The influence of adaptation on the oscillatory potentials of the human electroretinogram was studied in the domains of frequency and time. The amplitude of OP1 to OP4, the summed amplitude of OP1 to OP4, as well as the area, decreased from dark adaptation to light adaptation. With increasing intensi
Effect of adaptation and wavelength on the power spectrum of human oscillatory potentials
β Scribed by Girish Vallabhan; Sonja Kristiansen; James Price; Rockefeller S. L. Young
- Publisher
- Springer-Verlag
- Year
- 1988
- Tongue
- English
- Weight
- 295 KB
- Volume
- 69
- Category
- Article
- ISSN
- 0012-4486
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β¦ Synopsis
Oscillatory potentials were recorded from four adult subjects under dark-and light-adapted conditions with photopically balanced red and blue flashes. The responses between 80 and 200 Hz were analyzed by means of a Fast Fourier transform program. The results show a robust change in the power --but not in the frequency composition --with the different stimulus conditions. We suggest that an analysis of the total power within this frequency band may provide a quantitative way of evaluating the duplex nature of the oscillatory potentials.
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