27
Participants
Start Date
November 30, 2007
Primary Completion Date
October 31, 2012
Study Completion Date
October 31, 2012
Bright Light Treatment (Sun Ray Sunbox SB-558)
Bright Light Treatment (Sun Ray Sunbox SB-558) using light intensity of 10,000 lux, administered during two 1 hour periods during the day.
Dim red light (Sun Ray Sunbox SB-558)
Dim red light box administered during two 1 hour periods during the day using
Northwestern University, Chicago
National Parkinson Foundation
OTHER
Northwestern University
OTHER