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Structural Plasticity
Neuroplasticity, also known as neural plasticity or just plasticity, is the ability of neural networks in the brain to change through growth and reorganization. Neuroplasticity refers to the brain's ability to reorganize and rewire its neural connections, enabling it to adapt and function in ways that differ from its prior state. This process can occur in response to learning new skills, experiencing environmental changes, recovering from injuries, or adapting to sensory or cognitive deficits. Such adaptability highlights the dynamic and ever-evolving nature of the brain, even into adulthood. These changes range from individual neuron pathways making new connections, to systematic adjustments like cortical remapping or neural oscillation. Other forms of neuroplasticity include homologous area adaptation, cross modal reassignment, map expansion, and compensatory masquerade. Examples of neuroplasticity include circuit and network changes that result from learning a new ability, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neural Network
A neural network is a group of interconnected units called neurons that send signals to one another. Neurons can be either biological cells or signal pathways. While individual neurons are simple, many of them together in a network can perform complex tasks. There are two main types of neural networks. *In neuroscience, a '' biological neural network'' is a physical structure found in brains and complex nervous systems – a population of nerve cells connected by synapses. *In machine learning, an '' artificial neural network'' is a mathematical model used to approximate nonlinear functions. Artificial neural networks are used to solve artificial intelligence problems. In biology In the context of biology, a neural network is a population of biological neurons chemically connected to each other by synapses. A given neuron can be connected to hundreds of thousands of synapses. Each neuron sends and receives electrochemical signals called action potentials to its conne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michele Vincenzo Malacarne
Michele () is an Italian male given name, akin to the English male name Michael. Michele (usually pronounced ), is also an English female given name that is derived from the French Michèle. It is a variant spelling of the more common (and identically pronounced) name Michelle. Michele can also be a surname. The names are ultimately derived from the Hebrew מִיכָאֵל, through the Greek Μιχαήλ and the Latin Michael meaning " Who is like God?". Men with the given name Michele *Michele (singer) (born 1944), Italian pop singer * Michele Abruzzo (1904–1996), Italian actor *Michele Alboreto (1956–2001), Italian Grand Prix racing driver *Michele Amari (1806–1889), Italian politician and historian *Michele Andreolo (1912–1981), Italian footballer *Michele Bianchi (1883–1930), Italian journalist and revolutionary *Michele Bravi (born 1994), Italian singer *Michele Cachia (1760–1839), Maltese architect and military engineer *Michele Canini (born 1985), Italian fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organization Of Behavior
''Organization of Behavior'' is a 1949 book by the psychologist Donald O. Hebb. One of the main takeaways was that it proposed a theory about learning based on conjunctures on neural networks A neural network is a group of interconnected units called neurons that send signals to one another. Neurons can be either Cell (biology), biological cells or signal pathways. While individual neurons are simple, many of them together in a netwo ... and synapses being able to strengthen or weaken over time. Reception The author Richard Webster identifies ''Organization of Behavior'' as the most influential outline of Hebb's postulate. According to Webster, the hypothesis has classic status within science and is supported by recent research. References Bibliography ;Books * 1949 non-fiction books Books by Donald O. Hebb English-language non-fiction books Neuroscience books {{Nonfiction-book-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artificial Neuron
An artificial neuron is a mathematical function conceived as a model of a biological neuron in a neural network. The artificial neuron is the elementary unit of an ''artificial neural network''. The design of the artificial neuron was inspired by biological neural circuitry. Its inputs are analogous to excitatory postsynaptic potentials and inhibitory postsynaptic potentials at neural dendrites, or . Its weights are analogous to synaptic weights, and its output is analogous to a neuron's action potential which is transmitted along its axon. Usually, each input is separately weighted, and the sum is often added to a term known as a ''bias'' (loosely corresponding to the threshold potential), before being passed through a nonlinear function known as an activation function. Depending on the task, these functions could have a sigmoid shape (e.g. for binary classification), but they may also take the form of other nonlinear functions, piecewise linear functions, or step fun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walter Pitts
Walter Harry Pitts, Jr. (April 23, 1923 – May 14, 1969) was an American logician who worked in the field of computational neuroscience.Smalheiser, Neil R"Walter Pitts", ''Perspectives in Biology and Medicine'', Volume 43, Number 2, Winter 2000, pp. 217–226, The Johns Hopkins University Press He proposed landmark theoretical formulations of neural activity and generative processes that influenced diverse fields such as cognitive sciences and psychology, philosophy, neurosciences, computer science, artificial neural networks, cybernetics and artificial intelligence, together with what has come to be known as the generative sciences. He is best remembered for having written along with Warren Sturgis McCulloch, a seminal paper in scientific history, titled '' A Logical Calculus of Ideas Immanent in Nervous Activity'' (1943). This paper proposed the first mathematical model of a neural network. The unit of this model, a simple formalized neuron, is still the standard of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Warren Sturgis McCulloch
Warren Sturgis McCulloch (November 16, 1898 – September 24, 1969) was an American neurophysiologist and cybernetician known for his work on the foundation for certain brain theories and his contribution to the cybernetics movement.Ken Aizawa (2004),McCulloch, Warren Sturgis. In: Dictionary of the Philosophy of Mind. Retrieved May 17, 2008. Along with Walter Pitts, McCulloch created computational models based on mathematical algorithms called threshold logic which split the inquiry into two distinct approaches, one approach focused on biological processes in the brain and the other focused on the application of neural networks to artificial intelligence. Biography Warren Sturgis McCulloch was born in Orange, New Jersey, in 1898. His brother was a chemical engineer and Warren was originally planning to join the Christian ministry. As a teenager he was associated with the theologians Henry Sloane Coffin, Harry Emerson Fosdick, Herman Karl Wilhelm Kumm and Julian F. Hecker ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nicolas Rashevsky
Nicolas Rashevsky (November 9, 1899 – January 16, 1972) was an American theoretical physicist who was one of the pioneers of mathematical biology, and is also considered the father of mathematical biophysics and theoretical biology. Robert Rosen ''Essays on Life'' (2004) Evelyn Fox Keller ''Making Sense of Life'' pp. 82-89 Academic career He studied theoretical physics at the St. Vladimir Imperial University of Kyiv. He left Ukraine after the October Revolution, emigrating first to Turkey, then to Poland, France, and finally to the US in 1924. In USA he worked at first for the Westinghouse Research Labs in Pittsburgh where he focused on the theoretical physics modeling of the cell division and the mathematics of cell fission. He was awarded a Rockefeller Fellowship in 1934 and went to the University of Chicago to take up the appointment of assistant professor in the department of physiology. In 1938, inspired by reading On Growth and Form (1917) by D'Arcy Wentworth Tho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhesus Monkey
The rhesus macaque (''Macaca mulatta''), colloquially rhesus monkey, is a species of Old World monkey. There are between six and nine recognised subspecies split between two groups, the Chinese-derived and the Indian-derived. Generally brown or grey in colour, it is in length with a tail and weighs . It is native to South Asia, South, Central Asia, Central, and Southeast Asia and has the widest geographic range of all non-human primates, occupying a great diversity of altitudes and habitats. The rhesus macaque is diurnality, diurnal, arboreal, and terrestrial. It is mostly herbivorous, feeding mainly on fruit, but also eating seeds, roots, buds, Bark (botany), bark, and cereals. Rhesus macaques living in cities also eat human food and trash. They are gregarious, with troops comprising 20–200 individuals. The social groups are matrilineal. Individuals communicate with a variety of facial expressions, vocalisations, body postures, and gestures. As a result of the rhesus macaq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Lashley
Karl Spencer Lashley (June 7, 1890 – August 7, 1958) was an American psychologist and behaviorist remembered for his contributions to the study of learning and memory. A ''Review of General Psychology'' survey, published in 2002, ranked Lashley as the 61st most cited psychologist of the 20th century. Early life and education Lashley was born on June 7, 1890, in the town of Davis, West Virginia. He was the only child of Charles and Maggie Lashley. He grew up in a middle-class family with a reasonably comfortable life. Lashley's father held various local political positions. His mother was a stay-at-home parent, and had a vast collection of books in the home. She brought in women from the community, whom she would teach various subjects. This is no doubt what gave Lashley his love of learning. Lashley has always held his family in high regard. He has said that his father was a kind man. Lashley's mother was a strong advocate of schooling, and she encouraged Lashley intellectuall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Max Bielschowsky
Max Israel Bielschowsky (20 February 1869 – 15 August 1940) was a German neuropathologist born in Breslau. After receiving his medical doctorate from the University of Munich in 1893, he worked with Ludwig Edinger (1855–1918) at the Senckenberg Museum, Senckenberg Pathology Institute in Frankfurt-am-Main. At Senckenberg he learned histology, histological staining techniques from Carl Weigert (1845–1904). From 1896 to 1904 he worked in Emanuel Mendel's (1839–1907) psychiatric laboratory in Berlin. In 1904 he joined Oskar Vogt (1870–1959) at the neurobiology, neurobiological laboratory at the University of Berlin, where he remained until 1933. Later in his career he worked at the psychiatric clinic at the University of Utrecht, and at the Cajal Institute in Madrid. He emigrated to the UK, where he died on 15 August 1940 in the Greater London area at 71 years of age. His oldest son, Franz David Bielschowsky, also emigrated to Sheffield, UK and subsequently to Dunedin, N ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Walther Spielmeyer
Walther Spielmeyer (23 April 1879 – 6 February 1935) was a German neuropathologist who was a native of Dessau. Biography He studied medicine at the University of Halle as a student of Eduard Hitzig (1838-1907). At Halle he was influenced by the work of psychiatrists Karl Heilbronner (1869-1914), Gustav Aschaffenburg (1866-1944) and pathologist Karl Joseph Eberth (1835-1926). In 1906 he relocated to Freiburg as an assistant to Alfred Hoche (1865-1943). At the suggestion of Emil Kraepelin (1856-1926), he succeeded Alois Alzheimer (1864-1915) as director of the ''Anatomisches Laboratorium der Psychiatrischen und Nervenklinik'' in Munich. At Munich he worked with Franz Nissl (1860-1919) and Felix Plaut (1877-1940). In 1928 the Rockefeller Foundation financed the Kaiser Wilhelm Institute with Spielmeyer as director of the ''Hirnpathologisches Institut''. He died of pulmonary tuberculosis on February 6, 1935. Research Spielmeyer is remembered for his research of peripheral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Nervous System
The central nervous system (CNS) is the part of the nervous system consisting primarily of the brain, spinal cord and retina. The CNS is so named because the brain integrates the received information and coordinates and influences the activity of all parts of the bodies of bilateria, bilaterally symmetric and triploblastic animals—that is, all multicellular animals except sponges and Coelenterata, diploblasts. It is a structure composed of nervous tissue positioned along the Anatomical_terms_of_location#Rostral,_cranial,_and_caudal, rostral (nose end) to caudal (tail end) axis of the body and may have an enlarged section at the rostral end which is a brain. Only arthropods, cephalopods and vertebrates have a true brain, though precursor structures exist in onychophorans, gastropods and lancelets. The rest of this article exclusively discusses the vertebrate central nervous system, which is radically distinct from all other animals. Overview In vertebrates, the brain and spinal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
