Human Fast Retinal Potentials Studied with Pattern Reversal Stimuli

  • Matthias J. Korth
  • Viktor Reimann
Part of the Documenta Ophthalmologica Proceeding Series book series (DOPS, volume 23)


High-frequency wavelets of the human ERG obtained with alternating stimulus patterns were observed predominantly on the ascending slope of the b-wave. With increasing stimulus intensity, the peak latency of the b-wave decreased at a higher rate than that of the fast components and the number of the wavelets decreased. The spectral sensitivity of the wavelets obtained with a checkerboard pattern was purely photopic at all adaptation levels. When the spatial frequency of alternating square wave stripe and checkerboard patterns was varied between 0.3 and 8 c/deg, typical changes in the behaviour of the fast components could be observed. Around a spatial frequency of 3 c/deg, two wavelets showed increased amplitude values. Above 1 c/deg, up to five wavelets and below 1 c/deg, only three wavelets were observed. Most of the fast components evoked with a checkerboard pattern were of smaller amplitude and, when plotted as a function of the spatial frequency of the fundamental Fourier component of the checkerboard pattern, showed a behaviour similar to that of the wavelets obtained with the stripe pattern.


Spatial Frequency Spectral Sensitivity Peak Latency Oscillatory Potential Luminosity Function 
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Copyright information

© Dr W. Junk by Publishers 1980

Authors and Affiliations

  • Matthias J. Korth
    • 1
  • Viktor Reimann
    • 2
  1. 1.Institut für Physiologie und BiokybernetikUniversität Erlangen-NürnbergGermany
  2. 2.ErlangenGermany

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