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Perceptual content, not physiological signals, determines perceived duration when viewing dynamic, natural scenes

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Version 2 2023-06-12, 09:14
Version 1 2023-06-09, 19:43
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posted on 2023-06-12, 09:14 authored by Marta Suarez-Pinilla, Kyriacos Nikiforou, Zafeirios Fountas, Anil SethAnil Seth, Warrick RoseboomWarrick Roseboom
The neural basis of time perception remains unknown. A prominent account is the pacemaker-accumulator model, wherein regular ticks of some physiological or neural pacemaker are read out as time. Putative candidates for the pacemaker have been suggested in physiological processes (heartbeat), or dopaminergic mid-brain neurons, whose activity has been associated with spontaneous blinking. However, such proposals have difficulty accounting for observations that time perception varies systematically with perceptual content. We examined physiological influences on human duration estimates for naturalistic videos between 1-64 seconds using cardiac and eye recordings. Duration estimates were biased by the amount of change in scene content. Contrary to previous claims, heart rate, and blinking were not related to duration estimates. Our results support a recent proposal that tracking change in perceptual classification networks provides a basis for human time perception, and suggest that previous assertions of the importance of physiological factors should be tempered.

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Publication status

  • Published

File Version

  • Published version

Journal

Collabra Psychology

ISSN

2474-7394

Publisher

University of California Press

Issue

1

Volume

5

Page range

1-16

Department affiliated with

  • Informatics Publications

Research groups affiliated with

  • Sackler Centre for Consciousness Science Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2019-11-21

First Open Access (FOA) Date

2019-11-21

First Compliant Deposit (FCD) Date

2019-11-20

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