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Fibrillation

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Fibrillation

(Science: physiology) a small, local, involuntary contraction of muscle, invisible under the skin, resulting from spontaneous activation of single muscle cells or muscle fibres. Muscular twitching involving individual muscle fibers acting without coordination.Act or process of forming fibrils.A situation in the heart in which a large contraction of the ventricular muscle of the heart stopping blood from flowing normally. This situation can be remedied by passing an electrical current through the body usi.