Final answer:
No, electromyography is not used primarily to measure bladder contraction. It is used to measure and record the electrical activity of muscles.
Step-by-step explanation:
No, electromyography is not used primarily to measure bladder contraction. Electromyography, or EMG, is a technique used to measure and record the electrical activity of muscles. It is commonly used to diagnose muscle disorders or to evaluate muscle function.
Bladder contraction, on the other hand, can be measured using a different technique called cystometry, which involves the insertion of a catheter into the bladder to measure its pressure and volume changes during filling and emptying.