Birth of projection neurons in adult avian brain may be related to perceptual or motor learning.

Alvarez-Buylla A, Kirn JR, Nottebohm F. Birth of projection neurons in adult avian brain may be related to perceptual or motor learning. Science. 1990 Sep 21; 249(4975):1444-6.

1990
http://profiles.ucsf.edu/profile/266115
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Alvarez-Buylla A, Kirn JR, Nottebohm F