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Age-related changes in human vestibulo-ocular and optokinetic reflexes: pseudorandom rotation tests
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Peterka, R. J. Black, F. O. Schoenhoff, M. B. |
| Copyright Year | 1989 |
| Description | The dynamic response properties of horizontal vestibulo-ocular reflex (VOR) and optokinetic reflex (OKR) were characterized in 216 human subjects ranging in age from 7 to 81 years. The object of this cross-sectional study was to determine the effects of aging on VOR and OKR reflex dynamics, and to identify the distributions of parameters which describe VOR and OKR responses to pseudorandom stimuli in a putatively normal population. In general, VOR and OKR response parameters changed in a manner consistent with declining function with increasing age. For the VOR this was reflected in declining response amplitudes, although the magnitude of the decline was small relative to the variability of the data. For the OKR the lag time of the response, probably associated with the time required for visual information processing, increased linearly with age at a rate of about 1 ms per year. |
| File Size | 899225 |
| Page Count | 16 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19890018842 |
| Archival Resource Key | ark:/13960/t4nk8846p |
| Language | English |
| Publisher Date | 1989-01-01 |
| Access Restriction | Open |
| Subject Keyword | Man/system Technology And Life Support Pseudorandom Sequences Age Factor Vestibular Tests Visual Tasks Human Performance Human Reactions Visual Stimuli Eye Movements Visual Perception Reflexes Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
