The influence of adaptation on the oscillatory potentials of the human electroretinogram |
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Authors: | Xiao-Xin Li Nin Yuan Jie Hong Pei Song |
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Institution: | (1) Department of Opthalmology, People's Hospital, Beijing Medical University, 100034 Beijing, People's Republic of China |
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Abstract: | 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 intensities of background illumination, they increased slightly and appeared to decrease with the strongest background illumination. The implicit time of oscillatory potentials 3 and 4 increased with stronger background illumination and decreased with the strongest background illumination. The results of the dominant frequency and the total power of the OPs correspond to the results in the time domain. The dominant power decreased from dark adaptation into light adaptation and did not show any systematic changes with increasing intensity of background illumination.Abbreviations BG
background illumination
- OP
oscillatory potential |
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Keywords: | Background illumination dark adaptation frequency domain oscillatory potentials time domain |
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