- Also known as somatosensory hallucination. Both terms are indebted to the Greek noun soma, which means body. They are used to denote a hallucination that mimics feelings from inside the body, such as sensations in the belly or the limbs. Conceptually as well as clinically, somatic hallucinations are difficult to distinguish from *tactile hallucinations, bodily feelings arising from somatic conditions, somatic delusions, and *body schema illusions. A noteworthy example in this respect is inexplicable pain: a textbook example of a feeling that cannot be explained away by calling it a hallucination. Functional magnetic resonance imaging (fMRI) studies indicate that somatic hallucinations are associated primarily with heightened activity in the primary somatosensory cortex, the posterior parietal cortex, and the thalamus. During the era of classic psychiatry, some of the phenomena now referred to as somatic hallucinations were known as * coenesthetic hallucinations or * distortions of vital sensations. Another related notion is the * somaesthetic hallucination. The differential diagnosis of somatic hallucinations includes *haptic hallucinations, *body schema illusions, * paraesthesia, * alloesthaesia, * allodynia, *hyperalgesia, * hyperpathia, * hallucinated pain, referred pain, and pain due to an unknown somatic condition. The term somatic hallucination is used in opposition to the term *tactile hallucination (or haptic hallucination). Together, somatic and tactile hallucinations are referred to in the 1982 Manual for the Assessment and Documentation of Psychopathology (AMDP) as *bodily hallucinations.ReferencesBerrios, G.E. (1985). Hallucinosis.In: Neu-robehavioural disorders. Edited by Frederiks, J.A.M. Amsterdam: Elsevier Science Publications.Guy, W., Ban, T.A., eds. (1982). The AMDP-system: Manual for the assessment and documentation of Psychopathology. Berlin: Springer.Shergill, S.S., Cameron, L.A., Brammer, M.J., Williams, S.C., Murray, R.M., McGuire, P.K. (2001). Modality specific correlates of auditory and somatic hallucinations. Journal of Neurology, Neurosurgery and Psychiatry, 71, 688-690.
Dictionary of Hallucinations. J.D. Blom. 2010.
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coenesthetic hallucination — Also written as cenesthetic hallucination. Both terms translate loosely to hallucination of auto somatic awareness . They are used to denote a * somatic hallucination consisting of a peculiar visceral or other bodily sensation that cannot be… … Dictionary of Hallucinations
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sexual hallucination — Also known as erotic hallucination. The term sexual hallucination is used in a general sense to denote a type of hallucination that is sexually charged, such as a * visual hallucination depicting an alluring man or woman, a * verbal auditory… … Dictionary of Hallucinations
bodily hallucination — Also known as body sensation hallucination. Both terms are used interchangeably as umbrella terms for the notions of * tactile hallucination and * somatic hallucination. In other words, both terms refer to a hallucination experienced in the… … Dictionary of Hallucinations
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ganglionic hallucination — The term ganglionic hallucination is indebted to the Greek noun gagglion (i.e. ganglion), which refers to a collection of nerve cells acting as a centre of neurotransmission. It was introduced by the 19th century French dream researcher… … Dictionary of Hallucinations
somatosensory hallucination — see somatic hallucination … Dictionary of Hallucinations