lateral geniculate nucleus


Also found in: Dictionary, Thesaurus, Financial, Acronyms, Encyclopedia, Wikipedia.

dorsal lateral geniculate nu·cle·us

[TA]
main division of the lateral geniculate body; consists of two magnocellular layers [TA] (strata magnocellularia [TA]) and four parvocellular layers [TA] (strata parvocellularia [TA]) and serves as a processing station in the major pathway from the retina to the cerebral cortex, receiving fibers from the optic tract and giving rise to the geniculocalcarine radiation to the visual cortex in the occipital lobe.
Farlex Partner Medical Dictionary © Farlex 2012

lateral geniculate nucleus

The visual relay nucleus of the thalamus. It is a set of nuclei located on the bottom rear edges of the thalamus, lateral to the medial geniculate nucleus. Axons from the retinal ganglion cells of the retina reach the lateral geniculate via the optic nerve and optic tract and then synapse in topographic order. The outflow axons from the lateral geniculate neurons run in the optic radiation and synapse in the primary visual cortex in the occipital hemisphere, again maintaining their topographic organization.
See also: nucleus
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
Birds have GABAergic interneurons throughout the pallium, including within the thalamorecipient sensory areas (Sun et al., 2005), but in contrast to mammals, the major sensory relay nuclei, including nuclei rotundus and ovoidalis and the dorsal lateral geniculate nucleus, are only very sparsely populated with GABAergic neurons (Mpodozis et al., 1996; Sun et al., 2005).
Physiological studies have demonstrated smaller cell bodies in the thalamic lateral geniculate nucleus of dyslexics, which are limited to magnocellular layers (Livingstone, Rosen, Drislane, & Galaburda, 1991).
Principal-component analysis was used to find a set of orthonormal basis vectors that could span the chromatic space of neurons in the parvocellular layers of the macaque monkey lateral geniculate nucleus (LGN).

Full browser ?