UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Children with autism spectrum disorder show reduced adaptation to number

Turi, M; Burr, DC; Igliozzi, R; Aagten-Murphy, D; Muratori, F; Pellicano, E; (2015) Children with autism spectrum disorder show reduced adaptation to number. Proceedings of the National Academy of Sciences , 112 (25) pp. 7868-7872. 10.1073/pnas.1504099112. Green open access

[thumbnail of Turi et al_final_revised.pdf]
Preview
Text
Turi et al_final_revised.pdf - Accepted Version

Download (626kB) | Preview

Abstract

Autism is known to be associated with major perceptual atypicalities. We have recently proposed a general model to account for these atypicalities in Bayesian terms, suggesting that autistic individuals underuse predictive information or priors. We tested this idea by measuring adaptation to numerosity stimuli in children diagnosed with autism spectrum disorder (ASD). After exposure to large numbers of items, stimuli with fewer items appear to be less numerous (and vice versa). We found that children with ASD adapted much less to numerosity than typically developing children, although their precision for numerosity discrimination was similar to that of the typical group. This result reinforces recent findings showing reduced adaptation to facial identity in ASD and goes on to show that reduced adaptation is not unique to faces (social stimuli with special significance in autism), but occurs more generally, for both parietal and temporal functions, probably reflecting inefficiencies in the adaptive interpretation of sensory signals. These results provide strong support for the Bayesian theories of autism.

Type: Article
Title: Children with autism spectrum disorder show reduced adaptation to number
Open access status: An open access version is available from UCL Discovery
DOI: 10.1073/pnas.1504099112
Publisher version: http://dx.doi.org/10.1073/pnas.1504099112
Language: English
Additional information: This version of record can be found at http://www.pnas.org/content/112/25/7868
Keywords: Autism, number perception, adaptation, aftereffect, predictive coding, priors
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Education
UCL > Provost and Vice Provost Offices > School of Education > UCL Institute of Education
UCL > Provost and Vice Provost Offices > School of Education > UCL Institute of Education > IOE - Social Research Institute
URI: https://discovery.ucl.ac.uk/id/eprint/1475287
Downloads since deposit
164Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item