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Hypoacusis is defined as impairment in hearing or deafness. It was the most common of the five etiologies in the case studies reviewed by Evers and Ellgers. [3] According to Sanchez et al. 2011, there have been suggestions that pontine lesions could alter the central auditory system's function, causing hypoacusis and musical hallucinations. [8] [9]
Cortical deafness is an auditory disorder where the patient is unable to hear sounds but has no apparent damage to the ... In a case study by Sasidharan et al. (2020 ...
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.
Some people with this disorder report that there are specific sounds which can trigger their seizures. But most people do not have a known trigger. [4] People with ADPEAF may have different kinds of seizures, but partial seizures are often the most common. [6] The frequency of seizures can vary greatly from person-to-person. [5]
Musical hallucinations (MH) can be described as perceptions of musical sounds in the absence of external auditory stimuli. Although imagined sounds can be non-musical; such as bells, whistles and sirens, case studies indicate that music "[takes] precedence over all other auditory hallucinations" (Sacks, 2006).
Musical ear syndrome (MES) is a condition seen in people who have hearing loss and subsequently develop auditory hallucinations. "MES" has also been associated with musical hallucinations, which is a complex form of auditory hallucinations where an individual may experience music or sounds that are heard without an external source. [1]
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 ...
Auditory verbal agnosia can also occur as a result of traumatic brain injury. In one case, a man fell and developed auditory verbal agnosia. This can be challenging to diagnose because he had fluent speech and could understand written language. However, he was unable to follow oral commands or repeat words.