The increasing prevalence of dementia is a serious threat to our medical system and our society. About 500,000 Canadians are affected with dementia, and this number will rise to more than 1 million in the next 20 years. Dementia already costs our economy 15 billion dollars per year. While much of
Inclusion Criteria Idiopathic Parkinson's disease (2 of 3 of the cardinal symptoms, tremor, bradykinesia, rigidity) Mini Mental State Examination > 24 Anti-parkinsonian medications stable for one month Hoehn and Yahr II-IV
Exclusion Criteria Atypical parkinsonism History of seizure, drug addiction