Muscimol-induced inactivation of the VPM.

Inactivating VPM decreased responses in infra- and supragranular layers of S1. (A) Raster plots and PSTHs are shown for a supragranular sample neuron before (orange) and after (brown) VPM inactivation. (B) Mean response magnitude change (%) evoked by VPM inactivation. In both layers, spikes of sensory responses were strongly abolished after VPM inactivation by muscimol.