Abstract
We examined the possibility that the 100- to 1000-Hz oscillatory potentials could represent the derivative version of the 1- 1000-Hz electroretinogram. Corneal electroretinograms were recorded from rabbits by means of bandwidths of 1–1000 Hz, 10–1000 Hz, 30–1000 Hz and 100–1000 Hz (6 dB of attenuation). Derivatives of the 1- to 1000-Hz electroretinogram had a waveform similar to the 100- to 1000-Hz signals, but of larger amplitude (21.9% ± 16.7% larger, n = 16). Similarly, integration of the 100- to 1000-Hz signal resulted in a wave-form whose amplitude was 60% of the original 1- to 1000-Hz electroretinogram. Our results suggest that some aspect of the morphologic changes seen when the low-frequency cutoff of the recording bandwidth of the ERG is increased from 1 Hz to 100 Hz could be explained with a simple derivative model. The oscillatory potentials may be significant contributors to the morphogenesis of the 1- to 1000-Hz electroretinogram.
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Lachapelle, P., Benoit, J. Interpretation of the filtered 100- to 1000-Hz electroretinogram. Doc Ophthalmol 86, 33–46 (1994). https://doi.org/10.1007/BF01224626
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DOI: https://doi.org/10.1007/BF01224626