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. 2018 Aug 3;94(7):275–304. doi: 10.2183/pjab.94.019

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© 2018 The Japan Academy

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 22. — Reciprocal Ia inhibition in spastic hemiplegia. In both A and B, the ordinate shows the amplitude of the test H reflex expressed as a percentage of the control amplitude (at C with standard deviation). The abscissa shows the time interval between the first conditioning and the test stimuli. Conditioning stimuli are indicated by arrows. A: from extensor (tibial) nerve to flexor (pretibial muscle) H reflex. Single conditioning stimulus with a strength of 0.75 XMT produced marked inhibition with short latency, which is attributable to Ia inhibition. B: from flexor (peroneal) nerve to extensor (triceps surae) H reflex. The inhibitory effect was very weak compared with A. Three peroneal stimuli at 1.56 XMT, 300 Hz produced slight inhibition from 8.0 msec (arrow). (From Yanagisawa, Tanaka and Ito, 1976⁷⁰⁾).