Question

question 2
1 pts
the sum of all the muscle fiber potentials from all the active motor units that pass
thru the recording zone is the
definition of a motor unit action potential
definition of the emg signal
definition of electromechanical delay
the cause of muscular stiffness
none of the above

Explanation:

• A motor unit action potential is the electrical potential generated by a single motor unit, not the sum of all muscle fiber potentials from multiple active motor units.
• Electromechanical delay refers to the time lag between the electrical activation of a muscle and the onset of mechanical contraction, not the described sum.
• Muscular stiffness has various causes like muscle spasm, etc., not related to the sum of potentials as described.
• The EMG (electromyography) signal is indeed the sum of all the muscle fiber potentials from all the active motor units that pass through the recording zone.

Answer:

definition of the EMG signal