Subjective duration as a signature of coding efficiency: Emerging links among stimulus repetition, predictive coding, and cortical GABA levels

Published

Journal Article (Review,Scholarly Commentary)

Immediate repetition of a stimulus reduces its apparent duration relative to a novel item. Recent work indicates that this may reflect suppressed cortical responses to repeated stimuli, arising from neural adaptation and/or the predictive coding of expected stimuli. This article summarizes recent behavioral and neurobiological studies linking perceived time to the magnitude of cortical responses, including work suggesting that variations in GABA-mediated cortical inhibition may underlie some of the individual differences in time perception. We suggest that the firing of cortical neurons can be modified using simple recurrent networks with time-dependent processes that are modulated by GABA levels. These local networks feed into a core-timing network used to integrate across stimulus inputs/modalities, thereby allowing for the coordination of multiple duration ranges and effector systems.

Full Text

Duke Authors

Cited Authors

  • Matthews, WJ; Terhune, DB; van Rijn, H; Eagleman, DM; Sommer, MA; Meck, WA

Published Date

  • December 1, 2014

Published In

  • Timing & Time Perception Reviews

Volume / Issue

  • 1 /

Chapter

  • 5

Published By

Pages

  • 11

Language

  • English