| Abstract: | Extra- and intracellular responses of 128 neurons to paired stimulation of the infraorbital nerve and vibrissae, recorded in the projection zone of the vibrissae in cortical area SI, were studied in adult cats immobilized with tubocurarine. Conditioning stimulation completely suppressed the ability of different neurons to respond for periods of between 10 and 120 msec. The duration of the period of total suppression of test responses was shown to depend on the location of the stimulated vibrissa in the peripheral receptive field of the neurons studied. Excitatory and inhibitory responses of maximal intensity arose in the neurons to stimulation of receptive field centers. The functional role of the decrease in intensity of excitatory responses during stimulation of vibrissae located at different distances from centers of the receptive fields of cortical neurons is discussed.A. A. Bogomolets Institute of Physiology, Academy of Sciences of the Ukrainian SSR, Kiev. Translated from Neirofiziologiya, Vol. 13, No. 2, pp. 117–124, April, 1981. |
