α. 1900s– palaeencephalon, 1900s– palaeëncephalon, 1900s– paleencephalon.
β. 1900s– paleoencephalon.
palaeencephalonpaleencephalonn.
/ˌpalɪɛnˈsɛfəlɒn/, /ˌpeɪlɪɛnˈsɛfəlɒn/, U.S. /ˌpeɪliənˈsɛfəˌlɑn/, /ˌpæliənˈsɛfəˌlɑn/; see also encephalon n. Chiefly Psychology.
A phylogenetically older portion of the vertebrate brain, as contrasted with the neencephalon.
ΘΚΠ
the world > life > the body > nervous system > cerebrospinal axis > brain > parts of brain > [noun] > phylogenetically old or new parts
striatum1889
neopallium1901
archipallium1908
neencephalon1908
palaeencephalon1908
neocortex1909
neostriatum1909
palaeocortex1909
palaeopallium1909
palaeostriatum1913
neothalamus1917
palaeothalamus1920
neocerebellum1922
palaeocerebellum1922
1908 H. W. Rand tr. L. Edinger in Jrnl. Compar. Neurol. & Psychol. 18 438 I divide the brain into the palæëncephalon and the neëncephalon.
1913 Mind 22 454 According to Edinger, the human brain is an organ of three levels: the palæencephalon, or receptive-motor mechanism; the neencephalon, or gnostic-practical mechanism; and the association centres, or organ of intelligence.
1933 B. Gadelius Human Mentality xiv. 416 Jaensch here recalls the recently proved difference with regard to the origin of vagus and sympathicus, the former developing immediately from the midbrain (palaeencephalon).
1988 Jrnl. Neurochem. 51 1839 There was a regional selectivity of tubulin induction by ammonia in rat brain. Whereas the cerebellum remained unaltered, the paleencephalon showed the highest increase.
This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022).
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n.1908