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The accessory olfactory bulb resides on the dorsal-posterior region of the main olfactory bulb and forms a parallel pathway. Destruction of the olfactory bulb results in ipsilateral anosmia, while irritative lesions of the uncus can result in olfactory and gustatory hallucinations. Flow of olfactory information from receptors to glomeruli layer
These ORNs then project their axons to the olfactory bulb. In the olfactory bulb, the ORNs synapse with termination in the glomeruli. [6] Each glomerulus receives input from olfactory receptor neurons expressing only one type of olfactory receptor. The glomerular activation patterns within the olfactory bulb are thought to represent the quality ...
The olfactory system, or sense of smell, is the sensory system used for olfaction (i.e., smelling). Olfaction is one of the special senses directly associated with specific organs. Most mammals and reptiles have a main olfactory system and an accessory olfactory system. The main olfactory system detects airborne substances, while the accessory ...
As in the main olfactory system, the axons of these sensory neurons project from the vomeronasal organ to the accessory olfactory bulb, which in the mouse is located on the dorsal-posterior portion of the main olfactory bulb. Unlike in the main olfactory system, the axons that leave the accessory olfactory bulb do not project to the brain's ...
The olfaction system works to ensure that people can successfully identify an extensive range of odorants and distinguish odors from one another. [4] [5] Odorants interact with the olfactory receptor neurons (ORNs) at the periphery and transmit olfactory information to the central nervous system via axons at the basal surface.
The olfactory system is made up in part of the RMS which stretches from the subventricular zone in the wall of the lateral ventricle, through the basal forebrain, to the olfactory bulb (OB). VONS is the name given to this pathway, and it consists of the subventricular zone, the RMS, the olfactory tract and the olfactory bulb. [12]
Since neuropils have a diverse role in the nervous system, it is difficult to define a certain overarching function for all neuropils. For instance, the olfactory glomeruli function as sorts of way-stations for the information flowing from the olfactory receptor neurons to the olfactory cortex. The inner plexiform layer of the retina is a ...
However, the olfactory sensory neurons to which olfactory bulb neurons are connected are also distributed across the receptor sheet (the olfactory epithelium) depending on their chemical preferences. Locations on the olfactory epithelium and the olfactory bulb are correlated [ 8 ] so, as with other sensory systems, the topographic map in the ...