Human brain seen from below. Vesalius' Fabrica, 1543. Olfactory bulbs and olfactory tracts outlined in red
Sagittal section of human head.
Details
System
Olfactory
Identifiers
Latin
bulbus olfactorius
MeSH
D009830
NeuroNames
279
NeuroLex ID
birnlex_1137
TA98
A14.1.09.429
TA2
5538
FMA
77624
Anatomical terms of neuroanatomy
[edit on Wikidata]
Coronal image of mouse main olfactory bulb cell nuclei. Blue – Glomerular layer; Red – External Plexiform and Mitral cell layer; Green – Internal Plexiform and Granule cell layer. Top of image is dorsal aspect, right of image is lateral aspect. Scale, ventral to dorsal, is approximately 2mm.
The olfactory bulb (Latin: bulbus olfactorius) is a neural structure of the vertebrate forebrain involved in olfaction, the sense of smell. It sends olfactory information to be further processed in the amygdala, the orbitofrontal cortex (OFC) and the hippocampus where it plays a role in emotion, memory and learning. The bulb is divided into two distinct structures: the main olfactory bulb and the accessory olfactory bulb. The main olfactory bulb connects to the amygdala via the piriform cortex of the primary olfactory cortex and directly projects from the main olfactory bulb to specific amygdala areas. 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
The olfactorybulb (Latin: bulbus olfactorius) is a neural structure of the vertebrate forebrain involved in olfaction, the sense of smell. It sends olfactory...
a signal through the olfactory system. Glomeruli aggregate signals from these receptors and transmit them to the olfactorybulb, where the sensory input...
the olfactorybulb and synapse there; from the bulbs (one on each side) the olfactory information is transmitted into the brain via the olfactory tract...
the glomeruli of the olfactorybulb. Analogous to neural glial cells, the supporting cells are non-neural cells in the olfactory epithelium that are located...
through the cribriform foramina with terminal end at olfactorybulbs. The ORNs are located in the olfactory epithelium in the nasal cavity. The cell bodies...
the air and congregate at the olfactory nerve before passing axons to the dendrites of mitral cells in the olfactorybulb. Sensory receptors in the mouth...
bundle of afferent nerve fibers from the mitral and tufted cells of the olfactorybulb that connects to several target regions in the brain, including the...
subcortical structures, including the hippocampus, basal ganglia, and olfactorybulb. In the human brain, the cerebrum is the uppermost region of the central...
rare circumstances, surgical procedures to remove the olfactory nerves or bulbs. Other olfactory disorders such as hyposmia and anosmia have been found...
dendrites that signaled to dendrites. While studying the mammalian olfactorybulb, they found that there were active dendrites that couple and send signals...
Mitral cells are neurons that are part of the olfactory system. They are located in the olfactorybulb in the mammalian central nervous system. They receive...
hippocampus, the superficial layer of the dorsal cochlear nucleus, the olfactorybulb, and the cerebral cortex. Cerebellar granule cells account for the majority...
nasal cavities. It supports the olfactorybulb, and is perforated by olfactory foramina for the passage of the olfactory nerves to the roof of the nasal...
positioned over the dorsal section of the olfactorybulb. Longer photostimulation of mitral cells in the olfactorybulb led to observations of longer lasting...
which travel from the VNO to the accessory olfactorybulb (AOB), which is also known as the vomeronasal bulb. These sensory receptors are located on the...
brain via the olfactory fila. Olfactory receptor neuron axons project through the cribriform plate to the olfactorybulb. The olfactorybulb is a structure...
filtering unit of the kidney Glomerulus (olfaction), a structure in the olfactorybulb Glomerulus (cerebellum), the contact between specific cells in the cerebellum...
the olfactory cortex and receives direct input from the olfactorybulb, it has not been shown to play a role in processing of odors. The olfactory tubercle...
transport inside the olfactory nerve cells to the olfactorybulb or by faster transfer along the perineural space surrounding the olfactory nerve cells into...
olfactory epithelium, the amount of olfactory precursor cells decreased by half. This in turn caused the mice to develop a lower amount of olfactory cells...
from the medulla. The olfactory nerve (I) and optic nerve (II) emerge separately. The olfactory nerves emerge from the olfactorybulbs on either side of the...
of the striatum to the olfactorybulb through the rostral migratory stream (RMS). The migrating neuroblasts in the olfactorybulb become interneurons that...
strong influence on other olfactory areas like the olfactorybulb and the piriform cortex. The AON is found behind the olfactorybulb and in front of the piriform...
pollution exposure and olfactory dysfunction and pathology in the olfactorybulb. The young adults demonstrated olfactorybulb endothelial hyperplasia...
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