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. 2012 Jan 6;7(1):e29754. doi: 10.1371/journal.pone.0029754

Figure 4. Reduction of CA1 theta power in the hippocampus after prenatal immune challenge.

Figure 4

A) Photo of the intact hippocampal preparation with CA1 and CA3 outlined. B) Representative recording of spontaneous oscillatory activity in the whole hippocampal preparation in vitro. C) Average power spectrum (± SEM). Notice in both cases the peak power at around 4 Hz, corresponding to theta rhythm. D) The average power and peak frequency of the spontaneous self-generated theta oscillation recorded in the whole hippocampal preparation from poly I∶C- and saline-treated animals. For this experiment n = 6 in the saline and n = 7 in the poly I∶C-treated group.