Post-stress analgesia in rats with partial amygdala lesions.
The role of the dorsal basal and the central nuclei of the amygdala under two modes of foot-shock analgesia was studied in 45 Möll-Wistar rats. Four minutes of continuous foot-shock produced post-stress analgesia in control and in all lesioned rats, but 20 min of regularly intermittent foot-shock did not evoke analgesia in rats with central nucleus lesion. This result indicates different involvement of dorsal basal and central nuclei in processing of stressful stimuli.
Werka
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Department of Neurophysiology, Nencki Institute of Experimental Biology, Warsaw, Poland.
D000679:Amygdala / Q000503:physiopathology*; D000818:Animals; D008297:Male; D017288:Pain Threshold / Q000502:physiology*; D051381:Rats; D011919:Rats, Inbred Strains; D013312:Stress, Physiological / Q000503:physiopathology*