Electromyography* comparing normal, neurogenic, and myopathic features

1. At rest (spontaneous activity): a. fibrillations, b. positive sharp waves, c. fasciculation.
2. Slight effort (motor unit potentials): d. giant polyphasic, e. BSAPS (brief-small-abundant polyphasic).
3. Strong effort (interference pattern): f. full, g. reduced units, h. reduced amplitude.