Final answer:
The amygdala is the brain structure involved in generating withdrawal motivational and emotional states.
Step-by-step explanation:
The brain structure involved in generating withdrawal motivational and emotional states is the amygdala. The amygdala is a group of nuclei in the medial region of the temporal lobe that is part of the limbic lobe. It has strong connections with the hypothalamus and sends signals along the medial forebrain bundle to stimulate the sympathetic fight-or-flight response.