... sounds that cause fear in rats have been traced along the auditory pathway to the thalamus, the cortex and the amygdala, arousing a memory that leads to a higher heart rate and the cessation of ... a quickand-dirty reaction mechanism The thalamus activates the amygdala at about the same time as it activates the cortex The arrangement may enable emotional responses to begin in the amygdala ... in the thalamo-amygdala pathway Thomas H Brown and Paul Chapman and their colleagues at Yale discovered LTP in a cortical projection to the amygdala Other researchers, including Davis and Fanselow,...