Studies of parkinsonian movement: 2. Initiation of fast voluntary eye movement during postural disturbance.
Delay in initiation of rapid voluntary eye movements (saccades) in bradykinetic parkinsonian patients and normal subjects was recorded with and without postural disturbances (rotation of the body and head). Parkinsonian patients as a group exhibited longer delays in the initiation of saccades. The delay increased during postural disturbance in both the patients and the normal subjects. The study failed to substantiate the hypothesis that postural reflexes interfere with the initiation of voluntary movement in Parkinsonism.
D000328:Adult; D000368:Aged; D003624:Darkness; D005133:Eye Movements; D006801:Humans; D008875:Middle Aged; D010300:Parkinson Disease / Q000503:physiopathology*; D011187:Posture; D012018:Reflex / Q000502:physiology; D012438:Saccades