Increased influence of prior choices on perceptual decisions in autism

eLife

Helen Feigin¹  Shir Shalom-Sperber¹  Adam Zaidel¹  Ditza A Zachor² 

[1] Gonda Multidisciplinary Brain Research Center, Bar Ilan University, Ramat Gan, Israel;The Autism Center/ALUT, Shamir Medical Center, Zerifin, Israel;Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel;

关键词: autism;    priors;    perception;    psychophysics;    consistency bias;    serial dependence;    Human;   

DOI  :  10.7554/eLife.61595

来源: eLife Sciences Publications, Ltd

【 摘 要 】

Autism spectrum disorder (ASD) manifests sensory and perceptual atypicalities. Recent theories suggest that these may reflect a reduced influence of prior information in ASD. Some studies have found reduced adaptation to recent sensory stimuli in ASD. However, the effects of 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 the data using a logistic regression model to dissociate the specific effects of prior stimuli and prior choices. In both tasks, perceptual decisions were biased toward recent choices. Notably, the ‘attractive’ effect of prior choices was significantly larger in ASD (in both tasks and cohorts), while there was no difference in the influence of prior stimuli. These results challenge theories of reduced priors in ASD, and rather suggest an increased consistency bias for perceptual decisions in ASD.

【 授权许可】

CC BY