File:A manual of practical medical electricity - the Röntgen rays and Finsen light (1902) (14783352722).jpg

Identifier: manualofpractica00turn (find matches)
Title: A manual of practical medical electricity : the Röntgen rays and Finsen light
Year: 1902 (1900s)
Authors: Turner, Dawson
Subjects: X-Rays Electrophysiology Electrosurgery Electric Stimulation Therapy Electrotherapeutics X-rays Electrophysiology Electrosurgery
Publisher: New York : William Wood & Company
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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Fig. 109.—Motor Points of Inner Surface of Leg (Ziemssen). nerves and muscles are stimulated by currents of a strengthinsufficient (with the coils too far apart) to stimulatenormal tissues, or that the muscles react more activelyand energetically to currents of the same strength ; thiscondition usually also implies rapid exhaustion. It ismet with chiefly in conditions of irritation, where thereflex excitability is also heightened, as in chorea, tetany,. 14—2 212 A Manual of Practical Medical Electricity spastic paralysis, early stage of locomotor ataxy, andhysterical paralysis. Galvanic Superexcitability. If a muscle reacted to an interruption when the current-strength was I m.a. or less, and particularly if this con-traction were prolonged, and showed a tendency to be Eectus Abdominis iCntercostal Nerves) i
Text Appearing After Image:
Serratus MagnusLatissimus Dorsi Obliquus Lxternus(Intercostal Nerves) Transversalis Fig. no.—Motor Points of Anterior Surface of Trunk(Ziemssen). tetanic, it might cceteris paribus be considered to be super-excitable. The condition is found in the same class ofcases as the above, but with some important additions asregards the muscles, viz., in the early stages of peripheralneurites of all kinds, rheumatic (facial), traumatic, alco-holic, etc., also of infantile paralysis—in fact, it may befound in the early stages of all conditions involving a lesionof the second trophic realm (vide reaction of degeneration). Electro-Diagnosis 213 (b) Faradic Subexcitability. The muscles and nerves do not react to currents whichwould be of sufficient strength to stimulate normaltissues. This condition is met with in the peripheral neurites,and other cases above mentioned ; also in pseudo-hyper-trophic paralysis, myopathic muscular atrophies, long-standing cases of locomotor ataxy, and whenever th

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