Interpretation of the filtered 100- to 1000-Hz electroretinogram

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 attenuatio...

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Bibliographic Details
Published in:Documenta ophthalmologica 1994-03, Vol.86 (1), p.33-46
Main Authors: LACHAPELLE, P, BENOIT, J
Format: Article
Language:English
Subjects:
Animals
Biological and medical sciences
Cornea - physiology
Data Interpretation, Statistical
Electrodiagnosis. Electric activity recording
Electrooculography. Electroretinography
Electroretinography - methods
Investigative techniques, diagnostic techniques (general aspects)
Medical sciences
Photic Stimulation
Rabbits
Retina - physiology
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Summary: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 waveform 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.
ISSN:0012-4486
1573-2622
DOI:10.1007/BF01224626