Acoustic radiation

Auditory radiations
Human auditory pathway. Acoustic radiation is shown as red arrow at center-top.
Details
Identifiers
Latin	radiatio acustica
NeuroNames	ancil-393
TA	A14.1.08.662 A14.1.09.545
FMA	62413
*Anatomical terms of neuroanatomy* [edit on Wikidata]

The acoustic radiations or auditory radiations are structures found in the brain, in the ventral cochlear pathway, a part of the auditory system.^[1]^[2] Acoustic radiation arising in the medial geniculate nucleus and end in primary auditory cortex (transverse temporal gyri). Lesions to the auditory radiations could be a cause of cortical deafness.^[3]

References

↑ "Audition" (HTM). Neuropsychology/Behavioural Neuroscience. Archived from the original on 2 November 2007. Retrieved 2007-11-27.
↑ "Thalamus" (PDF). Archived from the original on 15 December 2007. Retrieved 2007-11-27.
↑ "Central Auditory Disorders" (HTML). iVertigo.net. Retrieved 2007-11-27.

Wikimedia Commons has media related to Acoustic radiation.

Anatomy of the diencephalon of the human brain

Epithalamus

Surface	Pineal gland Habenula Habenular trigone Habenular commissure

Grey matter	Pretectal area Habenular nuclei Subcommissural organ

Thalamus

Surface	Stria medullaris of thalamus Thalamic reticular nucleus Taenia thalami

Grey matter/ nuclei	paired: AN Ventral VA/VL VP/VPM/VPL Lateral LD LP Pulvinar nuclei Metathalamus MG LG P cell M cell K cell midline: MD Intralaminar Centromedian Midline nuclear group Interthalamic adhesion

White matter	Mammillothalamic fasciculus Pallidothalamic tracts Ansa lenticularis Lenticular fasciculus Thalamic fasciculus PCML Medial lemniscus Trigeminal lemniscus Spinothalamic tract Lateral lemniscus Dentatothalamic tract Acoustic radiation Optic radiation Subthalamic fasciculus Anterior trigeminothalamic tract Medullary laminae

Hypothalamus

Surface

Grey matter

Autonomic zones	Anterior (parasympathetic/heat loss) Posterior (sympathetic/heat conservation)

Endocrine	posterior pituitary: Paraventricular Magnocellular neurosecretory cell Parvocellular neurosecretory cell Supraoptic oxytocin/vasopressin other: Arcuate (dopamine/GHRH) Preoptic (GnRH) Suprachiasmatic (melatonin)

Emotion	Lateral Ventromedial Dorsomedial

White matter

afferent
- Medial forebrain bundle
- Retinohypothalamic tract
efferent

Pituitary

Posterior is diencephalon, but anterior is glandular

Subthalamus

Physiology of balance and hearing

Hearing

General	Auditory system Bone conduction Otoacoustic emission Tullio phenomenon

Pathway	inner ear: Hair cells → Spiral ganglion → Cochlear nerve ^VIII → pons: Cochlear nucleus (Anterior, Dorsal) → Trapezoid body → Superior olivary nuclei → midbrain: Lateral lemniscus → Inferior colliculi → thalamus: Medial geniculate nuclei → cerebrum: Acoustic radiation → Primary auditory cortex

Balance

General	Vestibular system

Pathway	inner ear: Vestibular nerve ^VIII → pons: Vestibular nuclei (Medial vestibular nucleus, Lateral vestibular nucleus) cerebellum: Flocculonodular lobe spinal cord: Vestibulospinal tract (Medial vestibulospinal tract, Lateral vestibulospinal tract) thalamus: Ventral posterolateral nucleus cerebrum: Vestibular cortex Vestibulo-oculomotor fibers

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