Duration estimates within a modality are integrated sub-optimally
Identifieur interne : 000205 ( Pmc/Corpus ); précédent : 000204; suivant : 000206Duration estimates within a modality are integrated sub-optimally
Auteurs : Ming Bo Cai ; David M. EaglemanSource :
- Frontiers in Psychology [ 1664-1078 ] ; 2015.
Abstract
Perceived duration can be influenced by various properties of sensory stimuli. For example, visual stimuli of higher temporal frequency are perceived to last longer than those of lower temporal frequency. How does the brain form a representation of duration when each of two simultaneously presented stimuli influences perceived duration in different way? To answer this question, we investigated the perceived duration of a pair of dynamic visual stimuli of different temporal frequencies in comparison to that of a single visual stimulus of either low or high temporal frequency. We found that the duration representation of simultaneously occurring visual stimuli is best described by weighting the estimates of duration based on each individual stimulus. However, the weighting performance deviates from the prediction of statistically optimal integration. In addition, we provided a Bayesian account to explain a difference in the apparent sensitivity of the psychometric curves introduced by the order in which the two stimuli are displayed in a two-alternative forced-choice task.
Url:
DOI: 10.3389/fpsyg.2015.01041
PubMed: 26321965
PubMed Central: 4532910
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