Fig. 3.

Example electrophysiological recordings. (a) Example raw LFP, HF, and CAR-HF traces from three representative channels (ch5, 11, and 16). Channel number portrays sequential electrode site order. Channel 1 represents the electrode site nearest the pial surface, whereas channel 16 is the deepest electrode site. Shaded areas show recording segments contaminated by myoelectric and movement artifacts, which were removed from further LFP and MUA quantitative analysis. (b) Example spikes detected in 100 ms recordings shown in (a). No spikes were detected in ch5 in the segment. Two types of waveforms of spikes were detected in ch11, presumably from two different neurons.