forebrain

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prosencephalon

 [pros″en-sef´ah-lon]
1. the portion of the brain developed from the anterior of the three primary brain vesicles in the early embryo, comprising the diencephalon and telencephalon.
2. the most anterior of the primary brain vesicles; called also forebrain.

pros·en·ceph·a·lon

(pros'en-sef'ă-lon), [TA]
The anterior primordial cerebral vesicle and the most rostral of the three primary brain vesicles of the embryonic neural tube; it subdivides to form the diencephalon and telencephalon.
Synonym(s): forebrain vesicle ☆ , forebrain ☆ , proencephalon
[G. prosō, forward, + enkephalos, brain]

forebrain

/fore·brain/ (-brān) prosencephalon.

forebrain

(fôr′brān′)
n.
1. The most anterior of the three primary regions of the embryonic brain from which the telencephalon and diencephalon develop.
2. The segment of the adult brain that develops from the embryonic forebrain and includes the cerebrum, thalamus, and hypothalamus.

forebrain

pros·en·ceph·a·lon

(pros'en-sef'ă-lon) [TA]
The anterior primordial cerebral vesicle and the most rostral of the three primary brain vesicles of the embryonic neural tube; it subdivides to form the diencephalon and telencephalon.
Synonym(s): forebrain.
[G. prosō, forward, + enkephalos, brain]

forebrain

that part of the brain which gives rise to the CEREBRAL HEMISPHERES, olfactory lobes, the PINEAL GLAND, PITUITARY GLAND and the OPTIC CHIASMA (which carries nerve fibres from the eyes to the midbrain). It is marked by a constriction in the developing embryo where the brain appears to be three-lobed, the forebrain, MIDBRAIN and HINDBRAIN.

forebrain

References in periodicals archive ?
Comparative aspects of forebrain organization in the ray-finned fishes: Touchstones or not?
Hallmarks of a common forebrain vertebrate plan: Specialized pallial areas for spatial, temporal and emotional memory in actinopterygian fish.
Reversal learning in forebrain ablated and olfactory tract sectioned teleost, carassiusauratus.
Specific and permanent deficits in instrumental avoidance responding following forebrain ablation in The Goldfish.
Long-term memory deficits for habituation of predatory behavior in the forebrain ablated goldfish (carassiusauratus).
Conservation of spatial memory function in the pallial forebrain of reptiles and ray-finned fishes.
Impaired learning of a color reversal task after NMDA receptor blockade in the pigeon (Columba livia) associative forebrain (neostriatum caudolaterale).
Ascending connections to the forebrain in the tegu lizard.
Bilateral feedback projections to the forebrain in the premotor network for singing in zebra finches.
The distribution and cellular localization of glutamic acid decarboxylase-65 (GAD65) mRNA in the forebrain and midbrain of domestic chick.
The distribution of GABA-containing perikarya, fibers, and terminals in the forebrain and midbrain of pigeons, with particular reference to the basal ganglia and its projection targets.
This section presents a brief survey of the forebrain structures in mammals and birds (Nieuwenhuys et al.