- 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 Joseph Antonius Maria Frederiks to denote a disorder of the body scheme in which either a part of the body, or the body as a whole, is experienced as disproportionally large. The phenomenon itself was described as early as 1905 by the French neurologist Pierre Bonnier (1861-1918), in the context of what he called " aschematia. When the whole body is experienced as enlarged, the expressions "whole body macrosomatognosia and total body macroso-matognosia are used. When one or more parts of the body are experienced as enlarged, the term " partial macrosomatognosia is used. Frederiks lists three general characteristics of macroso-matognosia, i.e.1) its paroxysmal character,2) its occurrence in both halves of the body, and3) its occurrence in the unclouded mind. Macro-somatognosia 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. Etiologically, it is associated with a variety of conditions including epileptic seizures, migraine, " delirium, " delirium tremens, alcohol withdrawal, toxoplasmosis or typhoid infections, mesencephalic lesions, and intoxication with " hallucinogens such as LSD and mescaline. Macrosomatognosia may also occur as a transient phenomenon in " hypnagogic states. It is generally classified as a "body schema illusion or as a type of somatognosia. The term macrosomatognosia is used in opposition to the term " microsomatognosia.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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partial macrosomatognosia — A term used to denote a type of *macro somatognosia in which one or more body parts are experienced as disproportionally large. The term is used in opposition to * whole body macrosomatognosia and * total body macrosomatognosia. References… … Dictionary of Hallucinations
whole body macrosomatognosia — Also referred to as total body macrosomatognosia. Both terms are used to denote a type of * macrosomatognosia in which the whole body is experienced as disproportionally large. They are used in opposition to the term *partial macroso… … Dictionary of Hallucinations
total body macrosomatognosia — see whole body macrosomatognosia … Dictionary of Hallucinations
microsomatognosia — 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… … 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
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
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
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
toluene-induced hallucination — Toluene is also known as methylbenzene and phenylmethane. The name toluene refers to tolu balsam, an aromatic extract from the tropical tree Myroxylon balsamum. The name tolu balsam, in turn, is named after Santiago de Tolü, a town in Colombia … Dictionary of Hallucinations