Phencyclidine-induced psychosis causes hypersynchronization and disruption of connectivity within prefrontal-hippocampal circuits that is rescued by antipsychotic drugs
Cristina Delgado-Sallent, Pau Nebot, Thomas Gener et al. preprint
Psychosis induced by the NMDAR antagonist phencyclidine in mice causes hypersynchronization and disrupted communication between the prefrontal cortex and hippocampus, including increased oscillatory power at delta, high gamma, and high frequencies, aberrant cross-frequency coupling, enhanced cross-regional coupling and phase coherence, and a reversal of the direction of theta-frequency information flow from hippocampus-to-prefrontal-cortex to delta rhythms traveling in the opposite direction. Three antipsychotic drugs—haloperidol, clozapine, and risperidone—rescued most of these changes, suggesting common cellular mechanisms. Selective serotonin receptor agents rescued power, coupling, and phase coherence but not the directionality, indicating additional targets are needed.