Varying Timescales of Stimulus Integration Unite Neural Adaptation and Prototype Formation.

ABSTRACT: Human visual perception is both stable and adaptive. Perception of complex objects, such as faces, is shaped by the long-term average of experience as well as immediate, comparative context. Measurements of brain activity have demonstrated corresponding neural mechanisms, including norm-based responses reflective of stored prototype representations, and adaptation induced by the immediately preceding stimulus. Here, we consider the possibility that these apparently separate phenomena can arise from a single mechanism of sensory integration operating over varying timescales. We used fMRI to measure neural responses from the fusiform gyrus while subjects observed a rapid stream of face stimuli. Neural activity at this cortical site was best explained by the integration of sensory experience

SUBMITTER: Mattar MG 

PROVIDER: S-EPMC4942354 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature