Charpentier's illusion

   Also known as size-weight illusion and *Demoor's sign. The eponym Charpentier's illusion refers to the French ophthalmologist and physiologist Augustin Charpentier (18521916), who has been credited with being the first to describe the phenomenon, complete with appropriate experimental evidence, in 1891. The eponym Demoor's sign refers to the Belgian physician Jean Demoor (1867-1941), who employed the concomitant phenomenon as a diagnostic test in children with developmental disorders. The eponym Demoor's sign was coined in or shortly before 1903 by the Swiss neurologist and child psychologist Edouard Claparède (1873-1940). The three terms above are used interchangeably to denote the illusory difference in weight experienced when two containers of the same weight, but of different size, are lifted up simultaneously. In the ensuing illusion, the smaller container is experienced as heavier than the bigger one. Charpentier sought to explain the size-weight illusion by referring to a neu-rophysiological model of weight perception, and a psychological model pertaining to the "feeling of mental effort". Even today, the debate continues as to which of these two factors should be granted primacy. Charpentier's illusion tends to be classified as a *physiological illusion. Sometimes the eponym Charpentier's illusion is also used as a synonym for * autokinetic effect.
   Charpentier, A. (1891). Analyse expérimentale de quelques éléments de la sensation de poids. Archive de Physiologie normale et pathologique, 3, 122-135.
   Claparède, E. (1903). L'illusion de poids chez les anormaux et le "signe de Demoor". Archives de Psychologie, 2, 22-32.
   Demoor, J. (1898). Notes médico-pédagogiques: à propos d'une illusion musculaire. Journal Médical de Bruxelles,18Jan.
   Murray, D.J., Ellis, R.R., Bandomir, C.A., Ross, H.E. (1999). Charpentier (1891) on the size-weight illusion. Perception & Psychophysics, 61, 1681-1685.

Dictionary of Hallucinations. . 2010.

Look at other dictionaries:

  • size-weight illusion —    see Charpentier s illusion …   Dictionary of Hallucinations

  • Size-weight illusion — The size weight illusion, also known as the Charpentier illusion, is named after the French physician Augustin Charpentier.[1] because he was the first to demonstrate the illusion experimentally [2] [3] The illusion occurs when a person… …   Wikipedia

  • Madame Charpentier et ses enfants — Auguste Renoir Pour les articles homonymes, voir Renoir. Auguste Renoir Nom de naissance Pierre Auguste Renoir …   Wikipédia en Français

  • La Grande illusion — Pour les articles homonymes, voir La Grande Illusion (homonymie). La Grande Illusion Réalisation Jean Renoir Acteurs principaux Jean Gabin : Maréchal Pierre Fresnay : de Boëldieu Erich von Stroheim&# …   Wikipédia en Français

  • La Grande Illusion — Pour les articles homonymes, voir La Grande Illusion (homonymie). La Grande Illusion Données clés Réalisation Jean Renoir Scénario Charles Spaak, Jean Renoir A …   Wikipédia en Français

  • Félix Charpentier — est un sculpteur français né à Bollène le 10 janvier 1858, mort à Paris le 7 décembre 1924. Sommaire …   Wikipédia en Français

  • Augustin Charpentier — In 1891 the first experiment providing evidence of the size weight illusion was done by Augustin Charpentier, a French physician. He carried out a various number of procedures comparing what people thought was the heaviness of lifted weights. He… …   Wikipedia

  • autokinetic effect —    Also referred to as autokinetic sensation, autokinetic illusion, autokinetic phenomenon, autokinesis, and Charpentier s illusion. The term autokinetic effect is indebted to the Greek words automatos (automatically, driven by a power of its… …   Dictionary of Hallucinations

  • Demoor's sign —    see Charpentier s illusion …   Dictionary of Hallucinations

  • Alice au pays des merveilles (film, 1951) — Pour les articles homonymes, voir Alice au pays des merveilles (homonymie). Alice au pays des merveilles Données clés Titre original Alice in Wonderland Réalisation Clyde Geronimi Wilfred Jackson …   Wikipédia en Français

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.