diencephalon

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Related to Diencephalons: prosencephalon

diencephalon

 [di″en-sef´ah-lon]
1. the posterior part of the prosencephalon, consisting of the hypothalamus, thalamus, metathalamus, and epithalamus; the subthalamus is often considered to be a distinct division. See also brainstem.
2. the posterior of the two brain vesicles formed by specialization of the prosencephalon in the developing embryo. See illustration.
Diencephalon. Posterior (dorsal) A and anterior (inferior) B views of the base of the brain, showing the diencephalon in relation to the mesencephalon (midbrain) and rhombencephalon (hindbrain). From Dorland's, 2000.

di·en·ceph·a·lon

, pl.

di·en·ceph·a·la

(dī'en-sef'ă-lon, -sef'ă-lă), [TA]
The caudal part of the prosencephalon composed of the dorsal thalamus (or thalamus) epithalamus, subthalamus, and hypothalamus. the geniculate bodies, sometimes referred to as the metathalamus, are actualy part of the thalamus.
[G. dia, through, + enkephalos, brain]

diencephalon

(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.

di·en·ceph·a·lon

, pl. diencephala (dī'en-sef'ă-lon, -lă) [TA]
That part of the prosencephalon composed of the epithalamus, dorsal thalamus, subthalamus, and hypothalamus.
[G. dia, through, + enkephalos, brain]

diencephalon

The central, lower part of the brain that contains the BASAL GANGLIA, THE THALAMUS, the HYPOTHALAMUS, the PITUITARY gland.

diencephalon

the part of the forebrain that contains the thalamus and hypothalamus and lies beneath the cerebral hemispheres.

Diencephalon

A part of the brain that binds the mesencephalon to the cerebral hemispheres. Considered by some as part of the brain stem.
Mentioned in: Korsakoff's Syndrome
References in periodicals archive ?
Tadpole diencephalon. The differential display strategy identified three candidate cDNA transcripts altered by OP, one transcript altered by UV-B, and two molecules that were unchanged based on a similar band intensity across all treatments (Table 1).
Tadpole diencephalon. Octylphenol (1 nM; group O[P.sub.1]) induced a 3-fold increase in the expression of NAP4 mRNA (Figure 3A), confirming the initial differential display results (Table 1).
As in the tadpole diencephalon (Figure 3B), BAI3 mRNA levels were increased by UV-B treatment in the metamorph hypothalamus (Figure 4C).
NAP4 expression was increased by 1 nM OP in the tadpole diencephalon, verifying the pattern observed in the initial differential display.
Although a decrease in expression of either BAI2 or BAI3 was not observed in the tadpole diencephalon, early exposure to OP did decrease BAI2 expression in the metamorph hypothalamus.