RT Journal Article
SR Electronic
T1 Differences in the temporal processing between identification and categorization of durations: a behavioral and ERP study
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 315887
DO 10.1101/315887
A1 Dorian Bannier
A1 J. Wearden
A1 Christophe C. Le Dantec
A1 Mohamed Rebaï
YR 2018
UL http://biorxiv.org/content/early/2018/05/07/315887.abstract
AB This study examined how different forms of decision-making modulate time perception. Participants performed temporal bisection and generalization tasks, requiring them to either categorize a stimulus duration as more similar to short or long standards (bisection), or identify whether or not a duration was the same as a previously-presented standard (generalization). They responded faster in the bisection task than in the generalization one for long durations. This behavioral effect was accompanied by modulation of event-related potentials (ERPs). More specifically, between 500 ms and 600 ms after stimulus offset, a late positive component (LPC), appearing in the centro-parietal region, showed lower amplitude in the bisection task than in the generalization one, for long durations, mirroring the behavioral result. Before (200-500 ms) and after (600-800 ms) this window, the amplitude of the LPC was globally larger in the generalization paradigm, independently of the presented duration. Finally, the latency of the LPC’s peak was earlier for long durations than for the short ones, indicating that the decision about the former stimuli was made earlier than for the latter ones. Taken together, these results indicate that the categorization of durations engages fewer cognitive resources than their identification.