. Electro-physiology. Electrophysiology. 150 ELECTRO-PHYSIOLOGY CHAP. and since this refers to the rapidly-moving M. retractor of the neck, the other muscles of the same animal must yield a still lower value. Bernstein and Steiner (G) found, as we should expect, that the rate of conductivity in warm-blooded muscles (sterno-mastoid of dog) was considerably greater than in cold- blooded animals (3—6 m.), and certain experiments of Hermann (infra} estimate it for living human muscle at between 10 and 13 in. per sec. We are indebted to Ilollett (7) for experiments on the rapidity of transmission o
. Electro-physiology. Electrophysiology. 150 ELECTRO-PHYSIOLOGY CHAP. and since this refers to the rapidly-moving M. retractor of the neck, the other muscles of the same animal must yield a still lower value. Bernstein and Steiner (G) found, as we should expect, that the rate of conductivity in warm-blooded muscles (sterno-mastoid of dog) was considerably greater than in cold- blooded animals (3—6 m.), and certain experiments of Hermann (infra} estimate it for living human muscle at between 10 and 13 in. per sec. We are indebted to Ilollett (7) for experiments on the rapidity of transmission of contraction in the red and pale muscles of rabbit, which notably present wide differences in regard to the. FK;. 70.—Determination of velocity of muscular excitation by the pim-r m>imjrn[iliuiin-, (Murey.) time-relations of their twitches. After freeing the pale semi- membranosus and the red cruralis, he placed a strip 30—40 mm. long between the forceps of a Ma rev's jii >!<•<• /ii//<i//,'i//i/i,:(jt/r (Fig. 70). These were connected with a Marey's registering tympanum, by means of which the curves of expansion were recorded on a rotat- ing cylinder, which also showed a tuning-fork tracing of 100 vibrations per sec, A make induction shock served as stimulus. The animals experimented on were curarised. The curve of expansion, corresponding with the excitation point, is again steeper and less extended than the transmitted wave, so that in estimating the time differences between the curves the interval at which they commence is the only datum. The physiological deviations of the pale (quick) and red (sluggish). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Biedermann, W. (Wilhelm), 1852-1929; Welby, Frances A. (Frances Alice). London : Macmillan
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