Preprogramming vs. on-line control in simple movement sequences.
In the present experiment the acceleration traces produced during a repetitive arm extension/flexion movement were measured in addition to the RT required to initiate such a movement. The speed at which this task was completed as well as the number of extension/flexion segments were varied to allow for either preprogramming or on-line control. Evidence from the acceleration traces and the RT data suggested that the movements completed as quickly as possible were preprogrammed; whereas, those completed more slowly were controlled on-line. Furthermore, the topologies of the power spectral density functions from the acceleration traces of each type of movement displayed characteristics typical of these forms of control.
van Donkelaar
P
P
University of British Columbia, Vancouver, Canada.
Franks
I M
IM
D000054:Acceleration; D000328:Adult; D001288:Attention; D006801:Humans; D007699:Kinesthesis; D011939:Mental Recall; D009949:Orientation; D011597:Psychomotor Performance; D011930:Reaction Time