翻訳と辞書 Words near each other ・ Lateral cutaneous nerve of thigh ・ Lateral dorsal cutaneous nerve ・ Lateral dorsal nucleus of thalamus ・ Lateral earth pressure ・ Lateral electrical surface stimulation ・ Lateral epicondyle ・ Lateral epicondyle of the femur ・ Lateral epicondyle of the humerus ・ Lateral eruption ・ Lateral expansion ・ Lateral flap ・ Lateral flow test ・ Lateral force variation ・ Lateral funiculus ・ Lateral genicular artery ・ Lateral geniculate nucleus ・ Lateral giant interneuron ・ Lateral globus pallidus ・ Lateral grey column ・ Lateral horn ・ Lateral horn of insect brain ・ Lateral hypothalamus ・ Lateral inguinal fossa ・ Lateral inhibition ・ Lateral intermuscular septum ・ Lateral intermuscular septum of thigh ・ Lateral internal sphincterotomy ・ Lateral intraparietal cortex ・ Lateral lemniscus ・ Lateral ligament of malleus Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Lateral geniculate nucleus ： ウィキペディア英語版 Lateral geniculate nucleus The lateral geniculate nucleus (LGN) (also called the lateral geniculate body or lateral geniculate complex) is a relay center in the thalamus for the visual pathway. It receives a major sensory input from the retina. The LGN is the main central connection for the optic nerve to the occipital lobe. Each LGN has six layers of neurons (grey matter) alternating with optic fibers (white matter). It is small, ovoid, ventral projection at the termination of optic tract on each side of the brain. The LGN and the medial geniculate nucleus which deals with auditory information are both thalamic nuclei and so are present in both hemispheres. The LGN receives information directly from the ascending retinal ganglion cells via the optic tract and from the reticular activating system. Neurons of the LGN send their axons through the optic radiation, a direct pathway to the primary visual cortex. In addition, the LGN receives many strong feedback connections from the primary visual cortex. In humans as well as other mammals, the two strongest pathways linking the eye to the brain are those projecting to the dorsal part of the LGN in the thalamus, and to the superior colliculus.〔Goodale, M. & Milner, D. (2004)''Sight unseen.''Oxford University Press, Inc.: New York.〕 ==Structure== Both the left and right hemisphere of the brain have a lateral geniculate nucleus, named after its resemblance to a bent knee (''genu'' is Latin for "knee"). In humans as well as in many other primates, it has layers of cell bodies that are interleaved with layers of koniocellular cells. In humans the LGN is normally described as having six distinctive layers. The inner two layers, (1 and 2) are called the magnocellular layers, while the outer four layers, (3,4,5 and 6), are called parvocellular layers. An additional set of neurons, known as the koniocellular layers, are found ventral to each of the magnocellular and parvocellular layers.〔Carlson, N. R. (2007)''Physiology of Behavior: ninth edition.''Pearson Education, Inc.: Boston.〕 This layering is variable between primate species, and extra leafleting is variable within species. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lateral geniculate nucleus」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.