neencephalon Anat.
(nɪɛnˈsɛfələn)
[a. G. neencephalon (L. Edinger Vorlesungen über den Bau der nervösen Zentralorgane des Menschen und der Tiere (ed. 7, 1908) II. xvi. 242): see neo- 1 e and encephalon.]
The phylogenetically younger part of the brain, comprising the cerebral cortex and related structures. So neenceˈphalic a.
| 1917 Jrnl. Compar. Neurol. XXVIII. 216 The emergence of the true cortex (neencephalon, or suprasegmental apparatus of the brain). Ibid. 217 Here the picture is uncomplicated by the great neencephalic systems. 1948 Brit. Jrnl. Psychol. XXXIX. 71 The infant is born without mental life... Only gradually does the neëncephalon exert its influence. 1972 Encycl. Psychol. II. 310/2 Neencephalon, the ‘new brain’ or ‘harmonious prolongation’ lying above the ‘old brain’ or paleencephalon. A fairly pure neencephalic area of the brain is the six-layer cerebral cortex (isocortex) in mammals... Under narcosis or the influence of alcohol the neencephalic systems are the first to cease to operate. |