誘発筋電図法による脊髄反射活動の臨床的研究

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111 cases including normal individuals and patients with nervous diseases were clinically tested on H wave caused by afferent Group 1-a fiber stimulation. "Electrostimuloanalyser" was used because it can stimulate the nerve without the influence of skin capacitance. Tibial nerve was stimulated at popliteal space and electromyogram was led from m. gastrocnemius with surface electrode. To get the spinal reflex transmission recovery curve and to detect the excitability of monosynaptic reflex arc, the double shocks, conditioning and testing shocks, were applied. The various intensity of double shocks were tested to examine the influence on recovery curve. Thus the standard intensity of stimulation was determined. The intensity of conditioning shock is selected so great that height of H wave is sufficient and M wave is still subliminal. The intensity of testing shock is equal to that of conditioning shock. The spinal reflex transmission recovery curves of several nervous diseases were drawn and the character of these curves was discussed. In cases of patients with spastic paralysis, the recovery curve indicates shortening of the so-called refractory period and supernormal eminence. It shifts to the left and upwards. In cases of flaccid paralysis, when H wave can be detectable, the recovery process is differed and the curve shifts to the right and downwards. Observation of the relationship between H, M waves and intensity of stimulation was useful when H wave was too small to draw the curve.
千葉大学の論文

誘発筋電図法による脊髄反射活動の臨床的研究

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