 Motor performance will be measured using MRI-compatible touch sensitive tablets and pencils. This system allows registration and translation of writing movements into online-cursor movements on screen in and outside a scanner environment. Both patient groups will be compared during a behavioral test battery consisting of i a trained sequence with and without visual cues; ii an untrained sequence with and without visual cues to test transfer; and iii a trained dual task to test automatization. Visual cues will consist of differently colored target zones of different band widths, indicating the scale and accuracy of writing. 