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It is yet unclear whether auditory agnosia (also called general auditory agnosia) is a combination of milder disorders, such auditory verbal agnosia (pure word deafness), non-verbal auditory agnosia, amusia and word-meaning deafness, or a mild case of the more severe disorder, cerebral deafness. Typically, a person with auditory agnosia would ...
Loss of hearing caused by changes in the inner ear is called sensorineural deafness. Hearing loss that results from changes in the middle ear is called conductive hearing loss. The middle ear contains three tiny bones that help transfer sound from the eardrum to the inner ear. Some forms of nonsyndromic deafness involve changes in both the ...
Individuals with this disorder lose the ability to understand language, repeat words, and write from dictation. Some patients with AVA describe hearing spoken language as meaningless noise, often as though the person speaking was doing so in a foreign language. [1] However, spontaneous speaking, reading, and writing are preserved.
Vestibular schwannoma, erroneously known as Acoustic neuromas, and other types of brain tumours can cause hearing loss by infringement of the tumour on the vestibulocochlear nerve; Viral diseases of the ear can cause sensorineural hearing loss usually as the consequence of labyrinthitis. The person may be generally unwell at the time.
Auditory processing disorder (APD) is a neurodevelopmental disorder affecting the way the brain processes sounds. [2] Individuals with APD usually have normal structure and function of the ear, but cannot process the information they hear in the same way as others do, which leads to difficulties in recognizing and interpreting sounds, especially the sounds composing speech.
Auditory neuropathy (AN) is a hearing disorder in which the outer hair cells of the cochlea are present and functional, but sound information is not transmitted sufficiently by the auditory nerve to the brain. The cause may be several dysfunctions of the inner hair cells of the cochlea or spiral ganglion neuron levels. [1]
AIED is generally caused by either antibodies or immune cells that cause damage to the inner ear. There are several theories that propose a cause of AIED: Bystander damage – Physical damage to the inner ear may lead to cytokine release that signals for an immune response. This may be a component of the "attack/remission cycle" of AIED. [9]
It is responsible for receiving signals from the medial geniculate nucleus. Within the primary auditory cortex, the auditosensory cortex extends posteromedially over the gyrus. [ 2 ] Brodmann area 42 is an auditory core region bordered medially by Brodmann area 41 and laterally by Brodmann area 22. [ 2 ]