How does multiple motor unit summation differ from temporal 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).

it's the effect of a singel neurone as a way of achieving action potentian

True

the four phases of temporal summation are : fatigue, incomplete tetanus, treppe & complete tentanus.

Motor neurons and the muscle fibers they transmit signals to