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The third alternative: Duplication of collopallium in isocortical evolution

Published online by Cambridge University Press:  12 April 2004

Ann B. Butler
Ann B. Butler*
Affiliation:
Krasnow Institute for Advanced Study, George Mason University, Fairfax, VA22030
*
[email protected]
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Abstract:

One hypothesis of isocortical evolution requires tangential migration of glutaminergic neurons. A second requires invasion of collothalamic afferents into the dorsal pallium, a territory that in sauropsids is solely lemnopallial. A third alternative is noted here – duplication of the original collopallial territory. The duplicated region would be formed by radial migration of excitatory neurons and would maintain its collothalamic innervation.

Type
Open Peer Commentary
Information
Behavioral and Brain Sciences , Volume 26 , Issue 5 , October 2003 , pp. 553 - 554
Copyright
Copyright © Cambridge University Press 2003

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