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.