Negative mood invites psychotic false perception in dementia.

ABSTRACT:

Background

There is increasing evidence for predictive coding theories of psychosis, which state that hallucinations arise from abnormal perceptual priors or biases. However, psychological processes that foster abnormal priors/biases in patients suffering hallucinations have been largely unexplored. The widely recognized relationship between affective disorders and psychosis suggests a role for mood and emotion.

Methods

Thirty-six patients with dementia with Lewy bodies (DLB), a representative condition associated with psychosis of neurological origin, and 12 patients with Alzheimer's disease (AD) were enrolled. After an experimental mood induction, the participants underwent the pareidolia test, in which visual hallucination-like illusions were evoked and measured.

Resul

SUBMITTER: Watanabe H 

PROVIDER: S-EPMC5983458 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature