Is the Olfactory Bulb Functionally Organized in Parallel Columns ?
The olfactory bulb is the first relay of the olfactory pathway. It receives inputs from the olfactory epithelium and sends outputs to the cortex. Contacts between the axons of olfactory receptor cells and the dendrites of the bulbar output cells, mitral and internal tufted cells, occur in characteristic neuropils called glomeruli. Since output cells are known to send their single primary dendrite to the glomerulus which is located in a different laminae, but in register with their somata, the groups of output cells connected to different glomeruli appear as anatomical units and may form functional columns.
KeywordsOlfactory Bulb Output Cell Mitral Cell Distant Cell Glomerular Layer
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