1. From the Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate School of Biomedical Engineering, Sendai, Japan (KN, HG, and RN); the Department of Public Health and Forensic Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan (AH, SK, NN, KO-M, HT, and IT); the Department of Geriatrics and Gerontology Division of Brain Sciences, Institute of Deve