<qa>  What is the home-based motor testing program?Outcome measures: We will analyze time-related changes in several domains of motor function tremor, limb bradykinesia, fine motor bradykinesia, voice, reaction timemovement time and correlate these changes with the UPDRS at 3 and 6 months. We hypothesize that patients will find this assessment technology easy to use, a positive force in their lives, and that they will be committed to the program throughout its duration. Further, we hypothesize that motor changes will be detected with this technology at a time when UPDRS scores do not show decrements. Over six months, however, declines in the UPDRS will occur and correlate with the decrements in computer-based motor task. If, as we hypothesize, the home-based motor testing program is both feasible and useful in the assessment of early impairments in Parkinsons disease, it will be particularly applicable to neuroprotective trials currently being designed. 