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Titolo:
Cortical networks recruited for time perception: A monkey positron emission tomography (PET) study
Autore:
Onoe, H; Komori, M; Onoe, K; Takechi, H; Tsukada, H; Watanabe, Y;
Indirizzi:
Tokyo Metropolitan Inst Neurosci, Dept Psychol, Fuchu, Tokyo 1838526, Japan Tokyo Metropolitan Inst Neurosci Fuchu Tokyo Japan 1838526 1838526, Japan Osaka Biosci Inst, Dept Neurosci, Osaka 5650874, Japan Osaka Biosci Inst Osaka Japan 5650874 ept Neurosci, Osaka 5650874, Japan Kyoto Univ, Grad Sch Med, Dept Geriatr Med, Kyoto 6068507, Japan Kyoto Univ Kyoto Japan 6068507 d, Dept Geriatr Med, Kyoto 6068507, Japan Hamamatsu Photon KK, Cent Res Lab, Shizuoka 4348601, Japan Hamamatsu Photon KK Shizuoka Japan 4348601 Lab, Shizuoka 4348601, Japan Osaka City Univ, Grad Sch Med, Dept Syst Neurosci, Osaka 5458585, Japan Osaka City Univ Osaka Japan 5458585 Syst Neurosci, Osaka 5458585, Japan
Titolo Testata:
NEUROIMAGE
fascicolo: 1, volume: 13, anno: 2001,
pagine: 37 - 45
SICI:
1053-8119(200101)13:1<37:CNRFTP>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Soggetto:
PREFRONTAL CORTEX; NEURAL SYSTEMS; BASAL GANGLIA; RHESUS-MONKEY; CINGULATE CORTEX; UNIT-ACTIVITY; ATTENTION; NEURONS; MEMORY; BRAIN;
Keywords:
time; prefrontal cortex; monkey; PET;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Onoe, H Tokyo Metropolitan Inst Neurosci, Dept Psychol, Fuchu, Tokyo 1838526, Japan Tokyo Metropolitan Inst Neurosci Fuchu Tokyo Japan 1838526 Japan
Citazione:
H. Onoe et al., "Cortical networks recruited for time perception: A monkey positron emission tomography (PET) study", NEUROIMAGE, 13(1), 2001, pp. 37-45

Abstract

The presence of an "internal clock" in the brain has been assumed to underlie the information processing related to time. This clock plays a criticalrole in time keeping and time perception, which are closely associated with integrated functions in the brain. To identify the brain areas recruited for time keeping and time perception, we performed positron emission tomography (PET) studies with rhesus monkeys to measure regional cerebral blood how (rCBF) as an index of neural activity during time discrimination tasks of different durations ranging from 400 to 1500 ms. Changes in rCBF that covaried significantly with the durations of the target being perceived by subjects were found in the dorsolateral prefrontal cortex (DLPFC), the posterior part of the inferior parietal cortex, basal ganglia, and posterior cingulate cortex. Furthermore, a loss of neuronal function in the DLPFC caused by a local application of bicuculline resulted in the selective reduction ofperformance in time discrimination tasks. The results indicate that a neural network composed of the posterior inferior parietal cortex to the DLPFC plays a crucial role in the temporal monitoring process in time perception. (C) 2001 Academic Press.

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Documento generato il 18/01/20 alle ore 22:12:45