Reduced likelihood of the Poggendorff illusion in cerebellar strokes: a clinical and neuroimaging study.

ABSTRACT: This study aimed to test our hypothesis that the cerebellum plays an important role in the generation of the optical-geometric illusion known as the Poggendorff illusion, the mechanism of which has been explained by accumulated experience with natural scene geometry. A total of 79 participants, comprising 28 patients with isolated cerebellar stroke, 27 patients with isolated cerebral stroke and 24 healthy controls, performed Poggendorff illusion tasks and 2 different control tasks. We also investigated core brain regions underpinning changes in the experience of the illusion effect using multivariate lesion-symptom mapping. Our results indicate that patients with isolated cerebellar stroke were significantly less likely to experience the Poggendorff illusion effect than patients with isola

SUBMITTER: Higashiyama Y 

PROVIDER: S-EPMC10018644 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature