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Bipolar neurons, classified as second-order retinal neurons, play a crucial role in translating responses to light into a neural code for vision. [5] Often found in the retina, bipolar cells are crucial as they serve as both direct and indirect cell pathways. The specific location of the bipolar cells allow them to facilitate the passage of ...
Bipolar cells receive synaptic input from either rods or cones, or both rods and cones, though they are generally designated rod bipolar or cone bipolar cells. There are roughly 10 distinct forms of cone bipolar cells, however, only one rod bipolar cell, due to the rod receptor arriving later in the evolutionary history than the cone receptor ...
One study on DAT binding in acutely depressed people with bipolar reported reductions in the caudate but not putamen. [ 92 ] Studies of serotonin's primary metabolite 5-HIAA have been inconsistent, [ 93 ] although limited evidence points towards reduced central serotonin signaling in a subgroup of aggressive or suicidal patients. [ 91 ]
For most people with bipolar disorder, their first episode is usually a depressive one. This can lead to an incorrect diagnosis of major depressive disorder. It can sometimes take years to get the ...
The general structure of the dendrite is used to classify neurons into multipolar, bipolar and unipolar types. Multipolar neurons are composed of one axon and many dendritic trees. Pyramidal cells are multipolar cortical neurons with pyramid-shaped cell bodies and large dendrites that extend towards the surface of the cortex (apical dendrite ...
The first form is made of one dendrite with multiple short, thin arms that end in circular appendages. The second form has multiple thin dendrites with attached spines, and extensive branching. Amacrine II cells are found most densely in the central retina, but are found in the surrounding retinal areas as well.
Humans have between 10 and 20 million olfactory receptor neurons (ORNs). [3] In vertebrates, ORNs are bipolar neurons with dendrites facing the external surface of the cribriform plate with axons that pass through the cribriform foramina with terminal end at olfactory bulbs.
The forward-facing column is the anterior grey column, the rear-facing one is the posterior grey column and the interlinking one is the lateral grey column. The grey matter on the left and right side is connected by the grey commissure. The grey matter in the spinal cord consists of interneurons, as well as the cell bodies of projection neurons.
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