In a laboratory setting, a rat has experienced shock each time it has been placed inside chamber a. over time, the rat shows a fear response as soon as it is placed in the chamber. after the destruction of the of the amygdala, the animal no longer shows a fear response when placed in the chamber.

Central nucleus.

Explanation:

The central nucleus of the amygdala is a nucleus within the amygdala. It serves as the major output nucleus of the amygdala and participates in receiving and processing pain information. If this is destroyed, the animal wont show a fear response again.

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