Selective Modulation of Hippocampal Theta Oscillations in Response to Morphine versus Natural Reward.

ABSTRACT: Despite the overlapping neural circuits underlying natural and drug rewards, several studies have suggested different behavioral and neurochemical mechanisms in response to drug vs. natural rewards. The strong link between hippocampal theta oscillations (4-12 Hz) and reward-associated learning and memory has raised the hypothesis that this rhythm in hippocampal CA1 might be differently modulated by drug- and natural-conditioned place preference (CPP). Time-frequency analysis of recorded local field potentials (LFPs) from the CA1 of freely moving male rats previously exposed to a natural (in this case, food), drug (in this case, morphine), or saline (control) reward cue in the CPP paradigm showed that the hippocampal CA1 theta activity represents a different pattern for entrance to the rewa

SUBMITTER: Jamali S 

PROVIDER: S-EPMC9953863 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature