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Effects of optical pitch on oculomotor control and the perception of target elevation
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Cohen, Malcom M. Ebenholtz, Sheldon M. Linder, Barry J. |
| Copyright Year | 1995 |
| Description | In two experiments, we used an ISCAN infrared video system to examine the influence of a pitched visual array on gaze elevation and on judgments of visually perceived eye level. In Experiment 1, subjects attempted to direct their gaze to a relaxed or to a horizontal orientation while they were seated in a room whose walls were pitched at various angles with respect to gravity. Gaze elevation was biased in the direction in which the room was pitched. In Experiment 2, subjects looked into a small box that was pitched at various angles while they attempted simply to direct their gaze alone, or to direct their gaze and place a visual target at their apparent horizon. Both gaze elevation and target settings varied systematically with the pitch orientation of the box. Our results suggest that under these conditions, an optostatic response, of which the subject is unaware, is responsible for the changes in both gaze elevation and judgments of target elevation. |
| File Size | 663591 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19970009860 |
| Archival Resource Key | ark:/13960/t9t19xt3v |
| Language | English |
| Publisher Date | 1995-01-01 |
| Access Restriction | Open |
| Subject Keyword | Behavioral Sciences Elevation Visual Tasks Judgments Optical Illusion Visual Stimuli Eye Movements Visual Fields Pitch Inclination Visual Perception Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
