Rodent Hearing Test
Rodent Hearing Test - Related Videos
01:31
Hearing
0 Views •
2019
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. Sound waves are collected by the external ear and amplified as they travel through the ear canal. When sounds reach the junction between the outer and middle ear, they vibrate the tympanic membrane—the eardrum. The resulting mechanical energy causes the attached ossicles—a...
07:52
An Automated System for Sound Localization Testing in Hearing-Impaired Listeners
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2026
This protocol introduces an automated sound localization testing system with precise loudspeaker placement and integrated response analysis, validated in normal-hearing participants and participants with single-sided deafness. It provides a reproducible method to assess spatial hearing and supports functional classification using the International Classification of Functioning, Disability and Health (ICF) framework.
03:49
Enhanced Cochlear Coverage and Hearing Preservation in High-Frequency Hearing Loss via Electric Acoustic Stimulation with Longer Electrode
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Cited by 1 •
2024
Electric acoustic stimulation (EAS) with longer electrodes can offer broader cochlear coverage and various types of maps in cases of high-frequency hearing loss. Combining less invasive surgery, flexible lateral-wall electrodes, and steroid administration permits deeper insertion with little or no surgical trauma, resulting in good preservation of hearing.
09:44
Neuro-rehabilitation Approach for Sudden Sensorineural Hearing Loss
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Cited by 10 •
2016
This article reports the development of a neuro-rehabilitation approach, "constraint-induced sound therapy (CIST)" for sudden sensorineural hearing loss. The aim of CIST is to prevent maladaptive cortical reorganization by using an enriched acoustic environment. CIST represents a safe, easy, inexpensive, and effective approach to treat sudden sensorineural hearing loss.
08:30
Neonatal Murine Cochlear Explant Technique as an In Vitro Screening Tool in Hearing Research
0 Views •
Cited by 25 •
2017
The goal of this protocol is to demonstrate the preparation, culture, treatment, and immunostaining of neonatal murine cochlear explants. The technique can be utilized as an in vitro screening tool in hearing research.
FAQs
Behavioral assays infer auditory sensitivity from sound-evoked actions, whereas physiological assays measure activity within parts of the hearing system. Auditory brainstem responses provide information about neural signaling, while otoacoustic emissions indicate cochlear function. Comparing these readouts can help distinguish changes expressed as altered behavior from changes detected directly in auditory physiology.
An auditory brainstem response records neural activity evoked by controlled sounds and therefore provides information about signal transmission through auditory pathways at the brainstem level. It complements behavioral measurements by reducing reliance on an observable action. In neuroscience experiments, this distinction helps investigators examine auditory pathway function alongside overall sound-evoked behavior.
Otoacoustic emissions are useful because they provide information about cochlear function rather than relying solely on an animal’s behavioral response. This physiological perspective can reveal auditory changes that may not be captured by sound-evoked behavior. When interpreted with other measurements, the results help separate cochlear effects from broader changes in neural signaling or sensory processing.
Using more than one assay provides complementary evidence. A behavioral test shows how the animal responds to sound, while auditory brainstem responses and otoacoustic emissions assess neural signaling and cochlear function, respectively. Divergent results can therefore indicate whether an observed change primarily concerns auditory physiology or the behavioral expression of sensory processing.
A typical workflow selects an appropriate behavioral or physiological assay, presents controlled sounds to the mouse or rat, and records the resulting response. The recorded outcome may be sound-evoked behavior, an auditory brainstem response, or otoacoustic emissions. Investigators then use the assay-specific result to evaluate auditory sensitivity or hearing-system function.
Researchers apply these tests to investigate auditory pathways, sensory processing, development, aging, and hearing loss. The assays also support studies of genetic or environmental effects and ototoxicity, meaning harmful effects on hearing. Because they can provide behavioral or physiological outcomes, they are relevant across both basic neuroscience and investigations of auditory dysfunction.
Rodent hearing tests can measure auditory outcomes after pharmacological, surgical, or regenerative interventions. Investigators select behavioral or physiological readouts that match the aspect of hearing being studied, then assess changes in sound-evoked behavior, neural signaling, or cochlear function. These results provide evidence for whether an intervention affects hearing-system performance.