Time Adaptation Shows Duration Selectivity in the Human Parietal Cortex.

ABSTRACT: Although psychological and computational models of time estimation have postulated the existence of neural representations tuned for specific durations, empirical evidence of this notion has been lacking. Here, using a functional magnetic resonance imaging (fMRI) adaptation paradigm, we show that the inferior parietal lobule (IPL) (corresponding to the supramarginal gyrus) exhibited reduction in neural activity due to adaptation when a visual stimulus of the same duration was repeatedly presented. Adaptation was strongest when stimuli of identical durations were repeated, and it gradually decreased as the difference between the reference and test durations increased. This tuning property generalized across a broad range of durations, indicating the presence of general time-representation m

SUBMITTER: Hayashi MJ 

PROVIDER: S-EPMC4574920 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature