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An analysis of more than two thousand paintings may shed light on the development of brain diseases such as Alzheimer's and Parkinson's. A mathematical analysis of brush strokes shows that a change occurred in those who developed neurological diseases, years before any symptoms became obvious. Newsday's Paul Hawkins spoke to the lead researcher, Alex Forsythe from the University of Liverpool. (Photo: Joyce's daughter, Hazel, says her mum still enjoys painting, but before her dementia, her work was really striking. Credit: ÃÛÑ¿´«Ã½)