accounting for the decreased amplitude of the compound muscle action potential while maintaining a normal nerve conduction velocity. The lack of change of the nerve conduction velocity would ...

During treatment, ptosis and extraocular palsies were relieved, strength in proximal muscles improved, and muscle-action potentials increased from 1 to 2 mV to 4 to 7 mV. IN the case of botulism ...

Patients selected for the study had more than a 10% decrease of the compound muscle action potential amplitude (CMAPamp) from the first to the fourth response for both the deltoid and the APB muscles.

This provides a method of determining whether or not the previously reported muscle volume changes are a direct consequence of the action potential and are thus not connected with contraction as such.