paleencephalon


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paleencephalon

 [pa″le-en-sef´ah-lon]
the (phylogenetically) old brain; all of the brain except the cerebral cortex and its dependences.

pa·le·en·ceph·a·lon

(pā'lē-en-sef'ă-lon),
L. Edinger's term for the metameric nervous system. Excludes cerebral cortex.
[paleo- + G. enkephalos, brain]

paleencephalon

An obsolete, imprecise term for the phylogenically oldest component of the brain.

paleencephalon

, paleoencephalon (pā″lē-ĕn-sĕf′ă-lŏn) (pā″lē-ō-ĕn-sĕf′ă-lŏn) [Gr. palaios, old, + enkephalos, brain]
The phylogenetically older portion of the brain. It includes all of the brain except the cerebral cortex and its allied structures.