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Related Concept Videos

Hearing01:31

Hearing

When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.
Auditory Pathway01:15

Auditory Pathway

Auditory pathways constitute the complex neural circuits responsible for transmitting and interpreting auditory information from the peripheral auditory system to the brain. Sound waves are initially captured by the outer ear, funneled through the ear canal, and reach the tympanic membrane (eardrum). These vibrations are transmitted via the middle ear's ossicles to the inner ear's cochlea.
When viewed cross-sectionally, the cochlea reveals the scala vestibuli and scala tympani flanking the...
Auditory Perception01:17

Auditory Perception

The auditory system is essential for sound perception, utilizing various critical structures. When sound waves enter the outer ear, they travel through the ear canal and cause the eardrum to vibrate. These vibrations are then transmitted to the middle ear, where three tiny bones – the malleus, incus, and stapes – amplify the sound. This amplification is crucial, as it ensures that the sound vibrations are strong enough to be conveyed to the inner ear. These vibrations then reach the cochlea, a...
Anatomy of the Ear01:16

Anatomy of the Ear

Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
Respiratory System Abnormal Finding II: Palpation and Auscultation01:31

Respiratory System Abnormal Finding II: Palpation and Auscultation

In assessing respiratory abnormalities, palpation and auscultation are critical tools for detecting and interpreting various pathophysiological changes. These techniques provide insight into underlying disorders by evaluating tactile sensations and sounds produced by the respiratory system.
Palpation Findings
During a respiratory assessment, palpation can reveal several vital abnormalities:
The Cochlea01:13

The Cochlea

The cochlea is a coiled structure in the inner ear that contains hair cells—the sensory receptors of the auditory system. Sound waves are transmitted to the cochlea by small bones attached to the eardrum called the ossicles, which vibrate the oval window that leads to the inner ear. This causes fluid in the chambers of the cochlea to move, vibrating the basilar membrane.

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Related Experiment Video

Updated: May 24, 2026

Cryosectioning and Immunostaining Mouse Inner Ear Tissue: From Embryonic to Adult Stages
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Auditory dysfunction.

Antonio Baldi1, Serena Tenaglia, Sebastiano D'Anna

  • 1UOC Neurologia-Stroke Unit, Ospedale San Tommaso dei Battuti, Portogruaro, Italy. baldianto@libero.it

Frontiers of Neurology and Neuroscience
|March 2, 2012
PubMed
Summary
This summary is machine-generated.

Vertebrobasilar artery occlusion can cause hearing impairment due to ischemic lesions in auditory pathways. Arteries like AICA and IAA supply these crucial structures.

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Area of Science:

  • Neurology
  • Otolaryngology
  • Vascular Medicine

Background:

  • Hearing impairment is an uncommon but potential complication of vertebrobasilar artery occlusion.
  • Pathogenesis involves ischemic lesions affecting auditory pathways in the brainstem and inner ear structures.

Purpose of the Study:

  • To elucidate the relationship between vertebrobasilar artery occlusion and hearing impairment.
  • To identify the specific auditory pathways and vascular supply involved.

Main Methods:

  • Review of clinical cases and neuroimaging studies of patients with vertebrobasilar artery occlusion.
  • Analysis of auditory pathway anatomy and vascular supply from relevant literature.

Main Results:

  • Ischemic lesions in the pons and midbrain, cochlear nucleus, cochlear nerve, or cochlea can lead to hearing loss.
  • The anterior inferior cerebellar artery (AICA) and internal auditory artery (IAA) are critical for supplying audiovestibular structures.

Conclusions:

  • Vertebrobasilar artery occlusion poses a risk for hearing impairment through central and peripheral auditory pathway ischemia.
  • Understanding the vascular supply (AICA, IAA) is crucial for diagnosing and managing hearing deficits in these patients.