Want to know why loud music gives you such a buzz?
Dr. Todd's team have found that there is an organ in our inner ear, seemly inherited from our fish ancestors, that induces pleasure from certain sound frequencies. Particularly those of loud rock, or dance clubs. This organ the sacculus, is part of the balance regulating system of the inner-ear. It seems to be sensitive to noises above 90 decibels: "the distributions of frequencies that are typical in rock concerts and at dance clubs almost seemed designed to stimulate the sacculus.
They are absolutely smack bang in this range of sensitivity.... .large groups of singing people, such as a choir or sports event could also trigger the mechanism."
Dr. Todd may have come accross the root cause for a lot of our cultural forces. Similarly, motion (such as bungee-jumping, or swinging) stimulates other parts of the inner-ear balance-centre. All these areas have nervous connections to the hypothalamus, that part of your brain responsible for urges such as hunger, sex and other hedonistic responses.