Figure 1
Electrophysiology study – case 1. (A) Average of 74 traces from simultaneous electromyography (EMG; top) and electroencephalographic (EEG; bottom) recordings. Markers were manually placed at the onset of each movement of the palate, and all movements were subsequently averaged. A Bereitschaftspotential (BP) is visible starting roughly 800 ms prior to movement onset. (B) An example of simultaneous EMG recordings of the palate (top) and APB (bottom) muscles during left-hand tapping at 1 Hz. The palatal movement is entrained at 1 Hz, and at the offset of tapping there is a clear change in the frequency of the palatal tremor.
Figure 2
Electrophysiology study – case 2. An example of simultaneous electromyography (EMG) recordings of the APB (top) and palate (bottom) muscles during left-hand tapping at 1 Hz. The palatal movement is entrained at 1 Hz, and at the offset of tapping there is a clear change in the frequency of the tremor back to 3 Hz.
Video 1
Time-locked video and Electromyographic recordings – case 2. Electromyography (EMG) and time-locked video from case 2 demonstrating entrainment of the palate to tapping. The EMG data correspond to that shown in Figure 2. Vertical lines in the video indicate when the recording begins (“video begins”), as well as when tapping with APB stopped (“Tapping stops”). EMG alignment to the video can be appreciated by observing the right side of the EMG traces as they enter the viewing screen.
| Name | Location | Role | Contribution |
|---|---|---|---|
| Felipe Vial | National Institutes of Health, NINDS | Author | Acquisition and interpretation of the data, writing the report |
| Emmanuel Akano | National Institutes of Health, NINDS | Author | Acquisition and interpretation of the data, writing the report |
| Patrick McGurrin | National Institutes of Health, NINDS | Author | Acquisition and interpretation of the data |
| Sanaz Attaripour | National Institutes of Health, NINDS | Author | Acquisition and interpretation of the data |
| Mark Hallett | National Institutes of Health, NINDS | Author | Writing the report |