| Budget Amount *help |
¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000)
Fiscal Year 2015: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2014: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2013: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
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| Outline of Final Research Achievements |
The purpose of this study was to determine whether oscillatory brain rhythms play a role in the neural processes involved in self-monitoring attentional status. To achieve this goal, we measured cortical activity using MEG and fMRI while participants were asked to self-monitor their internal status, only initiating the presentation of a stimulus when they perceived their attentional focus to be maximal. Our results show that there was a sustained power decrease of alpha activity in the rCMA on the human medial wall, beginning approximately 430 msec after the trial start. We also show that gamma-band power (41-47 Hz) within this area was positively correlated with task performance from 40-640 msec after the trial start. We conclude that the rCMA is involved in processes governing self-monitoring of internal status. Addition to this, we succeeded the online estimation of attentional direction/readiness level by using brain activity with our newly developed the technology.
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