Behavioral and Brain Sciences

Open Peer Commentary

Roles of allocortex and centrencephalon in intentionality and consciousness

Walter J. Freeman a1
a1 Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley, CA 94720-3206.

Article author query
freeman wj   [PubMed][Google Scholar] 


“Decortication” does not distinguish between removing all cerebral cortex, including three-layered allocortex or just six-layered neocortex. Functional decortication, by spreading depression, reversibly suppresses only neocortex, leaving minimal intentionality. Removal of all forebrain structures except a hypothalamic “island” blocks all intentional behaviors, leaving only tropisms. To what extent do Merker's examples retain allocortex, and how might such residues affect his interpretations?

(Published Online May 1 2007)