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Musical hallucinations (also known as auditory hallucinations, auditory Charles Bonnet Syndrome, and Oliver Sacks' syndrome [1]) describes a neurological disorder in which the patient will hallucinate songs, tunes, instruments and melodies. These hallucinations are not correlated with psychotic illness. [2]
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]
In people with psychosis, the premier cause of auditory hallucinations is schizophrenia, and these are known as auditory verbal hallucinations (AVHs). [16] In schizophrenia, people show a consistent increase in activity of the thalamic and striatal subcortical nuclei , hypothalamus , and paralimbic regions; confirmed by PET and fMRI scans.
Auditory hallucinations are often depicted as malicious voices that possess knowledge about the person's private and shameful thoughts or actions, which the individual would prefer to keep hidden. In these situations, thought broadcasting arises as an inability to conceal one's own thoughts. [29]
Hearing Voices Networks, closely related to the Hearing Voices Movement, are peer-focused national organizations for people who hear voices (commonly referred to as auditory hallucinations) and supporting family members, activists and mental health practitioners.
Selective auditory attention is a normal sensory process of the brain, and there can be abnormalities related to this process in people with sensory processing disorders such as autism, attention deficit hyperactive disorder, [30] post traumatic stress disorder, [31] schizophrenia, [30] selective mutism, [32] and in stand-alone auditory ...
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).
However, normal subjects also report auditory hallucinations to a surprising extent. For example, Bentall and Slade [22] found that as many as 15.4% of a population of 150 male students were prepared to endorse the statement "In the past I have had the experience of hearing a person's voice and then found that no one was there". They add: