The CDR 0 group had significantly higher scores than the CDR 0.5 group in all trials. The participants consisted of 381 clinical dementia rating (CDR) 0 subjects and 137 CDR 0.5 subjects who could perform the full set of RCFT tasks. Additionally, normative data from the learning version of the RCFT for Japanese subjects were examined, for purpose of reference. In the present study, the Rey-Osterrieth Complex Figure Test (RCFT) was given to healthy subjects and to those with MCI to determine if visual memory was maintained in these two groups. Although there have been some studies on the role of verbal memory in learning ability, there have been no reports on the part played by visual memory. Mild cognitive impairment (MCI) is a transitional state between normal aging and dementia.
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