国際ジャーナルへの論文掲載情報

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Authors: Morita, A., Morishima, Y., & Rackham, W. D.
Title: Right Dorsolateral Prefrontal Cortex Activation during a Time
Production Task: A
Functional Near-Infrared Spectroscopy Study.
Journal(書誌情報): Asian Journal of Neuroscience, 2015, Article ID 189060
doi: 10.1155/2015/189060
論文URL: http://www.hindawi.com/journals/ajn/2015/189060/
Abstract: 
Accurate time estimation is crucial for many human activities and
necessitates the use of working memory, in which the dorsolateral
prefrontal cortex (DLPFC) plays a critical role. We tested the hypothesis
that the DLPFC is activated in participants attempting time estimations
that require working memory. Specifically, we used functional near-infrared
spectroscopy (fNIRS) to investigate prefrontal cortical activity in the
brains of individuals performing a prospective time production task. We
measured cerebral hemodynamic responses in 26 healthy right-handed
university students while they marked the passage of specified time
intervals (3, 6, 9, 12, or 15 s) or performed a button-pressing (control)
task. The behavioral results indicated that participants' time estimations
were accurate with minimal variability. The fNIRS data showed that activity
was significantly higher in the right DLPFC during the time estimation task
compared to the control task. Theoretical considerations and the results of
this study suggest that DLPFC activation resulting from time estimation
indicates that the working memory system is in use.

著者Contact先の email: asamorita[at]gmail.com

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