Abstract
This is study on the effect of other people's activities on elderly dementia residents by the behavior tracking survey with automated face recognition technology. 1.The majority of the activities found in the common space were “inaction”, and “conversation”. The expressions in “inaction” had the lowest SI (Smile Index). 2. The higher ability residents had the greater the SI measured. Residents with less ability in ADL exhibited lower SI. 3. This indicates that there is difference in facial expression, though “inaction” seemed a uniformly non-active state. 4. Residents had high SI when watching “ conversation” “conversation and housework” or “caretaker's action”.
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