Effect of Motor Imagery on Tremor in a Patient With Parkinson Disease Undergoing Intraoperative Testing

The mechanism by which Parkinson disease (PD) rest tremor is suppressed during volitional movement remains unclear.Motor imagery (MI) has been shown through invasive and Figure STN Activity and Tremor Changes During Motor Imagery Left-hand tremor is suppressed during imagery of opening and closing while right-hand tremor persists.Spectrograms show STN beta suppression at imagined movement onset and increased gamma power near cessation, aligned with contralateral tremor suppression.STN = subthalamic nucleus.