| Abstract: | The effects of adequate vestibular stimulation, achieved by turning the animal around its longitudinal axis, on intensity of rhythmic activity in forelimb muscle nerves were investigated during experiments on immobilized decerebrate guinea pigs. This activity was produced by electrical stimulation of the mesencephalic locomotor region, following the action of DOPA administered i.v. Rhythmic activity arises mainly in the flexor muscle nerve under these circumstances. The intensity of such activity alters as the body was tilted, diminishing and increasing as the body is tilted to the ipsi- and contralateral side, respectively. Alterations in activity are characterized by an acceleration-related phase lag of –110 to –150° during cyclic tilting at the rate of 0.02–0.4 Hz.A. A. Bogomolets Institute of Physiology, Academy of Sciences of the Ukrainian SSR, Kiev. Translated from Neirofiziologiya, Vol. 22, No. 2, pp. 223–227, March–April, 1990. |
