The title “Head Rotation (Contralateral)” refers to the movement of turning the head away from the side where the involved muscles are contracting. This occurs because certain muscles generate contralateral rotation, meaning that if the muscles on the right side of the neck contract, the head rotates to the left, and vice versa. Head Rotation describes the movement of turning the head along the transverse (horizontal) plane, while Contralateral specifies that the movement is produced by muscles