A functional link between area MSTd and heading perception based on vestibular signals.

ABSTRACT: Recent findings of vestibular responses in part of the visual cortex--the dorsal medial superior temporal area (MSTd)--indicate that vestibular signals might contribute to cortical processes that mediate the perception of self-motion. We tested this hypothesis in monkeys trained to perform a fine heading discrimination task solely on the basis of inertial motion cues. The sensitivity of the neuronal responses was typically lower than that of psychophysical performance, and only the most sensitive neurons rivaled behavioral performance. Responses recorded in MSTd were significantly correlated with perceptual decisions, and the correlations were strongest for the most sensitive neurons. These results support a functional link between MSTd and heading perception based on inertial motion cues.

SUBMITTER: Gu Y 

PROVIDER: S-EPMC2430983 | biostudies-literature | 2007 Aug

REPOSITORIES: biostudies-literature