. Diseases of the nervous system : for the general practitioner and student. tion is obtained only from CaCC; (2) with a mediumcurrent the reaction from CaCC is the strongest, although anodal contrac-tions are also obtained; (3) with a strong current the CaCC is tetanic,iVnOC and AnCC is strong, especially the first, and CaOC is weak. Ins 66 EXAMINATION FOR NERVOUS DISEASES direct muscular contractions only the closure contractions are CaCC comes before the AnCC. Pathological Reactions.—In diseased conditions of the musclesquantitative and qualitative changes of the electrical re
. Diseases of the nervous system : for the general practitioner and student. tion is obtained only from CaCC; (2) with a mediumcurrent the reaction from CaCC is the strongest, although anodal contrac-tions are also obtained; (3) with a strong current the CaCC is tetanic,iVnOC and AnCC is strong, especially the first, and CaOC is weak. Ins 66 EXAMINATION FOR NERVOUS DISEASES direct muscular contractions only the closure contractions are CaCC comes before the AnCC. Pathological Reactions.—In diseased conditions of the musclesquantitative and qualitative changes of the electrical reactions are impor-tant. As to the first they are of less value than the second. An increasedreaction has an importance only in one disease, viz. tetany. There theCaCC and AnOC appears even with very weak currents. A decreasedresponse occurs oftener than an increased, but without any special diag-nostic value. Ordinary diminution of electric irritability is observed in Tibialis anticus. —Extensor longus digitorum Peroneus brevis.— Extensor longus hallucis Peroneal. longus. Soleus. Flexor longus hallucis. Extensor brevis minimi digiti. Fig. 58.—Motor Points on Leg, External Surface. muscular atrophy without degeneration of nerves and muscles, in muscularwasting accompanying diseases of the joints or cerebral diseases. Com-plete loss of electrical contractility is observed, muscles are en-tirely destroyed. Of considerably greater importance are the qualitativechanges, viz. reactions of degeneration (RD). They may be completeor partial. Complete.—1. If a nerve is gravely injured, we have in the per-ipheral portion an increased reaction during the first two days which EXAMINATION FOR NERVOUS DISEASES 67 gradually decreases and in ten to fourteen days disappears totally. (Thereactions are identical with galvanic and faradic currents.) 2. In case of a muscle being gravely damaged the galvanic irritabilitydecreas
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectnervous, bookyear1913
