Acquisition of visual priors and induced hallucinations in chronic schizophrenia.

ABSTRACT: Prominent theories suggest that symptoms of schizophrenia stem from learning deficiencies resulting in distorted internal models of the world. To test these theories further, we used a visual statistical learning task known to induce rapid implicit learning of the stimulus statistics. In this task, participants are presented with a field of coherently moving dots and are asked to report the presented direction of the dots (estimation task), and whether they saw any dots or not (detection task). Two of the directions were more frequently presented than the others. In controls, the implicit acquisition of the stimuli statistics influences their perception in two ways: (i) motion directions are perceived as being more similar to the most frequently presented directions than they really are (e

SUBMITTER: Valton V 

PROVIDER: S-EPMC6734996 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature