Additionally, a two-component theory of absolute pitch is presented, which conceives of this rare ability as consisting of a more common ability, pitch memory, and a separate, less common ability, pitch labeling. Forty-six subjects sang two different popular songs and their productions were compared to the actual pitches used in recordings of those songs.
Individuals can collect their own data and compare it to the classic results.
An animal that blends in with its environment is much easier to see when it's moving than when it's still. This demonstration shows the effect. Lance Hahn's Retina Reference Information on the structure and functioning of the eye. It has been known since the first electrical recordings of taste nerves that they are sensitive to temperature as well as to chemicals, but it was not known how the brain interprets this thermal stimulation. Thermal taste shows that it is interpreted as taste, not temperature.