The National Center for Geriatrics and Gerontology (“NCGG”) in Japan has succeeded in identifying an index finger-thumb tapping pattern unique to Alzheimer’s-type dementia through clinical research focusing on the rhythmical movement of both hands (Figure 1). This result was achieved using a waveform analysis technique for finger-tapping movement developed by Hitachi, Ltd. which allows a variety of tapping patterns to be extracted from the measurement data on motor ability using the magnetic sensors, such as the discrepancy in contact time between the fingers. This achievement opens the way to advancing tests for the early detection of Alzheimer’s-type dementia.
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