ADAPTIVE PROPERTIES OF THE b-WAVE AND THE PIII IN THE PERFUSED ISOLATED CARP RETINA
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- ASANO Toshiki
- Department of Aerospace Physiology, The Research Institute of Environmental Medicine, Nagoya University
Bibliographic Information
- Other Title
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- Adaptive Properties of the b Wave and t
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Abstract
1. Perfusion of isolated carp retina with a pure oxygen saturated standard solution used in this experiment permitted several continuous hours of ERG recordings showing a distinctive b-wave as well as the PIII isolated by sodium aspartate.<BR>2.The dark-adapted threshold for the PIII required an absorption of 5 to 6 quanta per rod.The‘rod-cone break’in the increment threshold curve for the b-wave was induced at a background intensity of about 2.0×10-2, μW/cm2.<BR>3.Both the b-wave and the PIII showed rapid and complete recovery of sensitivity after exposure to dim adapting lights.After bright light adaptation, the sensitivities went through a short‘fast phase’followed by a prolonged‘slow phase’of recovery.The rate of recovery during the fast phase was significantly faster for the PIII than for the b-wave. Neither a lowered temperature (9°C) nor the application of ouabain (10-6 M) influenced the fast phase.This seems to prove that the visual pigment, photoproducts and the active transport hardly participate in its mechanism, if at all.<BR>4.The prolonged slow phase that followed the fast phase was distinguished by the recovery of the rod activity, even in isolated retinas.
Journal
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- The Japanese Journal of Physiology
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The Japanese Journal of Physiology 27 (6), 701-716, 1977
THE PHYSIOLOGICAL SOCIETY OF JAPAN
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Details 詳細情報について
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- CRID
- 1390282680018656256
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- NII Article ID
- 130003476657
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- NII Book ID
- AA00691224
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- COI
- 1:STN:280:DyaE1c7nsFShsA%3D%3D
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- ISSN
- 18811396
- 0021521X
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- NDL BIB ID
- 1910370
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- PubMed
- 613094
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed