““Television's ability to evoke the fear response is especially significant because Americans spend so much of their lives watching TV. An important explanation for why we spend so much time motionless in front of the screen is that television constantly triggers the "orienting response" in our brains. As I noted in the introduction, the purpose of the orienting response is to immediately establish in the present moment whether or not fear is appropriate by determining whether or not the sudden movement that has attracted attention is evidence of a legitimate threat. (The orienting response also serves to immediately focus attention on potential prey or on individuals of the opposite sex). When there is a sudden movement in our field of vision, somewhere deep below the conscious brain a message is sent: LOOK! So we do. When our ancestors saw the leaves move, their emotional response was different from and more subtle than fear. The response might be described as "Red Alert! Pay attention!". Now, television commercials and many action sequences on television routinely activate that orienting reflex once per second. And since we in this country, on average, watch television more than four and a half hours per day, those circuits of the brain are constantly being activated. The constant and repetitive triggering of the orienting response induces a quasi-hypnotic state. It partially immobilizes viewers and creates an addiction to the constant stimulation of two areas of the brain: the amygdala and the hippocampus (part of the brain's memory and contextualizing system). It's almost as though we have a "receptor" for television in our brains.””
