University of Rochester
The purpose this study is to measure sensitivity to visual and vestibular or balance motion. It is hoped that the results may help researchers better understand how aging and disease affect motion perception.
As people move through natural environments, they experience both visual and inertial stimuli. These can be integrated into a unified perception of self-motion (i.e. common causation) or segregated so that inertial or vestibular stimuli represents self-motion and visual represents external motion. There has been very little work on how causal inference (CI) or determination of common causation occurs for visual and inertial stimuli. Yet this is an important factor in fall risk, motion sickness, simulator sickness, concussion, dementia, and migraine. This proposal aims to develop and establish…
Inclusion Criteria: Healthy subjects: * general good health Vestibular Disease patients: * general good health * specific unilateral or bilateral vestibular loss Exclusion Criteria: Healthy subjects: * subjects who are institutionalized or otherwise not self-sufficient. * enduring sequelae due to diseases of the nervous system, eyes, ears, head and neck, and limbs, except for changes commensurate with normal aging (e.g. presbyacusic hearing loss, mild cataract, etc.). * abnormal cognitive function, which if in question can be determined as a score of \<27 on the Mini-Mental State test.…
Will adapt subject's perceived heading direction using exposure to visual environments that include rotation and situations where visual and inertial heading direction are systematically offset.
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