(A) Results for a representative PC recorded in LS. The blue line shows the depth of PC spike modulation, as measured by the resultant vector magnitude. Significance cutoffs represent the 95th percentile and 99th percentile boundaries, respectively, of the surrogate result distributions for each frequency obtained by shifting the PC spike recording in time relative to LFPs 200 times. Asterisks indicate frequencies with significant modulation (p < 0.01).
(B) Pseudocolor plot shows LS PC spike density as a function of phase difference (φ) between mPFC and CA1 LFP oscillations across frequencies between 0.5 and 100 Hz. Analysis was performed within frequency bands with a 0.5–10 Hz width, in steps of 0.25 Hz.
(C and D) Results for a representative PC recorded in Crus I. Plots are as in (A) and (B) but for a PC recorded in Crus I.