| motor neuron disease |
Motor neurone disease (MND) is a term used to cover a number of illnesses of the motor neurone: amyotrophic lateral sclerosis (ALS), progressive muscular atrophy (PMA), progressive bulbar palsy (PBP) and progressive lateral sclerosis (PLS). MND is the term used internationally while ALS is often used in the United States (where it is also known as Lou Gehrig's disease, after a famous patient) to cover all forms of MND. ...
출처: en.wikipedia.org/wiki/Motor_neuron_disease
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| motor unit |
A motor unit is a single motor neuron and the corresponding muscle fibers it innervates; groups of motor units work together, as a single muscle. The number of muscle fibers within each unit can vary: thigh muscles can have a thousand fibers in each unit, eye muscles might have ten. In general, the number of muscle fibers innervated by a motor unit is a function of a muscle's need for refined motion. ...
출처: en.wikipedia.org/wiki/Motor_unit
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| motor cortex |
Back in the 1940s, Canadian neurosurgeon Wilder Penfield wanted to know which bits of epileptic's brains he could suck out without them noticing. To work out which were the really important bits of cortex he electrically stimulated the cortical surface and observed the results. He found that stimulation of Brodmann's area 4 readily elicited localised muscle twitches. Furthermore there appeared to be a “motor map” of the body surface along the gyrus that comprises area 4. ...
출처: en.wikipedia.org/wiki/Motor_cortex
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| motion |
In physics, motion means a change in the position of a body with respect to time, as measured by a particular observer in a particular frame of reference. Until the end of the 19th century, Newton's laws of motion, which he posited as axioms or postulates in his famous Principia, were the basis of what has since become known as classical physics. ...
출처: en.wikipedia.org/wiki/Motion
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| motion sickness |
Motion sickness, also called seasickness, carsickness, airsickness or space sickness, depending on what one has been traveling in, is a condition in which the endolymph (the fluid found in the semicircular canals of the inner ears) becomes 'stirred up', causing confusion between the difference between apparent perceived movement (none or very little), and actual movement. It can result from lying in the berth of a rolling boat without being able to see the outside. ...
출처: en.wikipedia.org/wiki/Motion_sickness
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