neocortex

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Related to neocortical: neocortical death, Neocortical column

cortex

 [kor´teks] (pl. cor´tices) (L.)
the outer layer of an organ or other structure, as distinguished from its inner substance or medulla. adj., adj cor´tical.
adrenal cortex (cortex of adrenal gland) the outer, firm layer comprising the larger part of the adrenal gland; it secretes mineralocorticoids, androgens, and glucocorticoids.
cerebellar cortex the superficial gray matter of the cerebellum.
cerebral cortex (cortex cerebra´lis) the convoluted layer of gray matter covering each cerebral hemisphere. See also brain.
renal cortex the granular outer layer of the kidney, composed mainly of glomeruli and convoluted tubules, extending in columns between the pyramids that constitute the renal medulla.
striate cortex part of the occipital lobe that receives the fibers of the optic radiation and serves as the primary receiving area for vision. Called also first visual area.
visual cortex the area of the occipital lobe of the cerebral cortex concerned with vision; the striate cortex is also called the first visual area, and the adjacent second and third visual areas serve as its association areas.

i·so·cor·tex

(ī'sō-kōr'teks), [TA]
O. and C. Vogt term for the larger part of the mammalian cerebral cortex, distinguished from the allocortex by being composed of a larger number of nerve cells arranged in six layers.
See also: cerebral cortex.

neocortex

/neo·cor·tex/ (-kor´teks) the newer, six-layered portion of the cerebral cortex, showing the most highly evolved stratification and organization. Cf. archicortex and paleocortex.
Enlarge picture
Coronal section through the neocortex, showing the six layers.

neocortex

(nē′ō-kôr′tĕks′)
n. pl. neocor·tices (-tĭ-sēz′) or neocor·texes
The dorsal region of the cerebral cortex, especially large in primates, thought to have evolved more recently than other parts of the brain. Also called neopallium.

ne′o·cor′ti·cal (-tĭ-kəl) adj.

neocortex

[-kôr′teks]
Etymology: Gk, neos, new; L, cortex, bark
the most recently evolved part of the brain. In humans the neocortex includes all of the cerebral cortex except for the hippocampal and piriform areas.

ne·o·cor·tex

(nē'ō-kōr'teks) [TA]
The newest part of the cerebral cortex, involved in higher functions such as sensory perception, generation of motor commands, spatial reasoning, conscious thought, and in humans, language; consists of gray matter surrounding the deeper white matter of the cerebrum; accounts for approximately 23% of the neurons in brains of human males and 19% of the neurons in human females.
Synonym(s): neopallium.
[G. neos, new, + L. cortex, bark]

neocortex (nēˈ·ō·kor′·teks),

n the outer surface of the cerebrum that is responsible for higher functions reason, memory, cognition in human beings.

neocortex

neopallium.
References in periodicals archive ?
Seizure type Clinical features Generalized Immediate loss of consciousness +/- generalized convulsions without localization Structural lesion less common Partial Simple Focal onset mapping to anatomic area Can secondarily generalize Underlying lesion more common Complex Partial seizure with loss of consciousness Can secondarily generalize Temporal lobe most common, but can also arise from any neocortical area Table 2.
Alzheimer disease neuropathologic change can be semiquantitated with Bielschowsky or Gallyas silver or thioflavin-S fluorescent stains of hippocampus and neocortical sections, and the degree of ADNC reported.
Jn, Yang Sn and Hsiehwy, 1998:Free radicals are involved in methylmethacrylate induced neurotoxicity in human primary neocortical cell cultures.
PARIS - A panel of blood-based biomarkers for neocortical amyloid burden - a known predictor of progression to Alzheimer's disease - shows promise as an effective and economical screening test for early identification of individuals at risk for _the disease, according to findings from an Australian study highlighted at the meeting.
Measurements of the neocortical gray and white matter, frontal lobe gray and white matter and the hippocampus were performed.
5,6) Using this protocol, the number of senile/neuritic plaques is assessed semiquantitatively in neocortical regions where they are most dense as none, sparse (less than 2 per 100X light microscopic field), moderate (approximately 6), or frequent (more than 30).
Rat basal forebrain cholinergic lesion affects neuronal nitric oxide synthase activity in hippocampal and neocortical target regions.
32 g/dl) did not affect NMDA receptor--mediated currents in another neuronal population that was shown to be particularly sensitive to ethanol-induced cell death: neocortical layer II/III neurons from neonatal rats (Sanderson et al.
Modulating emotional responses: effects of a neocortical network on the limbic system.
This means that the brain sorts out the currently irrelevant memories before they are consciously recognized and leaves them out of the processing stage characterized by widespread neocortical synchronization.
Jaak Panksepp and colleagues argue that the pain system is closely related to the affective system, which is encoded by phylogenetically older brain structures, in contrast to neurological processes dependent on neocortical activation.