Previous experiments using serotonin antagonists and electrolytic raphe lesions suggest that the serotonergic input to the hippocampus inhibits low frequencey (< Hz) theta rhythm in the rat, whereas experiments using raphe stimulation suggest facilitation. The present experiments employed neurotoxic lesions of the serotonergic input to the hippocampus in an attempt to reproduce the effects of systemically administered antagonists. If the septal area is stimulated at frequencies between 6 a...Expand abstract
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Septal elicitation of hippocampal theta rhythm after localized de-afferentation of serotoninergic fibers.
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