Distinct early and late neural mechanisms regulate feature-specific sensory adaptation in the human visual system.

ABSTRACT: A canonical feature of sensory systems is that they adapt to prolonged or repeated inputs, suggesting the brain encodes the temporal context in which stimuli are embedded. Sensory adaptation has been observed in the central nervous systems of many animal species, using techniques sensitive to a broad range of spatiotemporal scales of neural activity. Two competing models have been proposed to account for the phenomenon. One assumes that adaptation reflects reduced neuronal sensitivity to sensory inputs over time (the "fatigue" account); the other posits that adaptation arises due to increased neuronal selectivity (the "sharpening" account). To adjudicate between these accounts, we exploited the well-known "tilt aftereffect", which reflects adaptation to orientation information in visual st

SUBMITTER: Rideaux R 

PROVIDER: S-EPMC9963156 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature