Volitional Activity

Neural and muscular lesion may result in a reduced number of normal Motor Unit Action Potentials (MUAPs) and a reduced recruitment during volitional activity. Recruitment is defined as the activation of motor units with increasing strength of voluntary muscle contraction. It reflects the number of MUAPs identifiable during increasing activation when performing tasks like voicing.

Maximal activation of the muscle should be recorded and graded as following:

1. No Activity no activity 2. Single Fibre Pattern two fibers2 3. Strongly Decreased Recruitment Pattern strongly decreased2 4. Mildly Decreased Recruitment Pattern mildly decreased2 5. Normal/Dense Recruitment Pattern dense2 Discuss about it on the Forum