Epileptiform burst responses in ventral vs dorsal hippocampal slices
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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.
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