Exploring the Phenotype and Possible Mechanisms of Palinopsia in Visual Snow Syndrome.

ABSTRACT:

Purpose

Palinopsia (persistent afterimages and/or trailing) is a common but poorly understood symptom of the neurological condition visual snow syndrome. This study aimed to collect a phenotypical description of palinopsia in visual snow syndrome and probe for abnormalities in temporal visual processing, hypothesizing that palinopsia could arise from increased visibility of normal afterimage signals or prolonged visible persistence.

Methods

Thirty controls and 31 participants with visual snow syndrome (18 with migraine) took part. Participants completed a palinopsia symptom questionnaire. Contrast detection thresholds were measured before and after brief exposure to a spatial grating because deficient contrast adaptation could increase afterimage visibility. Temporal integra

SUBMITTER: Brooks CJ 

PROVIDER: S-EPMC11488523 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature