Kanai_plos_biology_sept15(published version).PDF (2.49 MB)
Time adaptation shows duration selectivity in the human parietal cortex
journal contribution
posted on 2023-06-09, 15:24 authored by Masamichi J Hayashi, Thomas Ditye, Tokiko Harada, Maho Hashiguchi, Norihiro Sadato, Synnöve Carlson, Vincent Walsh, Ryota KanaiAlthough 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 mechanisms in the IPL. Furthermore, adaptation was observed irrespective of the subject’s attention to time. Repetition of a nontemporal aspect of the stimulus (i.e., shape) did not produce neural adaptation in the IPL. These results provide neural evidence for duration-tuned representations in the human brain.
History
Publication status
- Published
File Version
- Published version
Journal
PLoS BiologyISSN
1545-7885Publisher
Public Library of ScienceExternal DOI
Issue
9Volume
13Page range
1-27Article number
e1002262Department affiliated with
- Psychology Publications
Full text available
- Yes
Peer reviewed?
- Yes