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Rod bipolar cells do not synapse directly on to ganglion cells. Instead, rod bipolar cells synapse on to a Retina amacrine cell, which in turn excite cone ON bipolar cells (via gap junctions) and inhibit cone OFF bipolar cells (via glycine-mediated inhibitory synapses) thereby overtaking the cone pathway in order to send signals to ganglion ...
Bipolar cells convey impulses from photoreceptors (rods and cones) to ganglion cells, [6] which in turn transport the visual signals to the brain through the optic nerve. Bipolar cells come in two varieties, having either an on-center or an off-center receptive field, each with a surround of the opposite sign. The off-center bipolar cells have ...
The amacrine II cells transfer signals bidirectionally, allowing for impressive synchronization of responses from this network. [2] From this network, the bipolar cells each turn on or off to control the intensity of light perceived, and to contrast between colors. [6] Interconnectivity between Amacrine II cells [2]
The horizontal cells lie in the outer part of the inner nuclear layer and possess somewhat flattened cell bodies.. Their dendrites divide into numerous branches in the outer plexiform layer, while their axons run horizontally for some distance and finally ramify in the same layer.
Visual phototransduction is the sensory transduction process of the visual system by which light is detected by photoreceptor cells (rods and cones) in the vertebrate retina.A photon is absorbed by a retinal chromophore (each bound to an opsin), which initiates a signal cascade through several intermediate cells, then through the retinal ganglion cells (RGCs) comprising the optic nerve.
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English: Simplified cross section of a planar npn Bipolar junction transistor showing the emitter, base and collector contacts and the respective regions with the silicon doping type. Replacement SVG version of File:Npn BJT cross section.PNG