The effect of stimulus contrast on the latency and amplitude of the pattern electroretinogram.
Our studies have verified that a linear relationship exists between the amplitude of the pattern onset ERG and retinal contrast, but indicate that there is no systematic variation in peak latency with contrast. The optical degradation of high spatial frequency patterns cannot therefore provide an explanation for the variation in peak latency with spatial frequency.
Thompson
D
D
Department of Vision Sciences, Aston University, Birmingham, U.K.
Drasdo
N
N
D015350:Contrast Sensitivity / Q000502:physiology; D004596:Electroretinography; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D008433:Mathematics; D010364:Pattern Recognition, Visual / Q000502:physiology*; D013997:Time Factors