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Deformations and thickness variations accompanying spreading depression in the retina

Deformations and thickness variations accompanying spreading depression in the retina Depression G. DE OLIVEIRA H. MARTINS-FERREIRA Instituto de Biofisica, Ihiversidade Federal do Rio de Janeiro, Rio de Janeiro, Brusil IN A PREVIOUS PAPER (4) it was shown that in the isolated retina, spreading depression (SD) is accompanied by visible optical changes. The ultimate mechanism underlying these changes is still unknown but some of its aspects can be elucidated. The visualization of the process is due to variations in the amount of light scattered by some of the tissue components. These alterations were shown to be dependent on the temperature chemical composition of the Ringer solutions. In addition, it was observed that the amount of scattered light both in the undisturbed retina as well as during SD is influenced by the osmolarity of the Ringer solution. The localization experiments demonstrated that changes in the inner plexiform layer contributed in a major way to the alterations in the light scattering. It was suggested (4) that the optical changes observed were correlated with morphological characteristics of the retina. Assuming that the change of the lightscattering properties of the retina resulted from dynamic alterations in some of its components, one could postulate that mechanical displacements of the retina as a whole would http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Neurophysiology The American Physiological Society

Deformations and thickness variations accompanying spreading depression in the retina

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Publisher
The American Physiological Society
Copyright
Copyright © 1970 the American Physiological Society
ISSN
0022-3077
eISSN
1522-1598
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Abstract

Depression G. DE OLIVEIRA H. MARTINS-FERREIRA Instituto de Biofisica, Ihiversidade Federal do Rio de Janeiro, Rio de Janeiro, Brusil IN A PREVIOUS PAPER (4) it was shown that in the isolated retina, spreading depression (SD) is accompanied by visible optical changes. The ultimate mechanism underlying these changes is still unknown but some of its aspects can be elucidated. The visualization of the process is due to variations in the amount of light scattered by some of the tissue components. These alterations were shown to be dependent on the temperature chemical composition of the Ringer solutions. In addition, it was observed that the amount of scattered light both in the undisturbed retina as well as during SD is influenced by the osmolarity of the Ringer solution. The localization experiments demonstrated that changes in the inner plexiform layer contributed in a major way to the alterations in the light scattering. It was suggested (4) that the optical changes observed were correlated with morphological characteristics of the retina. Assuming that the change of the lightscattering properties of the retina resulted from dynamic alterations in some of its components, one could postulate that mechanical displacements of the retina as a whole would

Journal

Journal of Neurophysiology – The American Physiological Society

Published: Nov 1, 1970

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