Suppression of Reflex Postural Tonus: A Role of Peripheral Inhibition in Insects

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Science  14 May 1982:
Vol. 216, Issue 4547, pp. 751-753
DOI: 10.1126/science.216.4547.751


Postural reflexes act through a single excitatory motoneuron of the several that innervate a flexor muscle of the cockroach leg. A peripheral inhibitory neuron whose axon accompanies this excitatory motoneuron is able to suppress muscle tensions developed from postural reflexes without affecting centrally generated muscle tensions. The inhibitory neuron could thus serve to rapidly suppress postural tensions at the initiation of escape.