1. Activity Measurement in Psychology and Medicine;Tryon,1991
2. Psychomotor activity in affective states;Kupfer;Arch Gen Psychiatry,1974
3. The movement-activated recording monitor: A third generation motor-activity monitoring system;McPartland;Behav Res Meth Instr,1976
4. An ambulatory activity monitor with solid state memory;Colburn;ISA Transact,1976
5. Wrist actigraphic measures of sleep and rhythms;Kripke;Electroencephalogr Clin Neurophysiol,1978