Faculty Articles
Title
The effect of eccentricity on the contrast response function of multifocal visual evoked potentials (mfVEPs)
ISBN or ISSN
0042-6989
Volume
49
Issue
14
Publication Date / Copyright Date
7-1-2009
First Page
1711
Last Page
1716
DOI Number
10.1016/j.visres.2009.03.021
Abstract
MfVEPs were recorded with a 22 deg radius, 60-sector pattern reversal dartboard stimulus (VERIS) at 6 contrast levels (10, 25, 35, 50, 75, 95%). Contrast response functions (CRFs) based on response amplitudes were adequately described by a simple hyperbolic function. The effect of reducing contrast on the amplitude was most apparent in the central 1 deg radius, which had a C50 (contrast at 50% of the maximum response) in excess of 50%, compared to values for C50 in more eccentric regions that were 30% or lower. Mean latency increased 6 (± 0.7 SE) ms from the highest to the lowest contrast tested, and did not vary sgnificantly with eccentricity.
Disciplines
Optometry
Keywords
multifocal visual evoked potential, mfVEP, contrast, retinal eccentricity, contrast response function.
NSUWorks Citation
Laron, Michal; Cheng, Han; Zhang, Bin; and Frishman, Laura J., "The effect of eccentricity on the contrast response function of multifocal visual evoked potentials (mfVEPs)" (2009). Faculty Articles. 16.
https://nsuworks.nova.edu/hpd_opt_facarticles/16
