Abstract
SUMMARYThe effect of ischemia on propagation velocity and on the velocity recovery function was studied.1. The extensor digitorum communis muscle was made ischemic by means of a blood‐pressure cuff with or without previous application of an Esmarch roller.2. During ischemia the velocity could decrease (5 out of 23 cases), increase (3 out o f 23 cases) or be unchanged (15 out of 23 cases) in relation t o the pre‐ischemic slopc of the velocity curve.3. The velocity recovery function was unchanged in 4 out of 20 cases. It lost the supernormal phase in 10 out of 20 cases and in 6 out of 20 cases the supernormal phase changed to a subnormal.3. The influence of the innervation frequency upon the propagation velocity became continotisly more pronounced during the period of ischemia.
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