extracampine hallucination

extracampine hallucination
   The term extracampine hallucination is indebted to the Latin words extra (outside) and campaneus (field). It was introduced in or shortly before 1903 by the Swiss psychiatrist Eugen Bleuler (1857-1939) to denote a hallucination that is experienced by the affected individual as being outside the range of ordinary perception. The term extracampine hallucination is usually applied to the visual modality, i.e. to "visual hallucinations experienced at the back of the head or at other locations outside the regular visual field. In his original paper on the subject Bleuler also mentions two cases of "tactile extracampine hallucination, one involving a man who felt spurts of water on the back of his hands, and another involving a woman who claimed that she could feel on her skin the movement of mice crawling inside a wall. As pointed out by the Russian neurologist Johann Susmann Galant (1893-1937?), it is not entirely clear whether these case reports are commensurable with the concept of the extracampine hallucination. After all, both individuals experienced tactile hallucinations within the boundaries of their regular sense of touch. It would have been different if they had claimed, for example, that they could feel jets of water or the crawling of mice inside their brain (which has no tactile sense ofits own). Perhaps Bleuler's inclusion of these examples can be explained by reference to his theoretical supposition that the brain is actively involved in the outward projection of percepts, and that the occurrence of extracampine hallucinations may therefore be regarded as proof of the fallability of the mechanism responsible for this outward projection. Both of Bleuler s examples of the tactile extracampine hallucination would seem to comply with this hypothesis.
   Bleuler, E. (1903). Extracampine Hallucina-tionen. Psychiatrisch-neurologische Wochenschrift, 25, 261-264.
   Galant, S. (1924). Das Halluzinationsproblem und die Algohallucinosis. European Archives of Psychiatry and Clinical Neuroscience, 70, 187-215.
   Sato, Y., Berrios, G. (2003). Extracampine hallucinations. The Lancet, 361, 1479-1480.

Dictionary of Hallucinations. . 2010.

Look at other dictionaries:

  • auditory hallucination —    Also known as acoustic hallucination, aural hallucination, and hallucination of hearing. Auditory hallucinations are the most prevalent type of hallucinations in adults with or without a history of psychiatric illness. It is estimated that the …   Dictionary of Hallucinations

  • visual hallucination —    Also referred to as vision. Both terms are indebted to the Latin noun visio, which means sight. They are used to denote a hallucination of sight. Historically, visual hallucinations have been divided into a multitude of types. Using their… …   Dictionary of Hallucinations

  • Glossary of psychiatry — In this glossary of psychiatric terms, mostly Greek, secondly French and German and some English terms, as used in psychiatric literature, were defined. We have included many other terms with the passage of time and aim to broaden this article to …   Wikipedia

  • synaesthesia —    Also known as synesthesia, synaesthetic hallucination, synaesthetic experience, reflex false perception, secondary sensation, and secondary sense perceptions (German: sekundären Sinnesempfindungen). The term synaesthesia comes from the Greek… …   Dictionary of Hallucinations

  • Gedankenlautwerden —    Also known as Gedankenhören. Both German expressions translate into English as thought echo, thought echoing, thoughts out loud, thought audition, or audible thinking, and into French as écho de la pensée. All of these terms refer to a *… …   Dictionary of Hallucinations

  • transposition of the senses —    A term used during the era of mesmerism to denote a synaesthesia or extracampine hallucination which is interpreted as an instance of veridical perception by means of other than the usual sense organs. This extraordinary mode of perceiving was …   Dictionary of Hallucinations

  • schizophrenia and hallucinations —    The term schizophrenia stems from the Greek words schizein (to split), and phren (nerve, diaphragm, heart). It was introduced in 1908 by the Swiss psychiatrist Paul Eugen Bleuler (18571939) to denote a group of mental disorders displaying… …   Dictionary of Hallucinations