Temporal and spatial adaptations during the acquisition of a reversal movement.
Adjustments of the biphasic movement in a coincidence anticipation task were studied using an erroneous knowledge of results (KR) paradigm. Forty participants received either no KR, correct KR, erroneous (+100 ms) KR, or 100 trials of correct KR followed by 50 trials of erroneous KR. Kinematic analyses revealed that for this 100-50 KR group the extension part of the movement was temporally adjusted under the influence of erroneous KR. Although accompanied by a decrease in movement amplitude, this did not account for the temporal shift in movement outcome, because all groups showed a reduction in amplitude. It is argued that changing external time constraints mainly results in temporal adaptations. However, spatial adaptations do play a role in kinematic changes during acquisition.
van Loon
E M
EM
Department of Movement Sciences, Maastricht University, Netherlands.
Buekers
M J
MJ
Helsen
W
W
Magill
R A
RA
D000222:Adaptation, Physiological; D000293:Adolescent; D000328:Adult; D005246:Feedback; D005260:Female; D006801:Humans; D007721:Knowledge of Results, Psychological; D008297:Male; D009068:Movement / Q000502:physiology*; D011597:Psychomotor Performance; D013177:Sports / Q000502:physiology