High-speed cinematography of muscle contraction.
Motion pictures of the "twitch" of an excised frog gastrocnemius muscle taken at rates of 6000 frames per second provide a means of very accurately timing the phases. The extreme "slow motion" reveals surface phenomena not observable by other techniques. Evidence of "active relaxation" is suggested by results of frame-by-frame analysis.
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D006801:Humans; D009040:Motion Pictures; D009119:Muscle Contraction; D018482:Muscle, Skeletal; D009132:Muscles / Q000502:physiology*
MOTION PICTURES; MUSCLES/physiology