American psychologist
Daniel Joseph Levitin, PhD, FRSC, (born December 27, 1957, San Francisco) is an American cognitive psychologist, neuroscientist, best-selling author, musician and record producer. He is James McGill Professor of psychology and behavioral neuroscience at McGill University in Montreal, Quebec, Canada, with additional appointments in music theory, computer science, and education; Director of the Laboratory for Music Perception, Cognition and Expertise at McGill, and Dean of Arts and Humanities at The Minerva Schools at KGI. He is an elected a Fellow of the American Association for the Advancement of Science, the Association for Psychological Science and the Royal Society of Canada.
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Primates, some birds, and humans have mirror neurons... that fire both when performing an action and when observing someone else performing... We've found mirror neurons in Broca's area, a part... involved in speaking, and learning to speak. ...our mirror neurons may be firing when we see or hear musicians perform ... in preparation for being able to mirror or echo them back as part of a signaling system.
During the first six months or so of life... the infant brain is unable to clearly distinguish the source of sensory inputs; vision, hearing, and touch meld into a unitary perceptual representation. ...inputs from the various sensory receptors may connect to many different parts of the brain, pending pruning that will occur later in life. As Simon Baron-Cohen has described it, with all this sensory cross talk, the infant lives in a state of complete psychodelic splendor (without the aid of drugs).
Cosmides and Tooby argue that music's function in the developing child is to help prepare its mind for a number of complex cognitive and social activities, exercising the brain so that it will be ready for the demands placed on it by language and social interaction. ...Mother-infant interactions involving music almost always entail both singing and rhythmic movement...
It is only in the last five hundred years that music has become a spectator activity—the thought of a musical concert in which a class of "experts" performed for an appreciative audience was virtually unknown throughout our history as a species. And it has only been in the last hundred years or so that the ties between musical sound and human movement have been minimized.