Abstract Summary
The purpose of this study was to clarify the influence of eye closing during standing on EEG-EEG coherence and EEG-EMG coherence. Eleven healthy young persons participated in this study. Two-leg and one-leg standing were performed for 30 seconds. EEG, EMG, velocity of center of pressure (COP) in the longitudinal direction were measured. EEG was measured in Fp1, Cz, P3, and EMG was measured from the right tibialis anterior muscle. CzFp1-coh and CzP3-coh significantly increased in the theta wave band at eye closing. CzTA-coh was not significantly changed by eye closing. The increase of CzFp1-coh and CzP3-coh in the theta wave band was considered to be one cause that the connection of brain network between the cortex increased due to eye closing. In addition, it was suggested that postural control of standing at eye closing was performed by strengthening the corticocortical coupling rather than the cortical-muscular coupling.
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