title: Hippocampal theta rhythm: intra-hippocampal formation contributions.
mesh_terms: D000818:Animals; D004567:Electrodes, Implanted; D004569:Electroencephalography; D006624:Hippocampus / Q000033:anatomy & histology / Q000502:physiology*; D008297:Male; D051381:Rats; D013238:Stereotaxic Techniques