[Morpho-physiologic characteristics of the fiber spectrum of a frog external eye muscle].

By means of histochemical and microelectrophysiological methods, fibers of the eye inferior rectus muscle of the frog were divided into types with phasic, tonic (two types), and transitional (two types) signs. Electric activity of the muscle in situ reveals presence of phasic, transitional, and tonic fibers in the given object (the tonic fibers being characterized by a wide range of the PSP parameters).