles categorization) where targets of one task are intermixed among distractors of the other, we show that visual categorization of a natural scene involves different mechanisms with different time courses: a perceptual, task-independent mechanism, followed by a task-related, category-independent process. Although average ERP responses reflect the visual category of the stimulus shortly after visual processing has begun (e.g. 75-80 msec), this difference is not correlated with the subject's behavior until 150 msec poststimulus.}, address = {Centre de Recherche Cerveau et Cognition, France. rufin@cerco.ups-tlse.fr}, author = {VanRullen, R. and Thorpe, S. J.}, citeulike-article-id = {679256}, citeulike-linkout-0 = {http://jocn.mitpress.org/cgi/content/abstract/13/4/454}, citeulike-linkout-1 = {http://view.ncbi.nlm.nih.gov/pubmed/11388919}, citeulike-linkout-2 = {http://www.hubmed.org/display.cgi?uids=11388919}, day = {15}, issn = {0898-929X}, journal = {J Cogn Neurosci}, keywords = {categorization, decision, eeg}, month = {May}, number = {4}, pages = {454--461}, posted-at = {2006-08-07 23:03:43}, priority = {3}, title = {The time course of visual processing: from early perception to decision-making.}, url = {http://jocn.mitpress.org/cgi/content/abstract/13/4/454}, volume = {13}, year = {2001} }

TY - JOUR ID - citeulike:679256 L3 - citeulike-article-id:679256 N2 - Experiments investigating the mechanisms involved in visual processing often fail to separate low-level encoding mechanisms from higher-level behaviorally relevant ones. Using an alternating dual-task event-related potential (ERP) experimental paradigm (animals or vehicles categorization) where targets of one task are intermixed among distractors of the other, we show that visual categorization of a natural scene involves different mechanisms with different time courses: a perceptual, task-independent mechanism, followed by a task-related, category-independent process. Although average ERP responses reflect the visual category of the stimulus shortly after visual processing has begun (e.g. 75-80 msec), this difference is not correlated with the subject's behavior until 150 msec poststimulus. IS - 4 JF - J Cogn Neurosci SN - 0898-929X AD - Centre de Recherche Cerveau et Cognition, France. rufin@cerco.ups-tlse.fr EP - 461 TI - The time course of visual processing: from early perception to decision-making. VL - 13 SP - 454 KW - categorization KW - decision KW - eeg AU - VanRullen, R AU - Thorpe, SJ PY - 2001/05/15/ UR - http://jocn.mitpress.org/cgi/content/abstract/13/4/454 ER -