A role for 5-HT1A receptors in the basolateral amygdala in the development of conditioned defeat in Syrian hamsters

► Activation of 5-HT1A receptors in the BLA impairs conditioned defeat. ► 5-HT1A receptors in the BLA modulate the display of stress-induced behavior. ► 5-HT1A receptors in the BLA modulate the formation of stress-related memories.