diencephalon


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di·en·ceph·a·lon

 (dī′ĕn-sĕf′ə-lŏn′, -lən)
n.
The posterior part of the forebrain that connects the midbrain with the cerebral hemispheres, encloses the third ventricle, and contains the thalamus and hypothalamus. Also called betweenbrain, interbrain.


di·en·ce·phal′ic (-sə-făl′ĭk) adj.

diencephalon

(ˌdaɪɛnˈsɛfəˌlɒn)
n, pl -la (-lə)
(Anatomy) the part of the brain that includes the basal ganglia, thalamus, hypothalamus, and associated areas
diencephalic adj

di•en•ceph•a•lon

(ˌdaɪ ɛnˈsɛf əˌlɒn)

n., pl. -lons, -la (-lə).
the posterior section of the forebrain including the thalami and hypothalamus.
[1880–85; di-3 + encephalon]
di`en•ce•phal′ic (-səˈfæl ɪk) adj.

diencephalon

The “between brain” area of the forebrain between the midbrain and cerebral hemispheres. It includes the thalamus and the hypothalamus.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.diencephalon - the posterior division of the forebraindiencephalon - the posterior division of the forebrain; connects the cerebral hemispheres with the mesencephalon
corpus mamillare, mamillary body, mammillary body - one of two small round structures on the undersurface of the brain that form the terminals of the anterior arches of the fornix
infundibulum - any of various funnel-shaped parts of the body (but especially the hypophyseal stalk)
pineal eye, third eye - a sensory structure capable of light reception located on the dorsal side of the diencephalon in various reptiles
neural structure - a structure that is part of the nervous system
nervus opticus, optic nerve, optic tract, second cranial nerve - the cranial nerve that serves the retina
hypophysis, pituitary, pituitary body, pituitary gland - the master gland of the endocrine system; located at the base of the brain
forebrain, prosencephalon - the anterior portion of the brain; the part of the brain that develops from the anterior part of the neural tube
basal ganglion - any of several masses of subcortical grey matter at the base of each cerebral hemisphere that seem to be involved in the regulation of voluntary movement
thalamus - large egg-shaped structures of grey matter that form the dorsal subdivision of the diencephalon
hypothalamus - a basal part of the diencephalon governing autonomic nervous system
Translations

di·en·ceph·a·lon

n. diencéfalo, parte del cerebro.
References in periodicals archive ?
Appraisals of brain regions interrelated with sleep-wake regulation and vitamin D target neurons in the diencephalon and several brainstem nuclei suggested direct central effects of vitamin D on sleep; thus sleep disorders have become epidemic because of widespread hypovitaminosis D (HD)14.
The diencephalon of the brain is believed to play a significant role in regulating the sympathetic-parasympathetic ner vous response through inhibitory control.
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It incorporates input from two hemispheres, four lobes in each hemisphere (frontal, temporal, parietal, and occipital), and all five layers of the brain (from the uppermost telencephalon and adjacent diencephalon below it to the middle layers of the mesencephalon to the lower levels of the metencephalon and myelencephalon).
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Structural abnormalities of upper brain stem and lower diencephalon or more widespread changes in both cerebral hemispheres.
Soon, the thalamus was removed from the definition, but the subthalamic nucleus in the diencephalon and the substantia nigra in the midbrain were included, because these two nuclei have close associations with the globus pallidus.
The optic nerve is a cranial nerve that is technically a part of the central nervous system because of its embryological derivation as an outpouching of the diencephalon. The myelin covering the optic nerve is derived from oligodendrocytes hence conditions like peripheral neuropathy do not affect the optic nerve.1 Schwannomas have been described to have an association with Neurofibromatosis type 1 (NF 1), which is a genetic condition due to mutation of a gene on chromosome 17.
Whole brains from adult carp were dissected and five parts of the brain (telencephalon, diencephalon, mesencephalon, epencephalon and macromyelon) were carefully separated.
Anatomically, the small teleost brain shares many features with the mammalian brain, containing a cerebellum, telencephalon, diencephalon, spinal cord, and hypothalamus (Guo 2004; Mueller et al.
Also, loss of CSF results in reduced buoyancy of the brain, which leads to sagging of brain structures including the diencephalon and brain stem.