power at any of the two frequencies across all stimulation instances for a given electrode in a given experiment was calculated and power values were then corrected by subtracting the minimum and dividing by the range to obtain values between 0 and 1. Linear regression analysis was applied to peak frequencies (theta and 2–5 Hz) versus stimulus intensity. Linear regression analysis was also applied to peak power in the PFC, HC, and nRE vs. stimulus intensity for the theta and 2–5 Hz signals. Pearson’s correlation was calculated between the peak power values of the HC and PFC for both the theta and 2–5 Hz oscillations. Partial correlations were also calculated between peak power of the HC and PFC with controlling for the nRE signal, using the following formula: r(PFC−HCnRe)=r(PFC−HC)−r(PFC−nRe)*r(HC−nRe)(1−r(PFC−nRe)2)*(1−r(HC−nRe)2)
