al. 2010). Anderson et al. (2010) recorded from the temporal cortex and PFC in epilepsy patients with implanted electrodes, and demonstrated increased theta coherence between HC and PFC during recall tasks that was predominately driven in the HC-to-PFC direction. In this study, we also found that theta oscillations were the dominant frequency in the HC during RPO stimulation, and that peak theta power in HC correlated to peak powers in the PFC, which agree with these earlier studies of HC-to-PFC theta synchronization.
