| Budget Amount *help |
¥23,660,000 (Direct Cost: ¥18,200,000、Indirect Cost: ¥5,460,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2014: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2013: ¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
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| Outline of Final Research Achievements |
We used magnetoencephalography (MEG) to investigate multidimensional dynamics of functional properties of the human brain network during performance of a multisensory attention task. Evoked response analysis showed that endogenous spatial attention guided by a visual cue increased auditory-evoked magnetic fields (AEFs) and somatosensory evoked magnetic fields (SEFs), which were generated in the auditory and secondary somatosensory cortices respectively. Time-frequency analysis showed that alpha and beta oscillations were desynchronized in the hemisphere contralateral to the attended side during attentional control. Graph-theoretical analysis showed that in the alpha network the betweenness centrality was rapidly increased in the prefrontal cortex whereas in the beta network it was increased in the sensorimotor cortex. Thus we revealed multidimensional dynamics of neuronal responses, neuronal oscillations and network properties in a multisensory attention task.
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