Amygdala and periaqueductal gray lesions only partially attenuate unconditional defensive responses in rats exposed to a cat.

@article{Oca2004AmygdalaAP,
  title={Amygdala and periaqueductal gray lesions only partially attenuate unconditional defensive responses in rats exposed to a cat.},
  author={Beatrice M de Oca and Michael S Fanselow},
  journal={Integrative physiological and behavioral science : the official journal of the Pavlovian Society},
  year={2004},
  volume={39 4},
  pages={318-33}
}
Defensive responses to a cat were observed in rats given excitotoxic lesions of the central nucleus of the amygdala (ACe), dorsolateral periaqueductal gray (dlPAG), ventral periaqueductal gray (vPAG), or sham lesions. Rats were placed adjacent to a compartment containing a cat. Sham-lesioned rats avoided the area nearest the cat and preferred the area furthest away from the cat. They also exhibited numerous defensive responses including, climbing, escape from the apparatus, and freezing. Rats… CONTINUE READING