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Joseph Delboeuf
Joseph Rémi Léopold Delbœuf (30 September 1831, Liège, Belgium – 14 August 1896, Bonn, Germany) was a Belgian experimental psychologist who studied visual illusions including his work on the Delboeuf illusion. He studied and taught philosophy, mathematics, and psychophysics. He published works across a diverse range of subjects including the curative effects of hypnotism. Early life and education Joseph Delboeuf was born in the French speaking town of Liège, Belgium. His father, a pewter craftsman, died early in Delboeuf’s life. He studied at the University of Liège, earning his PhD in philosophy in 1855, followed by physics and mathematics in 1858. He received a scholarship from the University of Bonn and continued his postdoctoral research under philosopher and mathematician Friedrich Ueberweg. In 1860, he began teaching Greek at l’Ecole Normale des Humanités de Liège. In 1863, he was given the post of Maitre de Conférences, which he only held for a few months b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gustav Fechner
Gustav Theodor Fechner (; ; 19 April 1801 – 18 November 1887) was a German physicist, philosopher, and experimental psychologist. A pioneer in experimental psychology and founder of psychophysics (techniques for measuring the mind), he inspired many 20th-century scientists and philosophers. He is also credited with demonstrating the non-linear relationship between psychological sensation and the physical intensity of a stimulus via the formula: S = K \ln I, which became known as the Weber–Fechner law. Early life and scientific career Fechner was born at Groß Särchen, near Muskau, in Lower Lusatia, where his father, a maternal uncle, and his paternal grandfather were pastors. His mother, Johanna Dorothea Fechner (b. 1774), née Fischer, also came from a religious family. Despite these religious influences, Fechner became an atheist in later life. Fechner's father, Samuel Traugott Fischer Fechner (1765-1806) was free-thinking in many ways, for example by having his childre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weber–Fechner Law
The Weber–Fechner laws are two related hypotheses in the field of psychophysics, known as Weber's law and Fechner's law. Both laws relate to human perception, more specifically the relation between the actual change in a physical stimulus and the perceived change. This includes stimuli to all senses: vision, hearing, taste, touch, and smell. Weber states that, "the minimum increase of stimulus which will produce a perceptible increase of sensation is proportional to the pre-existent stimulus," while Fechner's law is an inference from Weber's law (with additional assumptions) which states that the intensity of our sensation increases as the logarithm of an increase in energy rather than as rapidly as the increase. History and formulation of the laws Both Weber's law and Fechner's law were formulated by Gustav Theodor Fechner (1801–1887). They were first published in 1860 in the work ''Elemente der Psychophysik'' (''Elements of Psychophysics''). This publication was th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bertrand Russell
Bertrand Arthur William Russell, 3rd Earl Russell, (18 May 1872 – 2 February 1970) was a British mathematician, philosopher, logician, and public intellectual. He had a considerable influence on mathematics, logic, set theory, linguistics, artificial intelligence, cognitive science, computer science and various areas of analytic philosophy, especially philosophy of mathematics, philosophy of language, epistemology, and metaphysics.Stanford Encyclopedia of Philosophy"Bertrand Russell" 1 May 2003. He was one of the early 20th century's most prominent logicians, and a founder of analytic philosophy, along with his predecessor Gottlob Frege, his friend and colleague G. E. Moore and his student and protégé Ludwig Wittgenstein. Russell with Moore led the British "revolt against idealism". Together with his former teacher A. N. Whitehead, Russell wrote ''Principia Mathematica'', a milestone in the development of classical logic, and a major attempt to reduce the whole ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marie Wittman
Marie "Blanche" Wittman (often spelled Wittmann; April 15, 18591913) was a French woman known as one of the hysteria patients of Jean-Martin Charcot. She was institutionalized in La Salpêtrière in 1877, and was treated by Charcot until his death in 1893. She later became a radiology assistant at the hospital, which resulted in amputations of her arms due to radiation poisoning. Charcot's techniques were controversial; commentators have disagreed as to whether Wittman suffered from a physical condition like epileptic seizures, suffered from mass hysteria resulting from conditions at La Salpêtrière, or was merely feigning symptoms. She is depicted in ''A Clinical Lesson at the Salpêtrière'' (1887) and was the subject of a 2004 Per Olov Enquist novel. Biography Early life Wittman was born in Paris on April 15, 1859. Her early life is known only from information she provided to Paul-Marie-Léon Regnard and Désiré-Magloire Bourneville in 1877. Wittman's father was a Swiss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pierre Janet
Pierre Marie Félix Janet (; 30 May 1859 – 24 February 1947) was a pioneering French psychologist, physician, philosopher, and psychotherapist in the field of dissociation and traumatic memory. He is ranked alongside William James and Wilhelm Wundt as one of the founding fathers of psychology. Biography Janet studied under Jean-Martin Charcot at the Psychological Laboratory in the Pitié-Salpêtrière Hospital in Paris. He first published the results of his research in his philosophy thesis in 1889 and in his medical thesis, ''L'état mental des hystériques'', in 1892. He earned a degree in medicine the following year in 1893. In 1898, Janet was appointed lecturer in psychology at the Sorbonne, and in 1902 he attained the chair of experimental and comparative psychology at the Collège de France, a position he held until 1936. He was a member of the Institut de France from 1913, and was a central figure in French psychology in the first half of the 20th century. Theo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double Consciousness
Double consciousness is the internal conflict experienced by subordinated or colonized groups in an oppressive society. The term and the idea were first published in W. E. B. Du Bois's autoethnographic work, ''The Souls of Black Folk'' in 1903, in which he described the African American experience of double consciousness, including his own.Du Bois, W. E. B. The Souls of Black Folk. New York, Avenel, NJ: Gramercy Books; 1994 Originally, double consciousness was specifically the psychological challenge African Americans experienced of "always looking at one's self through the eyes" of a racist white society and "measuring oneself by the means of a nation that looked back in contempt". The term also referred to Du Bois's experiences of reconciling his African heritage with an upbringing in a European-dominated society. The idea of double consciousness is important because it illuminates the experiences of black people living in post-slavery America, and also because it sets a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suggestion
Suggestion is the psychological process by which a person guides their own or another person's desired thoughts, feelings, and behaviors by presenting stimuli that may elicit them as reflexes instead of relying on conscious effort. Nineteenth-century writers on psychology such as William James used the words "suggest" and "suggestion" in the context of a particular idea which was said to ''suggest'' another when it brought that other idea to mind. Early scientific studies of hypnosis by Clark Leonard Hull and others extended the meaning of these words in a special and technical sense (Hull, 1933). The original neuropsychological theory of hypnotic suggestion was based upon the ideomotor reflex response that William B. Carpenter declared, in 1852, was the principle through which James Braid's hypnotic phenomena were produced. Émile Coué Émile Coué (1857–1926) was a significant pioneer in the development of an understanding of the application of therapeutic suggestion; ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hippolyte Bernheim
Hippolyte Bernheim (17 April 1840, in Mulhouse – 2 February 1919, in Paris) was a French physician and neurologist. He is chiefly known for his theory of suggestibility in relation to hypnotism. Life Born into a Jewish family, Bernheim received his education in his native town and at the University of Strasbourg, where he was graduated as doctor of medicine in 1867. The same year he became a lecturer at the university and established himself as a physician in the city. When, in 1871, after the Franco-Prussian war, Strasbourg passed to Germany, Bernheim moved to Nancy (where he met and later collaborated with Dr. Ambroise-Auguste Liébeault), in the university of which town he became clinical professor. The Nancy School When the medical faculty took up hypnotism, about 1880, Bernheim was very enthusiastic, and soon became one of the leaders of the investigation. He became a well-known authority in this new field of medicine. Albert Moll (1862–1939), an active promoter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pain
Pain is a distressing feeling often caused by intense or damaging stimuli. The International Association for the Study of Pain defines pain as "an unpleasant sensory and emotional experience associated with, or resembling that associated with, actual or potential tissue damage." In medical diagnosis, pain is regarded as a symptom of an underlying condition. Pain motivates the individual to withdraw from damaging situations, to protect a damaged body part while it heals, and to avoid similar experiences in the future. Most pain resolves once the noxious stimulus is removed and the body has healed, but it may persist despite removal of the stimulus and apparent healing of the body. Sometimes pain arises in the absence of any detectable stimulus, damage or disease. Pain is the most common reason for physician consultation in most developed countries. It is a major symptom in many medical conditions, and can interfere with a person's quality of life and general functioning. Simple ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Symmetry
Symmetry (from grc, συμμετρία "agreement in dimensions, due proportion, arrangement") in everyday language refers to a sense of harmonious and beautiful proportion and balance. In mathematics, "symmetry" has a more precise definition, and is usually used to refer to an object that is invariant under some transformations; including translation, reflection, rotation or scaling. Although these two meanings of "symmetry" can sometimes be told apart, they are intricately related, and hence are discussed together in this article. Mathematical symmetry may be observed with respect to the passage of time; as a spatial relationship; through geometric transformations; through other kinds of functional transformations; and as an aspect of abstract objects, including theoretic models, language, and music. This article describes symmetry from three perspectives: in mathematics, including geometry, the most familiar type of symmetry for many people; in science and nature ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traditional Medicine
Traditional medicine (also known as indigenous medicine or folk medicine) comprises medical aspects of traditional knowledge that developed over generations within the folk beliefs of various societies, including indigenous peoples, before the era of modern medicine. The World Health Organization (WHO) defines traditional medicine as "the sum total of the knowledge, skills, and practices based on the theories, beliefs, and experiences indigenous to different cultures, whether explicable or not, used in the maintenance of health as well as in the prevention, diagnosis, improvement or treatment of physical and mental illness". Traditional medicine is often contrasted with scientific medicine. In some Asian and African countries, up to 80% of the population relies on traditional medicine for their primary health care needs. When adopted outside its traditional culture, traditional medicine is often considered a form of alternative medicine. Practices known as traditional medicines ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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