corticifugal

from The Century Dictionary.

• Originating in and running from the cortex, or outer layer of the cerebrum or cerebellum, into adjacent regions, such as the pulvinar and quadrigeminal bodies or the various fiber-tracts.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective of a nerve fiber passing outward from the cerebral cortex