Rhesus Dynamic Visual Acuity.
Abstract
Rhesus dynamic visual acuity at target angular velocities from 0 degs/sec to173 degs/sec. Test stimuli consisted of negative contrast achromatic and chromatic Landolt Rings. Results indicate significant training effects. Improvement in acuity primarily occurred at velocities beyond the range of normal smooth pursuit eye movements (> 80-100 degs/sec). As with previous human studies, individual differences in rhesus dynamic visual acuity were observed. Chromatic dynamic visual acuity revealed wavelength specific functions that indicate an interaction between stimulus chromaticity and target angular velocity, not able to be observed with achromatic test stimuli. It is suggested that the use of chromatic stimuli reveals the presence of velocity sensitive mechanisms exhibiting differential chromatic sensitivity.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1986
- Accession Number
- ADA175290
Entities
People
- Harry Zwick
- Kenneth R. Bloom
Organizations
- Letterman Army Hospital