Fig. 4.

Neurons located in the central core subdivision (cc, filled area, inset inA) innervated by the striatal sector related to the orofacial sensorimotor cortical areas. A,B, Three-dimensional reconstruction of SNR illustrating the position of the labeled neurons with respect to the striatal projection field. In this and the following figures of the same type, the boundary of the SNR is represented in light gray, the striatal projection field is represented in dark gray, and the labeled neurons are represented as open circles. The SNR is shown from a rostral view inA and a ventral view in B.C–E, Three-dimensional reconstruction of neuron13g. The neuron is examined from a rostral view inC, a ventral view in D, and a medial view in E. Note that because of the lights placed around and within the SNR, a shadow of the dendritic arborization appears at the surface of the SNR. The reference number of the injected neuron is indicated on the top right corner of each panel. Scale bars, 350 μm. F, Peristimulus time histogram illustrating the electrophysiological response of neuron 13g to stimulation of the orofacial motor cortex (arrow: stimulation artifact). Note the clear-cut inhibitory period induced by the cortical stimulation.