Steady-state pattern-reversal electroretinograms and visual evoked potentials were simultaneously recorded in two groups of young and elderly normal volunteers. The young group consisted of 23 subjects (13 women and 10 men) aged 18 to 28 years, and the elderly group consisted of 24 subjects (11 wome
Pupil size and the steady-state pattern reversal visual evoked cortical potential
✍ Scribed by Winfried Müller; Andrea Kollert; Carolin Zachert
- Publisher
- Springer-Verlag
- Year
- 1988
- Tongue
- English
- Weight
- 173 KB
- Volume
- 68
- Category
- Article
- ISSN
- 0012-4486
No coin nor oath required. For personal study only.
✦ Synopsis
30 eye-healthy subjects were being examined, with their pupils reacting, mydriatic or miotic. Their pattern reversal visual evoked cortical potentials (PRVECP's) were recorded under steady-state conditions. Test conditions allowed establishing a statistically significant influence of pupil size on the PRVECP.
📜 SIMILAR VOLUMES
The role of the central and peripheral stimulus fields on monocular and binocular amplitude and binocular summation of the pattern reversal visual evoked response were investigated. When the central stimulus field size was smaller than 2.4 degrees, there was no significant difference between the amp
At low contrast levels there is good agreement between the psychophysical contrast sensitivity function and the tuning curve of the visually evoked potential (i.e., VEP amplitude vs spatial frequency). At high contrast, however, some researchers have found bimodal VEP tuning curves whereas others ha