D4 receptor activation increases coherence of pyramidal cell IPSCs.

<p>Intracellular recordings of IPSCs in pyramidal cells (clamped to 0 mV) with ongoing gamma oscillations. <b>A.</b> Example traces of IPSC recordings. <b>B.</b> Summary bar-diagram showing the amplitude of IPSCs (mean ± SEM). <b>C.</b> Power spectrum of IPSCs constructed from the traces shown in A. (kainate recording in black, subsequent recording with PD168077 in grey). <b>D.</b> Summary bar-diagram of LFP gamma power normalized to kainate. <b>E.</b> Coherence spectrum of IPSCs versus LFP recordings from recordings shown in A (kainate recording in black, subsequent recording with PD168077 in grey). <b>F.</b> Summary bar-diagram of peak coherence values across experiments (mean ± SEM).