‚Äč

What is motor unit summation?

Answer

Motor unit summation is the build-up of the myoelectrical signals of the active motor unit during continuous, sustained muscle contraction. Sustained contraction causes the motor unit to fire continuously, creating myoelectrical signal fusion that produces larger forces than a single contraction.

A motor unit consists of an individual motor neuron and the muscle fibers that the neuron innervates. Muscle fibers depolarize in response to the action potential from the neuron, which creates an electric field around the muscle fibers, which is the signal known as the muscle fiber action potential. The sum of all muscle fiber action potentials is the myoelectrical signal of the motor unit.

Reference:
Q&A Related to "What is motor unit summation?"
When a greater number of motor units are present in a muscle and are able to be simultaneously stimulated causing an increase in muscle force (Sherwood, and Kell 271-272).
http://wiki.answers.com/Q/Multiple_Motor_Unit_Summ...
Summation is the act or process of summing. Thanks for using
http://www.chacha.com/question/what-is-multiple-mo...
1. Drain all oil from the gear case. Remove the fill plug and the drain plug and allow to drain completely. Inspect the oil as it comes out. If it looks like milk or peanut butter
http://www.ehow.com/how_5519821_remove-lower-unit-...
A motor unit is all of the muscle cells (approximately 1,500 muscle fibers of skeletal muscle) that are controlled by a single motor neuron. Previous question: What is writer's cramp
http://www.answers.com/topic/what-is-a-motor-unit
About -  Privacy -  Your Cookie Choices  -  Careers -  About P.G. Wodehouse -  Help -  Feedback  -  Sitemap  © 2014 IAC Search & Media