[Effect of rhythmic stimulation of the locus coeruleus on segmental reflex reactions evoked by stimulation of cutaneous and muscle afferents]

Abstract

Conditioning stimulation of the high-threshold cutaneous afferents exerted in decerebrated and anesthetized cats combined facilitatory and inhibitory actions on the extensor monosynaptic reflex, while stimulation of high-threshold muscle afferents exerted only an inhibitory one. Inhibition of the extensor monosynaptic reflex diminished substantially during rhythmic stimulation of locus coeruleus. Facilitation of the flexor monosynaptic reflex after volleys of high-threshold cutaneous and muscle afferents did not undergo any changes under such stimulation.