Posted: July 8th, 2012 | Author: M.Aaron Silverman | Filed under: Cankler Science News, STANDOUT | Tags: Aphasia, Centre for Neurogenic Communication Disorders Research, Impaired Language Abilities, Parkinsons Disease, Physiology department at Hospital Henri Mondor, Professor Bruce Murdoch, Stroke, TMS, Transcranial Magnetc Stimulation, University of Queensland, Wiki | Comments Off on Magnetic Pulse Brain Stimulation Helps Stroke Patients Regain Speech
Australian scientists are confident magnenetic pulse brain stimulation research will help long-term stroke and Parkinson’s disease patients speak again. The approach, being pioneered by Professor Bruce Murdoch, Director of the Centre for Neurogenic Communication Disorders Research from the University of Queensland, uses magnetic pulses to stimulate damaged areas of the brain.
The technique, known as Transcranial Magnetc Stimulation – TMS – was previously used to treat depression and pain management. It’s the first time the therapy has been looked at for language or communication loss due to neurological damage.
The treatment is literally an on off switch for the brain, switching on brain function in Parkinson and off in stroke victims suffering from aphasia. TMS is a non-invasive method to cause depolarization or hyperpolarization in the neurons of the brain. TMS uses electromagnetic induction to induce weak electric currents using a rapidly changing magnetic field, causing activity in specific or general parts of the brain with minimal discomfort.
Aphasia in stroke victims is a condition where suffers have impaired language abilities, the range of the disorder includes memory difficulties for words, all the way through to a complete inability to speak
This isn’t a first for TMS use in Parkinsons or stroke, in 2009 Dr Jean-Pascal Le faucheur of Physiology department at Hospital Henri Mondor in France successfully used the therapy with pain management and Parkinsons :: Read the full article »»»»
Posted: January 12th, 2012 | Author: Verity Penfold | Filed under: Wiki | Tags: definition, proto-science, protoscience, Wiki | Comments Off on Wiki! PROTOSCIENCE
Protoscience or Proto-science: In the philosophy of science, a protoscience is a new science trying to establish its legitimacy. Protoscience is distinguished from pseudoscience by its standard practices of good science, such as a willingness to be disproven by new evidence, or to be replaced by a more predictive theory.
Compare fringe science, which is considered highly speculative or even strongly refuted. Some protosciences go on to become an accepted part of mainstream science.
All sciences would have qualified as protosciences before the Age of Enlightenment, since the scientific method still hadn’t been developed, and there was no structured way to prove legitimacy.
A standard example is alchemy, which from the 18th century became chemistry, or pre-modern astrology which from the 17th century became astronomy :: Read the full article »»»»
Posted: August 15th, 2011 | Author: Diana Detaux | Filed under: Wiki | Tags: Basic Physics, Force, Gravity, physics, Wiki | Comments Off on Wiki! Force
In physics, force is what changes or tends to change a state of rest or motion in an object. Force causes objects to accelerate, add to the object’s overall pressure, change direction, or change shape. Force is measured in Newtons. (‘N’).
According to Newton’s Second Law of Motion, the formula for finding force is:
where is the force,
is the mass of an object,
and is the acceleration of the object.
If one sets to the standard gravity g, then another formula can be found:
where is the weight of an object,
is the mass of an object,
and is the acceleration due to gravity at sea level.
at about .
Force is a vector, so it has both a magnitude and a direction.
Another equation that is useful is:
is force; is the gravitational constant, which is used to show how gravity accelarates an object; is the mass of one object; is the mass of the second object; and is the distance between the objects.
A force is always a push, pull, or a twist, and it affects objects by pushing them up, pulling them down, pushing them to a side, or by changing their motion or shape in some other way.
Posted: January 11th, 2011 | Author: Verity Penfold | Filed under: Wiki | Tags: Acetylsalicylic Acid, Antiplatelet, Arthur Eichengrün, Aspirin, Drugs, Esterification Reaction, medicine, Salicylic Acid, Wiki | Comments Off on Wiki! ASPIRIN
Aspirin, acetylsalicylic acid, is a salicylate drug, often used as an analgesic to relieve minor aches and pains, as an antipyretic to reduce fever, and as an anti-inflammatorymedication. Aspirin was first isolated by Felix Hoffmann, a chemist with the German drug company Bayer, under the direction of Arthur Eichengrün.
Salicylic acid, the main metabolite of aspirin, is an integral part of human and animal metabolism. While in humans much of it is attributable to diet, a substantial part is synthesized endogenously.
Aspirin also has an antiplatelet effect by inhibiting the production of thromboxane, which under normal circumstances binds platelet molecules together to create a patch over damaged walls of blood vessels. Because the platelet patch can become too large and also block blood flow, locally and downstream, aspirin is also used long-term, at low doses, to help prevent heart attacks, strokes, and blood clot formation.
It has been well established that low doses of aspirin may be given immediately after a heart attack to reduce the risk of another heart attack or of the death of cardiac tissue. Some people take a daily aspirin to reduce their risk of heart attack. New evidence suggests aspirin may be a powerful tool in cancer prevention, as well.
The main undesirable side effects of aspirin taken by mouth are gastrointestinal ulcers, stomach bleeding, and tinnitus, especially in higher doses. In children and adolescents, aspirin is no longer indicated to control flu-like symptoms or the symptoms of chickenpox or other viral illnesses, because of the risk of Reye’s syndrome :: Read the full article »»»»