Orientation of Listing’s plane during static tilt in young and older human subjects
| Autor: | Joseph M. Furman, R. H. Schor |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Adult
Male Aging genetic structures Eye Movements Rotation Posture Poison control Otolith Otolithic Membrane Age groups Orientation Humans Ocular counterrolling Aged Vestibular system Significant difference Eye movement Reflex Vestibulo-Ocular Listing’s law Adaptation Physiological Sensory Systems Vestibular Ophthalmology Head Movements Head movements Optometry Female sense organs Listing's law Psychology Psychomotor Performance Human Gravitation |
| Zdroj: | Vision Research. 43(1):67-76 |
| ISSN: | 0042-6989 |
| DOI: | 10.1016/s0042-6989(02)00385-1 |
| Popis: | Three-dimensional eye positions, when expressed as rotation vectors, are constrained to lie in a head-fixed Listing’s plane. The offset and orientation of Listing’s plane changes when the head is tilted. To assess the influence of age on this phenomenon, young (less than 30 years old) and older (>65 years old) human subjects were seated upright, pitched nose up and nose down, and rolled right ear down and left ear down. Listing’s plane was computed from eye movements recorded using a dual scleral search coil while subjects scanned a complex visual scene. During pitch, Listing’s plane counterpitched with respect to the head, while during roll, it translated in a manner consistent with “ocular counterrolling”. There was no significant difference in this reorientation of Listing’s plane between the young and older subjects. The only obvious difference between the two age groups was that the “thickness” of Listing’s plane was greater in the older subjects. This suggests that aging has a small, but definite, influence on Listing’s law. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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