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People with Schizophrenia are known to experience auditory hallucinations and it is thought that these hallucinations are a result of over activation of the muscles in the larynx.[1] Using an electromyography to record muscle movement, individuals experiencing hallucinations showed greater muscle activation before these hallucinations occurred.[1] Unfortunately, this muscle activation is not easily detected which means the muscle movement must be measured on a wider range.[1] Though a wider range is needed to detect the muscle movement, it is still considered as subvocalization. Much more research is needed to link subvocalization with hallucination but many schizophrenics report ‘hearing voices’ (as hallucinations) coming from their throat.[2] This small fact could be a clue to finding if there is a true link between subvocalization and hallucinations, but it is very difficult to see this connection because not many patients experience hallucinations[1]


  1. 1.0 1.1 1.2 1.3 Green, M. F., & Kinsbourne, M. (1990). Subvocal activity and auditory hallucinations: Clues for behavioral treatments?. Schizophrenia Bulletin, 16(4), 617-625.
  2. Smith, J. D., Wilson, M., & Reisberg, D. (1995). The role of subvocalization in auditory imagery. Neuropsychologia, 33(11), 1433-1454. doi:10.1016/0028-3932(95)00074-D

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