Link to bioRxiv paper: http://biorxiv.org/cgi/content/short/2020.07.28.224808v1?rss=1 Authors: Feigin, H., Shalom-Sperber, S., Zachor, D., Zaidel, A. Abstract: Autism spectrum disorder (ASD) manifests sensory and perceptual atypicalities. Recent theories suggest that these may reflect a reduced influence of prior information in ASD. Although many studies have not found reduced long-term priors ASD, some have found reduced adaptation to recent sensory stimuli. However, the effects of recent prior stimuli and prior perceptual choices can counteract one-another. Here, we investigated this using two different tasks (in two different cohorts): (i) visual location discrimination, and (ii) multisensory (visual-vestibular) heading discrimination. We fit that data using a logistic regression model to dissociate the specific effects of prior stimuli and prior choices. In both tasks/cohorts perceptual decisions were biased toward recent choices and away from prior stimuli. Notably, the "attractive" effect of prior choices was significantly larger in ASD, while there was no difference in the influence of prior stimuli (in both tasks). These results challenge theories of reduced priors in ASD, and rather suggest an increased consistency bias for perceptual decisions in ASD. Copy rights belong to original authors. Visit the link for more info