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  • Title: Inhibitory projection from brachioradialis to biceps brachii motoneurones in human.
    Author: Naito A, Shindo M, Miyasaka T, Sun YJ, Morita H.
    Journal: Exp Brain Res; 1996 Oct; 111(3):483-6. PubMed ID: 8911944.
    Abstract:
    Neural projection from the brachioradialis to the biceps brachii motoneurones in human was studied using the method of post-stimulus time histogram. Electrical stimulation to the radial branch innervating the brachioradialis produced inhibition in 11 out of 21 biceps motor units. The central delays of the inhibition were 0.7-1.2 ms longer than those of the homonymous facilitation. The inhibition was evoked with the intensity below the motor threshold. Pure cutaneous stimulation provoked no effects on the motor-unit firing. These findings suggest that group I afferents from the brachioradials mediate an oligosynaptic inhibition of the biceps brachii motoneurones.
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