Significant correlation between FA or AD and the score of cognitive test (i.e., CNT) or balance test. (A) Significant positive correlation between FA of the left superior longitudinal fasciculus and the sub-score of CNT, i.e., the number of words recalled after a 20-min delayed period was observed (Spearman’s correlation coefficient r = 0.58 and p < 0.05). (B) Significant negative correlation between AD of the left superior longitudinal fasciculus and the sub-score in CNT, correct response of the auditory continuous performance test, was also observed (Spearman’s correlation coefficient r = −0.56 and p < 0.05). (C) Significant positive correlation between AD of the left inferior cerebellar peduncle and score of the balance test, i.e., the length-over-area of movement of the COP in the PC, was observed (Spearman’s correlation coefficient r = −0.72 and p < 0.05). Abbreviations: FA, fractional anisotropy; AD, axial diffusivity; CNT, Computerized NeuroCognitive Function Test; COP, center of pressure; PC, closed eyes.