Richard Fiske Bailey tries hard not to let Parkinson's disease slow him down. He has a license to drive motorcycles. He bikes. He walks without a cane or walker.
But there are moments when the disorder affects him, said Bailey, 59. Sometimes he drags his right foot and has a pinkie finger that sticks up without his volition.
"I'm not homebound by any means," he said. "Sometimes I appear completely normal, and other times something is clearly wrong."
Bailey, an independent business consultant, has taken another step in fighting the disease: He makes himself a subject for research that he hopes will lead to better understanding and more effective...