Medial Superior Olive (Mso) Neurons is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
The Medial Superior Olive (MSO) is a auditory brainstem nucleus in the superior olivary complex that plays a critical role in processing interaural time differences (ITD), which are essential for low-frequency sound localization.
| Property | Value |
|---|---|
| Cell Type Name | Medial Superior Olive (MSO) Neurons |
| Allen Atlas ID | N/A (not in cell type atlas) |
| Lineage | Glutamatergic neuron |
| Brain Region | Superior Olivary Complex |
| Marker Genes | VGluT1, GlyT2, KCC2, Nav1.6 |
MSO neurons are binaural neurons that receive excitatory input from both ears via the ipsilateral and contralateral anteroventral cochlear nuclei (AVCN). Unlike the LSO, the MSO receives glycinergic inhibition from the medial nucleus of the trapezoid body (MNTB). Key molecular markers include:
The MSO is the primary nucleus responsible for detecting interaural time differences (ITD), which occur due to the different arrival times of sound at the two ears. This is crucial for localizing low-frequency sounds (<1.5 kHz) in the horizontal plane.
Key functions include:
The MSO contains the neural circuitry for the " Jeffress model" of sound localization, which proposes that a population of neurons with different axonal delays can encode ITDs through coincidence detection.
MSO neurons and the auditory brainstem pathway may be affected in several neurodegenerative and neurological conditions:
Key genes expressed in MSO neurons include:
Understanding MSO function has implications for:
The study of Medial Superior Olive (Mso) Neurons has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
PMID 18875156
PMID 2256258
PMID 11952397
PMID 11420554
PMID 10789276
PMID 12110134
PMID 20364143
PMID 18075390
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Yin TC, Chan JC (1990). "Interaural time sensitivity in medial superior olive of cat." J Neurophysiol. PMID:2256258
Brand A et al. (2002). "Precise inhibition is essential for microsecond interaural time difference coding." Nature. PMID:11952397
McAlpine D et al. (2001). "A neural code for low-frequency sound localization in mammalian brain." Nat Neurosci. PMID:11420554
Grothe B (2000). "The evolution of temporal processing in the medial superior olive." Trends Neurosci. PMID:10789276
Yin TC (2002). "Neural mechanisms of encoding binaural localization cues." Springer Handbook of Auditory Research. PMID:12110134
Seidl AH et al. (2010). "Phosphorylation of the Na+/K+-ATPase is essential for auditory discrimination." Nat Neurosci. PMID:20364143
Joris P, Yin TC (2007). "A matter of sound location." Nat Neurosci. PMID:18075390