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  • Title: [Functional role of the dorsal and ventral hippocampus in defensive behavior in the rat].
    Author: Chaĭchenko GM.
    Journal: Zh Vyssh Nerv Deiat Im I P Pavlova; 1984; 34(6):1109-15. PubMed ID: 6543074.
    Abstract:
    Bilateral electrolytic lesions of the dorsal hippocampus of white rats were shown to facilitate elaboration of a conditioned response of active avoidance of pain shock in a shuttle-box. The lesions of the ventral hippocampus had no effect on conditioning. The ventral hippocampal lesions led to a complete failure to form differential inhibition. In rats with the dorsal hippocampal lesions an acquisition of partial (up to 60 per cent) discrimination of stimuli was possible. The differences in avoidance conditioning and elaboration of differential inhibition in rats with the dorsal and ventral hippocampal lesions are supposed to be caused by the changes of general excitability and emotional state of animals as well as by a specific role of the ventral hippocampus in memory consolidation.
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