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palæoˈcortex Anat.
Also (chiefly U.S.) paleo-.
[mod.L., f. palæo-, paleo- b + cortex.]
A phylogenetically older portion of the cerebral cortex, which is coextensive with the palæopallium.
1909,1947[see neocortex]. 1964J. Z. Young Model of Brain xix. 306 In the vertebrate brain there are also such tiers of circuits provided, by the hypothalamus, thalamus, palaeocortex and neocortex.
Hence palæoˈcortical a., of or pertaining to the palæocortex.
1909Arch. Neurol. & Psychiatry IV. 162 The palæocortical arrangement..is not nearly as typical as in the ventral grey substance. 1964J. Z. Young Model of Brain vi. 110 The palaeocortical centres and basal parts of the forebrain are also concerned largely with ‘motivation’ as well as being involved in learning. |