Abstract
The relationship between prefrontal cortex and cerebro-cerebeller functions in normal healthy elderly people was examined. The function of the prefrontal cortex was measured by means of a letter fluency test and D-CAT (test for the assessment of attention). The postural tremor measured by the stabilometer was employed as the indication of cerebello-thalamo-cortical circuit functions. The results of D-CAT and letter fluency test performances of the upper group who showed higher scores than the mean of the norm of the stabilometer index was compared with those of the lower group. These comparisons showed significant differences in the indices of D-CAT and letter fluency test. The results of the behavioral measures suggested a mutual relationship between prefrontal cortex and cerebello-thalamo-cortical circuit functions. Based on these findings, future tasks required for cognitive psychologists were proposed.
