Abstract
Evidence of differences in the fibers of the inferior rectus muscle of the frog as regards the type of its electrical activity was obtained by a microelectrophysiological method. A constant tonic activity, consisting of polymorphic postsynaptic potentials, was observed in most fibers. Individual fibers responded by a series of action potentials to the depolarization produced by insertion of the microelectrode; this response is characteristic of transitional skeletal fibers. The remaining fibers were inactive and some of them, with a high membrane potential, can be classed among the phasic system.
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Sei, T.P. Electrophysiological characteristics of the external ocular muscles of the frog. Bull Exp Biol Med 79, 360–362 (1975). https://doi.org/10.1007/BF00832696
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DOI: https://doi.org/10.1007/BF00832696