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Ontario Minamata Disease
Ontario Minamata disease is a neurological syndrome caused by severe mercury poisoning. It occurred in the Canadian province of Ontario, in 1970, and severely affected two First Nation communities in Northwestern Ontario following consumption of local fish contaminated with mercury, and one First Nation in Southern Ontario due to illegal disposal of industrial chemical waste. The disease was named after the infamous case of severe mercury poisoning in the fishing community of Minamata, Japan, which became known as Minamata disease because it devastated only the residents of the community. Source of the mercury pollution Grassy Narrows and Whitedog First Nations In 1962, Dryden Chemical Company began operating a chloralkali process plant in Dryden, Ontario, using mercury cells. It produced sodium hydroxide and chlorine that were used in large amounts for bleaching paper during production by the nearby Dryden Pulp and Paper Company. Both companies were subsidiaries of the Briti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neurology
Neurology (from , "string, nerve" and the suffix wikt:-logia, -logia, "study of") is the branch of specialty (medicine) , medicine dealing with the diagnosis and treatment of all categories of conditions and disease involving the nervous system, which comprises the Human brain, brain, the spinal cord and the peripheral nervous system , peripheral nerves. Neurological practice relies heavily on the field of neuroscience, the scientific study of the nervous system, using various techniques of neurotherapy. IEEE Brain (2019). "Neurotherapy: Treating Disorders by Retraining the Brain". ''The Future Neural Therapeutics White Paper''. Retrieved 23.01.2025 from: https://brain.ieee.org/topics/neurotherapy-treating-disorders-by-retraining-the-brain/#:~:text=Neurotherapy%20trains%20a%20patient's%20brain,wave%20activity%20through%20positive%20reinforcement International Neuromodulation Society, Retrieved 23 January 2025 from: https://www.neuromodulation.com/ Val Danilov I (2023). "The O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tremor
A tremor is an involuntary, somewhat rhythmic muscle contraction and relaxation involving neural oscillations, oscillations or twitching movements of one or more body parts. It is the most common of all involuntary movements and can affect the hands, arms, eyes, face, head, vocal folds, trunk, and legs. Most tremors occur in the hands. In some people, a tremor is a symptom of another neurological disorder. Types Tremor is most commonly classified by clinical features and cause or origin. Some of the better-known forms of tremor, with their symptoms, include the following: * Cerebellar tremor (also known as intention tremor) is a slow, broad tremor of the extremities that occurs at the end of a purposeful movement, such as trying to press a button or touching a finger to the tip of one's nose. In classic cerebellar tremor, a lesion on one side of the brain produces a tremor in that same side of the body that worsens with directed movement. Cerebellar damage can also produce a "win ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eye Movement (sensory)
Eye movement includes the voluntary or involuntary movement of the eyes. Eye movements are used by a number of organisms (e.g. primates, rodents, flies, birds, fish, cats, crabs, octopus) to fixate, inspect and track visual objects of interests. A special type of eye movement, rapid eye movement, occurs during REM sleep. The eyes are the visual organs of the human body, and move using a system of six muscles. The retina, a specialised type of tissue containing photoreceptors, senses light. These specialised cells convert light into electrochemical signals. These signals travel along the optic nerve fibers to the brain, where they are interpreted as vision in the visual cortex. Primates and many other vertebrates use three types of voluntary eye movement to track objects of interest: smooth pursuit, vergence shifts and saccades. These types of movements appear to be initiated by a small cortical region in the brain's frontal lobe. This is corroborated by removal of the fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hearing Impairment
Hearing loss is a partial or total inability to Hearing, hear. Hearing loss may be present at birth or acquired at any time afterwards. Hearing loss may occur in one or both ears. In children, hearing problems can affect the ability to Language acquisition, acquire spoken language, and in adults it can create difficulties with social interaction and at work. Hearing loss can be temporary or permanent. Presbycusis, Hearing loss related to age usually affects both ears and is due to cochlear hair cell loss. In some people, particularly older people, hearing loss can result in loneliness. Hearing loss may be caused by a number of factors, including: genetics, ageing, Noise-induced hearing loss, exposure to noise, some infections, birth complications, trauma to the ear, and certain medications or toxins. A common condition that results in hearing loss is chronic ear infections. Certain infections during pregnancy, such as cytomegalovirus, syphilis and rubella, may also cause he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Visual Field
The visual field is "that portion of space in which objects are visible at the same moment during steady fixation of the gaze in one direction"; in ophthalmology and neurology the emphasis is mostly on the structure inside the visual field and it is then considered “the field of functional capacity obtained and recorded by means of perimetry”.Strasburger, Hans; Pöppel, Ernst (2002). Visual Field. In G. Adelman & B.H. Smith (Eds): ''Encyclopedia of Neuroscience''; 3rd edition, on CD-ROM. Elsevier Science B.V., Amsterdam, New York. However, the visual field can also be understood as a predominantly ''perceptual'' concept and its definition then becomes that of the "spatial array of visual sensations available to observation in introspectionist psychological experiments" (for example in van Doorn et al., 2013). The corresponding concept for optical instruments and image sensors is the field of view (FOV). In humans and animals, the FOV refers to the area visible when eye mov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parts Per Billion
In science and engineering, the parts-per notation is a set of pseudo-units to describe the small values of miscellaneous dimensionless quantities, e.g. mole fraction or mass fraction. Since these fractions are quantity-per-quantity measures, they are pure numbers with no associated units of measurement. Commonly used are * parts-per-million - ppm, * parts-per-billion - ppb, * parts-per-trillion - ppt, * parts-per-quadrillion - ppq, This notation is not part of the International System of Units - SI system and its meaning is ambiguous. Applications Parts-per notation is often used describing dilute solutions in chemistry, for instance, the relative abundance of dissolved minerals or pollutants in water. The quantity "1 ppm" can be used for a mass fraction if a water-borne pollutant is present at one-millionth of a gram per gram of sample solution. When working with aqueous solutions, it is common to assume that the density of water is 1.00 g/mL. Therefor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kumamoto University
, abbreviated to ''Kumadai'' (熊大), is a Japanese national university located in Kumamoto, Kumamoto Prefecture in the Kyushu region of Japan. It was established on May 31, 1949, at which time the following institutions were subsumed into it; Kumamoto Teachers College (established in 1874), Kumamoto Pharmaceutical College (1885), the Fifth High School (1887), Kumamoto Medical College (1896), and Kumamoto Technical College (1906). Currently, the university has seven faculties and eight graduate schools with a total of around 10,000 Japanese students and 500 international students from Asia, North America, South America, Europe, Africa, and Oceania. It is involved in the Top Global University Project, selected by the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT), which aims to improve education in Japanese universities in order to increase global recognition and compete with the rest of the world. History The university was chartered by the Sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wabaseemoong Independent Nations
Wabaseemoong Independent Nations or more fully as the Wabaseemoong Independent Nations of One Man Lake, Swan Lake and Whitedog, is an Ojibway First Nation band government who reside 120 km northwest of Kenora, Ontario and east of the Ontario-Manitoba border of northwestern Ontario, Canada. As of December 2018, the First Nation had a population of 2,000 registered people, of which their on-Reserve population was 1200 registered members and approximately 100 non-Band members. History Prior to hydroelectric development in the 1950s, the First Nation was composed of three separate communities of One Man Lake, Swan Lake and Whitedog. The three communities were then amalgamated into a unified Band called the Islington Band of Saulteaux when the hydroelectric development flooding debased all their membership and significant portions of their Islington Traditional Land Use Area were made inaccessible. In the 1960s and 1970s, the First Nation was severely affected by acute mer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asubpeeschoseewagong First Nation
Asubpeeschoseewagong First Nation (also known as Grassy Narrows First Nation or the ''Asabiinyashkosiwagong Nitam-Anishinaabeg'' in the Ojibwe language) is an Ojibwe First Nations band government who inhabit northern Kenora in Ontario, Canada. Their landbase is the English River 21 Indian Reserve. It has a registered population of 1,595 as of October 2019, of which the on-reserve population was 971. As of October 2023, the community had a registered population of 1,608. They are a signatory to Treaty 3. Overview of environmental disaster Generations of Grassy Lakes continue to suffer from the physical, social, and economic costs of the discharge of approximately ten tons of mercury into the Wabigoon River between 1962 and 1970 by the Dryden pulp and paper mill, upstream of Grassy Narrows, poisoning the water and the fish—the staple food of the Grassy Narrows First Nations. The community was under a long-term drinking water advisory from about 2013 through October 202 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Market
A black market is a Secrecy, clandestine Market (economics), market or series of transactions that has some aspect of illegality, or is not compliant with an institutional set of rules. If the rule defines the set of goods and services whose production and distribution are prohibited or restricted by law, non-compliance with the rule constitutes a black-market trade since the transaction itself is illegal. Such transactions include the illegal drug trade, prostitution (where prohibited), illegal currency transactions, and human trafficking. Participants try to hide their illegal behavior from the government or regulatory authority. Cash is the preferred medium of exchange in illegal transactions, since cash transactions are less easily traced. Common motives for operating in black markets are to trade contraband, avoid taxes and regulations, or evade price controls or rationing. Typically, the totality of such activity is referred to with the definite article, e.g., "''the' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aamjiwnaang First Nation
The Aamjiwnaang First Nation (formerly Chippewas of Sarnia First Nation; ) is an Anishinaabe (Ojibwe) First Nations Band located on reserve land by the St. Clair River in Ontario, Canada, three miles south of the southern tip of Lake Huron. The reserve is located across from the United States border from Port Huron, Michigan, and is a result of treaties that were negotiated with the Crown in the 1820s. There are approximately 2,600 band members with about 900 living on the reserve. Their heritage language is Ojibwe. The word ''Aamjiwnaang'' (am-JIN-nun) means "meeting place by the rapid water", which describes the surrounding communities. Environmental issues The Aamjiwnaang community has expressed concern regarding its proximity to petrochemical, polymer, and chemical plants in the area, as birth rates of their people have been documented by the American journal ''Environmental Health Perspectives'' as deviating from the normal ratio of close to 50% boys, 50% girls. The ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
