title: Epileptiform burst responses in ventral vs dorsal hippocampal slices.
abstract: Field potentials from area CA1 evoked by stimulation of the Schaffer collaterals were compared in dorsal and ventral hippocampal slices of rat brain. Responses were categorized into 5 response types on the basis of their morphology, ranging from simple (single spike component) to complex (multiple spike components). A higher percentage of ventral slices, compared to dorsal slices, responded with a complex morphology under normal and increased K+ concentrations. Thus, there was a significantly greater tendency for cells within the ventral hippocampus to generate burst responses.
mesh_terms: D000818:Animals; D004558:Electric Stimulation; D004827:Epilepsy / Q000503:physiopathology*; D005071:Evoked Potentials; D006624:Hippocampus / Q000187:drug effects / Q000503:physiopathology*; D066298:In Vitro Techniques; D008297:Male; D009928:Organ Specificity; D011188:Potassium / Q000494:pharmacology; D051381:Rats
chemical_list: D011188:Potassium