Fig. 5. ( A ) Recordings of the early local field potential (LFP) in wild type mouse preparations under control conditions and in the presence of 0.2 μm etomidate (n = 9). ( B ) Depression of the peak of the LFP at the beginning of an episode of ongoing activity. Height (not significant) and area under curve ( P < 0.05, n = 9/11) for wild type (white) and β3(N265M) mutant (black) preparations.