Superior colliculus peri-saccadic field potentials are dominated by a visual sensory preference for the upper visual field.

ABSTRACT: The primate superior colliculus (SC) plays important sensory, cognitive, and motor processing roles. Among its properties, the SC has clear visual field asymmetries: visual responses are stronger in the upper visual field representation, whereas saccade-related motor bursts are weaker. Here, I asked whether peri-saccadic SC network activity can still reflect the SC's visual sensitivity asymmetry, thus supporting recent evidence of sensory-related signals embedded within the SC's motor bursts. I analyzed collicular peri-saccadic local field potential (LFP) modulations and found them to be much stronger in the upper visual field, despite the weaker motor bursts. This effect persisted even with saccades toward a blank, suggesting an importance of visual field location. I also found that engag

SUBMITTER: Hafed ZM 

PROVIDER: S-EPMC11914513 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature