- The term microsomatognosia comes from the Greek words mikros (small), soma (body), and gnosis (insight). It translates roughly as 'experiencing the body as smaller'. The term was introduced in or shortly before 1963 by the Dutch neurologist Joseph Antonius Maria Frederiks to denote a disorder of the body scheme in which the body, in part or in whole, is experienced as disproportionally small. When the whole body is involved, the expressions * whole body microso-matognosia and total body microsomatognosia may be used. When the condition is restricted to one or more parts of the body, the term *partial microsomatognosia may be used. The phenomenon itself was described as early as 1905 by the French neurologist Pierre Bonnier (1861-1918), in the context of *aschematia. Frederiks lists three general characteristics of micro-somatognosia, i.e. (1) its paroxysmal character, (2) its occurrence in both halves of the body, and (3) its occurrence in the unclouded mind. Microsomatognosia may present as an isolated symptom, as part of an *aura, as part of a cluster of symptoms called the *Alice in Wonderland syndrome, or as part of the cluster of symptoms designated as * schizophrenia. Etiolog-ically, it is associated with a variety ofconditions, including epileptic seizures, migraine, * delirium, *delirium tremens, alcohol withdrawal, toxo-plasmosis or typhoid infections, mesencephalic lesions, and intoxication with * hallucinogens such as LSD and mescaline. Microsomatognosia may also occur as a transient phenomenon during * hypnagogic states. The condition is generally classified as a *body schema illusion or as a type of somatognosia. The term microsomatognosia is used in opposition to *macrosomatognosia.ReferencesBonnier, P. (1905). L'aschématie. Revue Neurologique, 13, 605-609.Frederiks, J.A.M. (1963). Macrosomatognosia and microsomatognosia. Psychiatry, Neurology and Neurosurgery, 66, 531-536.Podoll, K., Robinson, D. (2000). Macrosomatognosia and microsomatognosia in migraine art. Acta Neurologica Scandinavica, 101, 413-416.
Dictionary of Hallucinations. J.D. Blom. 2010.
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whole body microsomatognosia — Also referred to as total body microsomatognosia. Both terms are used to denote a type of * microsomatognosia in which the whole body is experienced as disproportionally small. They are used in opposition to the term *partial microso… … Dictionary of Hallucinations
partial microsomatognosia — A term used to denote a type of *micro somatognosia in which one or more body parts are experienced as disproportionally small. The term is used in opposition to *whole body microsomatognosia and * total body microso matognosia. References… … Dictionary of Hallucinations
total body microsomatognosia — see whole body microsomatognosia … Dictionary of Hallucinations
macrosomatognosia — The term macrosomatognosia comes from the Greek words makros (large), soma (body), and gnosis (insight). It translates roughly to experiencing the body as larger . The term was introduced in or shortly before 1963 by the Dutch neurologist… … Dictionary of Hallucinations
body schema illusion — Also known as body schema disturbance, *somato éidolie, *disorder of corporeal awareness, illusion of corporeal transformation, and illusion of corporeal displacement. All six terms are used to denote an illusory change in the size, relation,… … Dictionary of Hallucinations
Sleep paralysis — is paralysis associated with sleep that may occur in healthy persons or may be associated with narcolepsy, cataplexy, and hypnagogic hallucinations. The pathophysiology of this condition is closely related to the normal hypotonia that occurs… … Wikipedia
Alice in Wonderland syndrome — Also known as Alice in Wonderland effect, Wonderland syndrome, and syndrome of Alice in Wonderland. The term syndrome of Alice in Wonderland was introduced in or shortly before 1955 by the British psychiatrist John Todd (1914 1987) to denote a … Dictionary of Hallucinations
blank hallucination — The term blank hallucination was introduced in or shortly before 1961 by the German American psychoanalyst Max M. Stern (18951982) to denote a collection of simple hallucinatory phenomena such as the sense that one is floating in space,… … Dictionary of Hallucinations
body dysmorphic disorder (BDD) and hallucinations — The term body dysmorphic disorder was introduced in 1994 in the American Psychiatric Association s Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM IV) to denote a disorder characterized by an imagined defect in… … Dictionary of Hallucinations
inhalants and hallucinations — The term inhalant comes from the Latin verb inhalare, which means to breathe into. It is used to denote a group of volatile substances used for industrial purposes, and widely misused for their hallucinogenic and other psychoactive properties … Dictionary of Hallucinations