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Size matters: Length of songbirds’ playlists linked to brain region proportions
Date:9/18/2011

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The research suggests that relative brain area sizes may offer a mechanism by which a prominent form of evolution has worked. In birds and perhaps in humans, selection for increased learning capacity may have acted by prolonging the development of the last parts of the brain to grow. Humans are able to speak and to set and achieve complex goals because of prolonged development of higher brain areas, such as the cortex and frontal cortex in particular. These areas of the brain are the last to mature and do not fully develop until humans are in their early 20s, DeVoogd said.

In the study, the researchers collected three males each from 49 common species representing an extensive variety of songbirds from the United States, Europe and South Africa, where each bird was actively singing to attract females as part of his reproductive cycle. They then examined and measured the brain areas.


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Contact: Syl Kacapyr
vpk6@cornell.edu
607-255-7701
Cornell University
Source:Eurekalert

Page: 1 2

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