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Charles Bonnet Syndrome
Visual release hallucinations, also known as Charles Bonnet syndrome or CBS, are a type of psychophysical visual disturbance in which a person with partial or severe blindness experiences visual hallucinations. First described by Charles Bonnet in 1760, the term ''Charles Bonnet syndrome'' was first introduced into English-speaking psychiatry in 1982. A related type of hallucination that also occurs with lack of visual input is the closed-eye hallucination. Signs and symptoms People with significant vision loss may have vivid recurrent visual hallucinations (fictive visual percepts). One characteristic of these hallucinations is that they usually are " lilliputian" (hallucinations in which the characters or objects are smaller than normal). Depending on the content, visual hallucinations can be classified as either simple or complex. Simple visual hallucinations are commonly characterized by shapes, photopsias, and grid-like patterns. Complex visual hallucinations consist of high ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Psychiatry
Psychiatry is the specialty (medicine), medical specialty devoted to the diagnosis, prevention, and treatment of mental disorders. These include various maladaptations related to mood, behaviour, cognition, and perceptions. See glossary of psychiatry. Initial psychiatric assessment of a person typically begins with a Medical history, case history and mental status examination. Physical examinations and Psychological testing, psychological tests may be conducted. On occasion, neuroimaging or other Neurophysiology, neurophysiological techniques are used. Mental disorders are often diagnosed in accordance with clinical concepts listed in diagnostic manuals such as the ''International Classification of Diseases'' (ICD), edited and used by the World Health Organization (WHO) and the widely used ''Diagnostic and Statistical Manual of Mental Disorders'' (DSM), published by the American Psychiatric Association (APA). The fifth edition of the DSM (DSM-5) was published in May 2013 which re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boltzmann Machine
A Boltzmann machine (also called Sherrington–Kirkpatrick model with external field or stochastic Ising–Lenz–Little model) is a stochastic spin-glass model with an external field, i.e., a Sherrington–Kirkpatrick model, that is a stochastic Ising model. It is a statistical physics technique applied in the context of cognitive science. It is also classified as a Markov random field. Boltzmann machines are theoretically intriguing because of the locality and Hebbian nature of their training algorithm (being trained by Hebb's rule), and because of their parallelism and the resemblance of their dynamics to simple physical processes. Boltzmann machines with unconstrained connectivity have not been proven useful for practical problems in machine learning or inference, but if the connectivity is properly constrained, the learning can be made efficient enough to be useful for practical problems. They are named after the Boltzmann distribution in statistical mechanics, which i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georges De Morsier
Georges de Morsier (25 February 1894, Paris – 9 January 1982, Geneva) was a Swiss neurologist. He studied natural sciences and medicine in Geneva and subsequently went to Paris as a resident to psychiatrist Gaétan de Clérambault. In 1928 he became '' Privatdozent'' for neurology and psychiatry and in 1941 associate professor at Geneva University, where in 1960, he was appointed professor of neurology. From 1962 onward, he was director of the neurological polyclinic of Geneva University Hospital (HUG). From 1946 to 1949 he was also president of the Swiss Neurological Society. Known for his research of visual hallucinations, he is credited with coining the terms "Charles Bonnet syndrome" (named after Swiss biologist Charles Bonnet) and "Zingerle syndrome" (named after Austrian neurologist Hermann Zingerle) for specific hallucinatory conditions. He also honored his mentor, Gaétan de Clérambault, with a syndrome — it being defined as a hallucinatory state characterized by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Julian De Ajuriaguerra
Julian de Ajuriaguerra (born January 7, 1911 at Bilbao (Spain) and died at Villefranque (Pyrénées-Atlantiques) on March 23, 1993) was a Spanish-French neuropsychiatrist and psychoanalyst of Spanish Basque origin. He is one of the pioneers of "sectoral psychiatry" in France. Biography Brought up in Bilbao in a traditional family, he left for Paris at the age of 16, where he studied Medicine. He becomes a non-resident student in psychiatry at Sainte-Anne Hospital. Because of his status as a foreign student, he was not paid until 1950, so he was compelled to work on night duty until the prohibition of this practice under the Vichy regime. He attended the seminars on Gaetan Gatian de Clérambault and Pierre Janetin particular, and took an interest in the Surrealists. He finished his medical studies both in France and Spain, where the Civil War prevented him from taking his final exams. His thesis, pain in the disease of the central nervous system, concluded in 1936, and was p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean Lhermitte
Jacques Jean Lhermitte () (20 January 1877 – 24 January 1959) was a French neurologist and neuropsychiatrist. Life Lhermitte was born in Mont-Saint-Père, Aisne, son of Léon Augustin Lhermitte, a French realist painter. Following his early education at Saint-Etienne, he studied in Paris and graduated in medicine in 1907. He specialised in neurology and became ''Chef-de-clinique'' (resident) for nervous diseases in 1908, ''Chef de laboratoire'' in 1910, and ''professeur agrégé'' for psychiatry 1922. He later became ''Médecin des Hôpitaux'' at the "Hospice Paul Brousse", head of the foundation " Dejerine", and clinical director at the Salpêtrière Hospital. During World War I, Lhermitte studied spinal injuries and became interested in neuropsychiatry. This led to publications on visual hallucinations of the self. A deeply religious man, he explored the common territory between theology and medicine, and this led him to interesting studies on demonic possession an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cataract
A cataract is a cloudy area in the lens of the eye that leads to a decrease in vision. Cataracts often develop slowly and can affect one or both eyes. Symptoms may include faded colors, blurry or double vision, halos around light, trouble with bright lights, and trouble seeing at night. This may result in trouble driving, reading, or recognizing faces. Poor vision caused by cataracts may also result in an increased risk of falling and depression. Cataracts cause 51% of all cases of blindness and 33% of visual impairment worldwide. Cataracts are most commonly due to aging but may also occur due to trauma or radiation exposure, be present from birth, or occur following eye surgery for other problems. Risk factors include diabetes, longstanding use of corticosteroid medication, smoking tobacco, prolonged exposure to sunlight, and alcohol. The underlying mechanism involves accumulation of clumps of protein or yellow-brown pigment in the lens that reduces transmission of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swiss People
The Swiss people (german: die Schweizer, french: les Suisses, it, gli Svizzeri, rm, ils Svizzers) are the citizens of Switzerland or people of Swiss ancestry. The number of Swiss nationals has grown from 1.7 million in 1815 to 8.7 million in 2020. More than 1.5 million Swiss citizens hold multiple citizenship. About 11% of citizens live abroad (0.8 million, of whom 0.6 million hold multiple citizenship). About 60% of those living abroad reside in the European Union (0.46 million). The largest groups of Swiss descendants and nationals outside Europe are found in the United States, Brazil and Canada. Although the modern state of Switzerland originated in 1848, the period of romantic nationalism, it is not a nation-state, and the Swiss are not a single ethnic group, but rather are a confederacy (') or ' ("nation of will", "nation by choice", that is, a consociational state), a term coined in conscious contrast to "nation" in the conventionally linguistic or ethnic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dementia
Dementia is a disorder which manifests as a set of related symptoms, which usually surfaces when the brain is damaged by injury or disease. The symptoms involve progressive impairments in memory, thinking, and behavior, which negatively affects a person's ability to function and carry out everyday activities. Aside from memory impairment and a disruption in thought patterns, the most common symptoms include emotional problems, difficulties with language, and decreased motivation. The symptoms may be described as occurring in a continuum over several stages. Consciousness is not affected. Dementia ultimately has a significant effect on the individual, caregivers, and on social relationships in general. A diagnosis of dementia requires the observation of a change from a person's usual mental functioning, and a greater cognitive decline than what is caused by normal aging. Several diseases and injuries to the brain, such as a stroke, can give rise to dementia. However, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delirium
Delirium (also known as acute confusional state) is an organically caused decline from a previous baseline of mental function that develops over a short period of time, typically hours to days. Delirium is a syndrome encompassing disturbances in attention, consciousness, and cognition. It may also involve other neurological deficits, such as psychomotor disturbances (e.g. hyperactive, hypoactive, or mixed), impaired sleep-wake cycle, emotional disturbances, and perceptual disturbances (e.g. hallucinations and delusions), although these features are not required for diagnosis. Delirium is caused by an acute organic process, which is a physically identifiable structural, functional, or chemical problem in the brain that may arise from a disease process ''outside'' the brain that nonetheless affects the brain. It may result from an underlying disease process (e.g. infection, hypoxia), side effect of a medication, withdrawal from drugs, over-consumption of alcohol, usage of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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