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New theory addresses frozen Earth paradox
DURHAM, N.C., Jan. 25 (UPI) -- Duke University Medical Center scientists say they've identified an auditory feedback pathway in the songbird brain that is needed to learn a song.
Professor Richard Mooney, senior author of the study, said the research lays the foundation for improving human speech, for example, in people whose auditory nerves are damaged and who must learn to speak without the benefit of hearing their own voices.
"This work is the first study to identify an auditory feedback pathway in the brain that is harnessed for learned vocal control," Mooney said, noting the research team also devised a way to alter the activity of the neurons to prove they interact with the motor networks that control singing.
The study was reported in the Jan. 13 online edition of the journal Neuron.
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