Question

1. What are the two general characteristics of the type of movements that could elicit the triphasic EMG pattern? (2 pts.)

Answer 1

Triphasic electromyographic (EMG) patterns have been described as characteristic of rapid, discrete, uniplanar, goal directed movements

EMG was recorded from triceps ( main agonist), brachioradialis, and biceps ( main antagonist)

The number of trials in which a triphasic EMG occured varied systematically across conditions

Triphasic EMG pattern occurs with a sequence of activity in agonist (AG1), antagonist (ANT) and again in agonist (AG2) muscles are characteristic of ballistic movements