There’s a small cluster of neurons the size of an almond in the back of each of our heads. It’s called the amygdala from the Greek word for almond. We never really think about it — until it’s too late ...

Cannabinoid receptors, through which marijuana exerts its effects, have been found in a key emotional hub in the brain involved in regulating anxiety and the flight-or-fight response. This is the ...

Fear is an adaptive emotion that helps us cope with threatening situations. Deep within the temporal lobe of the brain is the amygdala, the most studied brain area involved in fear. The amygdala uses ...

When I was a neurology resident at the Harvard Neurological Unit in the late 1960s, Dr. Vernon Mark, a professor of neurosurgery, presented a patient at a teaching conference. This woman was having ...