Figure 1.

Postinhibitory rebound spike-bursts elicited by VL stimulation in the TC neuron from the VL nucleus precede rebound activities in cortical area 4. Dual intracellular recordings from the same VL neuron and two area-4 neurons (A and B) are shown, together with field potentials from the depth of area 4. Recordings shown were made from cat under barbiturate anesthesia. (Top) Responses to single VL stimuli. (Middle) Corresponding spike-triggered averages (STA; n = 5) by first action potential in rebound spike-bursts of VL neuron. (Bottom) Wave-triggered averages (WTA; n = 5; same sweeps as for STA) by sharp depth-negative wave in area 4. The dotted line indicates reference time for both STA and WTA. Note that rebound spike-bursts in the VL cell preceded the cortical spindle sequence after stimulus-induced inhibition.