Impaired perception of illusory contours and cortical hypometabolism in patients with Parkinson's disease.

ABSTRACT: Neuroimaging evidence suggests that areas of the higher-order visual cortex, including the lateral occipital complex (LOC), are engaged in the perception of illusory contours; however, these findings remain unsubstantiated by human lesion data. Therefore, we assessed the presentation time necessary to perceive two types of illusory contours formed by Kanizsa figures or aligned line ends in patients with Parkinson's disease (PD). Additionally, we used ¹⁸F-fluorodeoxyglucose positron emission tomography (FDG-PET) to measure regional cerebral glucose metabolism in PD patients. Although there were no significant differences in the stimulus durations required for perception of illusory contours formed by aligned line ends between PD patients and controls, PD patients required signifi

SUBMITTER: Ishioka T 

PROVIDER: S-EPMC8385116 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature