caa a22 4500 46325015X CHVBK 20180405153337.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10803-006-0172-4 doi (NATIONALLICENCE)springer-10.1007/s10803-006-0172-4 Atypical Categorical Perception in Autism: Autonomy of Discrimination? [Elektronische Daten] [Isabelle Soulières, Laurent Mottron, Daniel Saumier, Serge Larochelle] A diminished top-down influence has been proposed in autism, to account for enhanced performance in low-level perceptual tasks. Applied to perceptual categorization, this hypothesis predicts a diminished influence of category on discrimination. In order to test this hypothesis, we compared categorical perception in 16 individuals with and 16 individuals without high-functioning autism. While participants with and without autism displayed a typical classification curve, there was no facilitation of discrimination near the category boundary in the autism group. The absence of influence of categorical knowledge on discrimination suggests an increased autonomy of low-level perceptual processes in autism, in the form of a reduced top-down influence from categories toward discrimination. Springer Science+Business Media, Inc., 2006 Categorization nationallicence Discrimination nationallicence Categorical perception nationallicence Top-down processing nationallicence Autism nationallicence Soulières Isabelle Department of Psychology, Université de Montréal & Clinique spécialisée des troubles envahissants du développement, Hôpital Rivière-des-Prairies, 7070 Blvd Perras, H1E 1A4, Montréal, Québec, Canada aut Mottron Laurent Department of Psychiatry, Université de Montréal & Clinique spécialisée des troubles envahissants du développement, Hôpital Rivière-des-Prairies, Montréal, Québec, Canada aut Saumier Daniel Department of Neurology and Neurosurgery, and Lady Davis Institute for Medical Research, McGill University, Montréal, Québec, Canada aut Larochelle Serge Department of Psychology, Université de Montréal, Montréal, Québec, Canada aut Journal of Autism and Developmental Disorders Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 37/3(2007-03-01), 481-490 0162-3257 37:3<481 2007 37 10803 https://doi.org/10.1007/s10803-006-0172-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10803-006-0172-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Soulières Isabelle Department of Psychology, Université de Montréal & Clinique spécialisée des troubles envahissants du développement, Hôpital Rivière-des-Prairies, 7070 Blvd Perras, H1E 1A4, Montréal, Québec, Canada aut NATIONALLICENCE 700 1- Mottron Laurent Department of Psychiatry, Université de Montréal & Clinique spécialisée des troubles envahissants du développement, Hôpital Rivière-des-Prairies, Montréal, Québec, Canada aut NATIONALLICENCE 700 1- Saumier Daniel Department of Neurology and Neurosurgery, and Lady Davis Institute for Medical Research, McGill University, Montréal, Québec, Canada aut NATIONALLICENCE 700 1- Larochelle Serge Department of Psychology, Université de Montréal, Montréal, Québec, Canada aut NATIONALLICENCE 773 0- Journal of Autism and Developmental Disorders Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 37/3(2007-03-01), 481-490 0162-3257 37:3<481 2007 37 10803 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer