Birefringence experiments on isolated skeletal muscle fibres suggest a possible signal from the sarcoplasmic reticulum

When stimulated by external electrodes, a frog muscle fibre bathed in hypertonic Ringer gives a birefringence signal consisting of three components. The small first component is due to the action potential of the surface membrane, and the much larger second component may be related to voltage change...

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Bibliographic Details
Published in:Nature (London) 1975-01, Vol.253 (5487), p.97-101
Main Authors: Baylor, S. M, Oetliker, H
Format: Article
Language:English
Subjects:
Action Potentials
Animals
Birefringence
Calcium - metabolism
Humanities and Social Sciences
In Vitro Techniques
Membrane Potentials
multidisciplinary
Muscle Contraction
Muscles - metabolism
Muscles - physiology
Rana temporaria
Sarcoplasmic Reticulum - physiology
Science
Science (multidisciplinary)
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Summary:When stimulated by external electrodes, a frog muscle fibre bathed in hypertonic Ringer gives a birefringence signal consisting of three components. The small first component is due to the action potential of the surface membrane, and the much larger second component may be related to voltage change across the sarcoplasmic reticulum associated with the release of Ca 2+ . The third component is of uncertain origin.
ISSN:0028-0836
1476-4687
DOI:10.1038/253097a0