Key Movement Overview:

• The movement in this example does involve some elbow flexion, but not actively, as the participant’s paretic arm remains in a fixed flexed position due to spasticity.

• The movement does not intentionally involve a shoulder shrug (scapular elevation) however, this movement may result in some involuntary scapular elevation as a compensatory response.

• Primary compensation occurs through slight trunk flexion (leaning forward) and lateral displacement (shifting sideways) to generate the necessary momentum to activate the switch.

• • The arm movement can be seen to be slightly controlled when the movement sequence has finished, and the arm returns back to the lap.