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horizontal cells
(redirected from Horizontal cell)

   Also found in: Dictionary/thesaurus, Medical, Legal, Wikipedia 0.01 sec.
horizontal cells [‚här·ə‚zänt·əl ′sels]
(neuroscience)
Interneurons located in the outer plexiform layer of the vertebrate retina that influence retinal signal processing in response to visual stimuli at the level of contact between the photoreceptor cells and the bipolar cells.


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Focusing their efforts on the melanopsin light sensor, which is responsible for sensing day and night but barely involved - in mammals, at least - in seeing images, Yau's team looked for melanopsin-containing cells in other vertebrates, and found some in the retinal horizontal cells in goldfish and catfish.
Although this region is bigger in the left hemisphere than in the right hemisphere in humans, chimps, and rhesus monkeys, only the human planum temporale has larger cortical minicolumns (neurons that line up vertically between horizontal cell layers or sheets) and wider spaces between those columns on the left side.
In the normal retina (Figure 6(a)), anti-GABA antibody labels the inner plexiform layer (IPL), the amacrine cells located on the inner lamina of the INL, and the horizontal cells located on the outer lamina of the INL.
 
 
 
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