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Long-term behavior and intra-individual stability of the direct current electroretinogram and of the standing potential in the albino rabbit eye
Linköping University, Faculty of Health Sciences. Linköping University, Department of Clinical and Experimental Medicine, Ophthalmology . Östergötlands Läns Landsting, Reconstruction Centre, Department of Ophthalmology UHL/MH.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Clinical and Experimental Medicine, Ophthalmology . Östergötlands Läns Landsting, Reconstruction Centre, Department of Ophthalmology UHL/MH.
2003 (English)In: Documenta Ophthalmologica, ISSN 0012-4486, E-ISSN 1573-2622, Vol. 106, no 2, 195-200 p.Article in journal (Refereed) Published
Abstract [en]

The direct current electroretinogram (ERG) and the standing potential (SP) were studied in seven albino rabbits under general anesthesia. Identical experiments were performed on 2 consecutive days. After 30 min of dark adaptation. repeated light stimuli of maximal intensity of the system were presented to the eyes. The interstimulus interval was 70 s. and stimulus duration 10 s. Each experiment lasted for almost 3 h. In the first experiment, the b- and c-wave amplitudes measured in response to the second light stimulus were markedly reduced compared to those recorded in response to the first stimulus. Both amplitudes then recovered. The b-wave attained a peak about 20 min after the start of light stimulation. The peak was followed by a trough about 20 min later, and the amplitude then slowly increased. Following the minimum recorded during the second light stimulus, the c-wave amplitude reached a peak about 14 min after the start of stimulation. A trough in the amplitude occurred 20 min later. The amplitude then slowly increased to the end value, which was higher than the initial level. The a-wave behaved similarly to the b-wave, but the changes in most cases did not attain statistical significance. A minimum in the SP occurring at the second light stimulus was followed by a peak about 13 min after the start of light stimulation, and then by a trough about 17 min later. In the second experiment, performed one day after the first, the development of the a-. b-, and c-wave amplitudes and of the SP was similar to that observed during the first experiment, and no statistically significant differences between the two experiments were found. The reactions of the ERG and the SP were thus very stable between identical experiments performed on two consecutive days.

Place, publisher, year, edition, pages
2003. Vol. 106, no 2, 195-200 p.
Keyword [en]
electroretinogram, a-wave, b-wave, c-wave, SP, standing potential, retinal pigment epithelium
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-48618OAI: oai:DiVA.org:liu-48618DiVA: diva2:269514
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-12

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Gottvall, EvaTextorius, Ola

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