Neural network involved in time perception: an fMRI study comparing long and short interval estimation.
LE BIHAN, Denis
Service Hospitalier Frédéric Joliot [SHFJ]
Service NEUROSPIN [NEUROSPIN]
IFR de Neuroimagerie Fonctionnelle [IFR 49]
Human Brain Research Center [Kyoto] [HBRC]
Service Hospitalier Frédéric Joliot [SHFJ]
Service NEUROSPIN [NEUROSPIN]
IFR de Neuroimagerie Fonctionnelle [IFR 49]
Human Brain Research Center [Kyoto] [HBRC]
RENAULT, Bernard
Neurosciences cognitives et imagerie cérébrale [NCIC]
Laboratoire de Chimie des polymères organiques [LCPO]
< Réduire
Neurosciences cognitives et imagerie cérébrale [NCIC]
Laboratoire de Chimie des polymères organiques [LCPO]
Langue
en
Article de revue
Ce document a été publié dans
Human Brain Mapping. 2005, vol. 25, n° 4, p. 433-41
Wiley
Résumé en anglais
In this study, long ( approximately 1,300 ms) and short duration ( approximately 450 ms) estimation trials in an event-related functional MRI (fMRI) study were contrasted in order to reveal the regions within a time ...Lire la suite >
In this study, long ( approximately 1,300 ms) and short duration ( approximately 450 ms) estimation trials in an event-related functional MRI (fMRI) study were contrasted in order to reveal the regions within a time estimation network yielding increased activation with the increase of the duration to be estimated. In accordance with numerous imaging studies, our results showed that the presupplementary motor area (preSMA), the anterior cingulate, the prefrontal and parietal cortices, and the basal ganglia were involved in the estimation trials whatever the duration to be estimated. Moreover, only a subset of the regions within this distributed cortical and subcortical network yielded increased activation with increasing time, namely, the preSMA, the anterior cingulate cortex, the right inferior frontal gyrus (homolog to Broca's area), the bilateral premotor cortex, and the right caudate nucleus. This suggests that these regions are directly involved in duration estimation. We propose that the caudate-preSMA circuit, the anterior cingulate, and the premotor-inferior frontal regions may support a clock mechanism, decision and response-related processes, and active maintenance of temporal information, respectively.< Réduire
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