Dissociated temporal and spatial impairments of microsaccade dynamics in homonymous hemianopia following ischemic stroke.

ABSTRACT: This study examines the temporal and spatial components of microsaccade dynamics in homonymous hemianopia (HH) after ischemic stroke, and their association with patients' visual impairments. The eye position data were recorded during visual field testing in 15 patients with HH and 15 controls. Microsaccade rate (temporal) and direction (spatial) dynamics in HH were analyzed across visual field sectors with varying defect depth and compared with controls. Support vector machines were trained to characterize the visual field defects in HH based on microsaccade dynamics. Patients exhibited stronger microsaccadic inhibition in the sighted areas, postponed and stronger microsaccadic inhibition in areas of residual vision (ARVs) compared to controls. Meanwhile, a rebound was evident in the sight

SUBMITTER: Gao Y 

PROVIDER: S-EPMC12859727 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature