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Abstract #3755

Evaluation of Resting State Network by Pupil Diameter Monitoring during fMRI Measurements – The Relationship between the Stability of the Pupil Diameter and the Activation in the Posterior Cingulate

Toshiharu Nakai1, Keiji Matsuda2, Sachiko Kiyama1, and Ichiro Takashima2

1NeuroImaging & Informatics, NCGG, Ohbu, Japan, 2Human Informatics Research Institute, AIST, Tsukuba, Japan

The status of the resting state performance was evaluated by using pupil diameter monitoring during fMRI sessions. The activation in the posterior cingulate was higher in the subjects who kept constant pupil diameters than those with time decay, suggesting that attempts to keep eyes open and fix them to the cross mark target may demand higher consciousness level. In other resting state networks (RSNs), no significant effect was confirmed suggesting that the RSNs are robust and not strongly affected by the tension or eye closing for a short time.

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