lateral geniculate body
Quick Summary
The lateral geniculate body (LGB) is a crucial relay station in the visual pathway, located within the thalamus of the brain. It receives input from the optic tracts, which carry visual information from both retinas.12
The LGB has six layers, and importantly, it keeps visual information from each eye separate. Fibers from the left half of the visual field of both eyes go to the right LGB, and vice versa, allowing for the comparison of images from both eyes to perceive depth.12
The LGB processes this visual information, emphasizing contrast and non-uniformity, before sending it on to the primary visual cortex in the occipital lobe for further analysis. This processing helps the brain filter out unnecessary information and focus on important visual details like contours and movement.23
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photoreceptionCentral processing of visual information…which extend to the two lateral geniculate nuclei (LGN) in the thalamus. The LGN act as way stations on the pathway to the primary visual cortex, in the occipital (rear) area of the cerebral cortex. Some axons also go to the superior colliculus, a paired formation on the roof of…
Read More…which extend to the two lateral geniculate nuclei (LGN) in the thalamus. The LGN act as way stations on the pathway to the primary visual cortex, in the occipital (rear) area of the cerebral cortex. Some axons also go to the superior colliculus, a paired formation on the roof of…
Read More- photoreceptionCentral processing of visual information
The LGN in humans contain six layers of cells. Two of these layers contain large cells (the magnocellular [M] layers), and the remaining four layers contain small cells (the parvocellular [P] layers). This division reflects a difference in the types of ganglion cells that supply the…
Read MoreThe LGN in humans contain six layers of cells. Two of these layers contain large cells (the magnocellular [M] layers), and the remaining four layers contain small cells (the parvocellular [P] layers). This division reflects a difference in the types of ganglion cells that supply the…
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human eyeLateral geniculate bodyThe dorsal (posterior) nucleus of the lateral geniculate body, where the optic tract fibres relay, has six layers, and the crossed fibres relay in layers 1, 4, and 6, while the uncrossed relay in layers 2, 3, and 5; thus, at this…
Read MoreThe dorsal (posterior) nucleus of the lateral geniculate body, where the optic tract fibres relay, has six layers, and the crossed fibres relay in layers 1, 4, and 6, while the uncrossed relay in layers 2, 3, and 5; thus, at this…
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human nervous systemVision…and Y-cells connect to the lateral geniculate nucleus of the thalamus, while W-cells connect primarily to the superior colliculus of the midbrain. From these regions, input from the X-cells travels mainly to the primary visual area, that from the Y-cells to the secondary visual area, and that from the W-cells…
Read More…and Y-cells connect to the lateral geniculate nucleus of the thalamus, while W-cells connect primarily to the superior colliculus of the midbrain. From these regions, input from the X-cells travels mainly to the primary visual area, that from the Y-cells to the secondary visual area, and that from the W-cells…
Read More- human eyeThe retina
…and the cells of the lateral geniculate body, the latter being a visual relay station in the diencephalon (the rear portion of the forebrain).
Read More…and the cells of the lateral geniculate body, the latter being a visual relay station in the diencephalon (the rear portion of the forebrain).
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