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Auditory processing disorder (APD), rarely known as King-Kopetzky syndrome, 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 ...
Symptoms of this disorder usually begin appearing in adolescence-early adulthood. [3] People with this disorder have may auditory symptoms before and during seizures. For example: [4] [5] Buzzing; Ringing; Humming; Voices; Music; Changes in the intensity/volume of sound; Changes in the senses; Inability to understand speech (receptive aphasia)
In one case study, each of the three sound types (music, environmental sounds, speech) was also shown to recover independently (Mendez and Geehan, 1988-case 2 [22]). It is yet unclear whether general auditory agnosia is a combination of milder auditory disorders, or whether the source of this disorder is at an earlier auditory processing stage.
Revised Token Test (RTT): assess receptive language and auditory comprehension; focuses on patient's ability to follow directions. [27] Informal assessments, which aid in the diagnosis of patients with suspected aphasia, include: [28] Conversational speech and language sample [28] Family interview [28] Case history or medical chart review [28]
It is often due to diffuse axonal injury and demyelination. There may be peripheral and central symptoms, such as reduced auditory understanding in a complex listening environment, central auditory processing disorder and auditory hallucination. [23] Hyperacusis, that is the hypersensitivity to environmental noise can also develop. [24]
Cortical deafness is a rare form of sensorineural hearing loss caused by damage to the primary auditory cortex.Cortical deafness is an auditory disorder where the patient is unable to hear sounds but has no apparent damage to the structures of the ear (see auditory system).
A case history (usually a written form, with questionnaire) can provide valuable information about the context of the hearing loss, and indicate what kind of diagnostic procedures to employ. Case history will include such items as: major concern; birth and pregnancy information; medical history; development history; family history; workplace ...
Based on clinical testing of subjects with auditory neuropathy, the disruption in the stream of sound information has been localized to one or more of three probable locations: the inner hair cells of the cochlea, the synapse between the inner hair cells and the auditory nerve, or a lesion of the ascending auditory nerve itself.