Medial geniculate nucleus
| Medial geniculate nucleus | |
|---|---|
| File:Medial geniculate nucleus.png Location of the medial geniculate nucleus (red) in the human brain | |
| Details | |
| Part of | Thalamus |
| System | Auditory system |
| Artery | Posterior cerebral artery |
| Vein | Internal cerebral veins |
| Identifiers | |
| Latin | nucleus geniculatus medialis |
| TA98 | Lua error in Module:Wikidata at line 746: attempt to index field 'wikibase' (a nil value). |
| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terms of neuroanatomy [[[d:Lua error in Module:Wikidata at line 865: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]] | |
The medial geniculate nucleus (MGN) is a part of the thalamus and acts as a relay station in the auditory system. It is responsible for relaying auditory information from the inferior colliculus to the auditory cortex.
Anatomy[edit | edit source]
The medial geniculate nucleus is located in the dorsal thalamus and is divided into three main parts: the ventral, dorsal, and medial divisions. Each division has distinct connections and functions within the auditory pathway.
Ventral Division[edit | edit source]
The ventral division of the MGN is the primary relay for auditory information. It receives input from the inferior colliculus and projects to the primary auditory cortex (A1) in the temporal lobe.
Dorsal Division[edit | edit source]
The dorsal division of the MGN is involved in the integration of auditory information with other sensory modalities. It has connections with the association cortex and is thought to play a role in complex sound processing.
Medial Division[edit | edit source]
The medial division of the MGN is associated with the emotional and attentional aspects of sound. It has connections with the amygdala and the cingulate gyrus.
Function[edit | edit source]
The primary function of the medial geniculate nucleus is to relay auditory information from the inferior colliculus to the auditory cortex. It also plays a role in the processing and integration of auditory information, contributing to the perception of sound.
Clinical Significance[edit | edit source]
Damage to the medial geniculate nucleus can result in auditory processing disorders, including difficulties in sound localization and speech perception. It is also implicated in certain types of tinnitus and auditory hallucinations.
Related Pages[edit | edit source]
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Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.Contributors: Prab R. Tumpati, MD
