HUMAN MUSCLE
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BELOW ARE ACTUAL GRAPHICAL READINGS TAKEN FROM DR. SCHAEFER'S HUMAN MUSCLE LAB. THE GRAPHS DEPICT HOW HUMAN MUSCLE RESPONDS TO ELECTRICAL STIMULI. |
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| INDIVIDUAL TWITCH
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| THRESHOLD: MAXIMUM
STIMULATION
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| SUMMATION |
Students use weak electrical impulses to induce muscle contraction in the fingers. These contractions are measured by a trigger device, shown in the center of the picture.