Midbrain structure involved in the auditory pathway
Inferior colliculus
Inferior colliculus (red dot) in human brain, sagittal section.
Transverse section of mid-brain at level of inferior colliculi
Details
Part of
Tectum
System
Auditory system
Identifiers
Latin
colliculus inferior
MeSH
D007245
NeuroNames
476
NeuroLex ID
birnlex_806
TA98
A14.1.06.014
TA2
5916
FMA
62404
Anatomical terms of neuroanatomy
[edit on Wikidata]
The inferior colliculus (IC) (Latin for lower hill) is the principal midbrain nucleus of the auditory pathway and receives input from several peripheral brainstem nuclei in the auditory pathway, as well as inputs from the auditory cortex.[1] The inferior colliculus has three subdivisions: the central nucleus, a dorsal cortex by which it is surrounded, and an external cortex which is located laterally.[2] Its bimodal neurons are implicated in auditory-somatosensory interaction, receiving projections from somatosensory nuclei. This multisensory integration may underlie a filtering of self-effected sounds from vocalization, chewing, or respiration activities.[3]
The inferior colliculi are part of the tectum of the midbrain, and together with the superior colliculi form the corpora quadrigemina. An inferior colliculus lies caudal/inferior to the ipsilateral superior colliculus, rostral/superior to the superior cerebellar peduncle[4] and the trochlear nerve, and at the base of the projection of the medial geniculate nucleus and the lateral geniculate nucleus.[citation needed]
^Shore, S. E.: Auditory/Somatosensory Interactions. In: Squire (Ed.): Encyclopedia of Neuroscience, Academic Press, 2009, p. 693 f.
^Shore, S. E.: Auditory/Somatosensory Interactions. In: Squire (Ed.): Encyclopedia of Neuroscience, Academic Press, 2009, p. 694.
^Shore, S. E.: Auditory/Somatosensory Interactions. In: Squire (Ed.): Encyclopedia of Neuroscience, Academic Press, 2009, pp. 691–695.
^Sinnatamby, Chummy S. (2011). Last's Anatomy (12th ed.). p. 476. ISBN 978-0-7295-3752-0.
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