This is an experimental study with eye-camera to investigate visual search in 28 elderly persons with dementia (17 Alzheimer's type of dementia, 11 cerebrovascular type of dementia), 7 normal elderly persons, and 11 young normal persons, while their walking on setting routes for wayfinding cues as continuous abstract signs. The results are summarized as follows. We find eye fixations on continuous stimuli in dementia group increase more those on non-continuous visual stimuli, and that eye fixations in cerebrovascular's type tend to be more biased than those in Alzheimer's type to the floor and lower portions. We infer that it raises visual perception level for dementia group to arrange continuous visual stimuli as a wayfinding cue on floor portions.
