Hearing - Neural Pathway: Difference between revisions

Revision as of 11:38, 20 April 2011

Introduction

Central auditory neural pathway

This diagram gives an overview of the central neural pathway from the cochlea through the brainstem nuclei to the auditory cortex.

auditory nerve (cochlear nerve, acoustic nerve) part of the vestibulocochlear nerve (8th cranial nerve, CN VIII)
cochlear nuclei (dorsal cochlear nucleus, ventral cochlear nucleus)
superior olivary complex (SOC, superior olive)
lateral lemniscus
inferior colliculus
medial geniculate nucleus
auditory cortex

Categories: Hearing | Outer Ear | Middle Ear | Inner Ear | Balance

Historic Embryology - Hearing
Historic Embryology: 1880 Platypus cochlea \| 1892 Vertebrate Ear \| 1902 Development of Hearing \| 1906 Membranous Labyrinth \| 1910 Auditory Nerve \| 1913 Tectorial Membrane \| 1918 Human Embryo Otic Capsule \| 1918 Cochlea \| 1918 Grays Anatomy \| 1922 Human Auricle \| 1922 Otic Primordia \| 1931 Internal Ear Scalae \| 1932 Otic Capsule 1 \| 1933 Otic Capsule 2 \| 1936 Otic Capsule 3 \| 1933 Endolymphatic Sac \| 1934 Otic Vesicle \| 1934 Membranous Labyrinth \| 1934 External Ear \| 1938 Stapes - 7 to 21 weeks \| 1938 Stapes - Term to Adult \| 1940 Stapes \| 1942 Stapes - Embryo 6.7 to 50 mm \| 1943 Stapes - Fetus 75 to 150 mm \| 1946 Aquaductus cochleae and periotic (perilymphatic) duct \| 1946 aquaeductus cochleae \| 1948 Fissula ante fenestram \| 1948 Stapes - Fetus 160 mm to term \| 1959 Auditory Ossicles \| 1963 Human Otocyst \| Historic Disclaimer

Vestibulocochlear Nerve

Afferent (sensory) cranial nerve brainstem primary terminal nuclei

forms beside otocyst
from wall of otocyst and neural crest cells
bipolar neurons

Vestibular Neurons

outer end of internal acoustic meatus
innervate hair cells in membranous labyrinth
axons project to brain stem and synapse in vestibular nucleus

Cochlear Neurons

cell bodies lie in modiolus
central pillar of cochlear
innervate hair cells of spiral organ
axons project to cochlear nucleus

Auditory Sound Localization Circuits in the Mammalian Brainstem

Schematic drawing of primary auditory sound localization circuits in the mammalian brainstem. For clarity, only the LSO or MSO are shown on each side.^[1]

Except for the auditory nerve, excitatory connections are shown in green and inhibitory connections are shown in red.

AN - auditory nerve
CN - cochlear nucleus
HF - high frequency
LF - low frequency

Links: Hearing - Inner Ear Development

References

↑ <pubmed>19471270</pubmed>

Glossary Links

Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Numbers | Symbols | Term Link

Cite this page: Hill, M.A. (2024, April 16) Embryology Hearing - Neural Pathway. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Hearing_-_Neural_Pathway

What Links Here?

[1] <pubmed>19471270</pubmed>

[1]

@@ Line 30: / Line 30: @@
 * axons project to cochlear nucleus
-==Hearing sound localization circuits brainstem==
+==Auditory Sound Localization Circuits in the Mammalian Brainstem==
 [[File:Hearing sound localization circuits brainstem.jpg]]
+Schematic drawing of primary auditory sound localization circuits in the mammalian brainstem. For clarity, only the LSO or MSO are shown on each side.<ref><pubmed>19471270</pubmed></ref>
+Except for the auditory nerve, excitatory connections are shown in green and inhibitory connections are shown in red.
+* '''AN''' - auditory nerve
+* '''CN''' - cochlear nucleus
+* '''HF''' - high frequency
+* '''LF''' - low frequency
+:'''Links:''' [[Hearing - Inner Ear Development]]
+==References==
+<references/>
 {{Glossary}}
 {{Footer}}