国際ジャーナルへの論文掲載情報

2015年8月 7日 13:26 office | 個別ページ

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