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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
Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för klinisk och experimentell medicin, Oftalmologi. Östergötlands Läns Landsting, Rekonstruktionscentrum, Ögonkliniken US/LiM.
Linköpings universitet, Hälsouniversitetet. Linköpings universitet, Institutionen för klinisk och experimentell medicin, Oftalmologi. Östergötlands Läns Landsting, Rekonstruktionscentrum, Ögonkliniken US/LiM.
2003 (Engelska)Ingår i: Documenta Ophthalmologica, ISSN 0012-4486, E-ISSN 1573-2622, Vol. 106, nr 2, s. 195-200Artikel i tidskrift (Refereegranskat) 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.

Ort, förlag, år, upplaga, sidor
2003. Vol. 106, nr 2, s. 195-200
Nyckelord [en]
electroretinogram, a-wave, b-wave, c-wave, SP, standing potential, retinal pigment epithelium
Nationell ämneskategori
Medicin och hälsovetenskap
Identifikatorer
URN: urn:nbn:se:liu:diva-48618OAI: oai:DiVA.org:liu-48618DiVA, id: diva2:269514
Tillgänglig från: 2009-10-11 Skapad: 2009-10-11 Senast uppdaterad: 2017-12-12

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Gottvall, EvaTextorius, Ola

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