EMG-RTs of biceps and triceps brachii muscles were measured in 3 different tasks: isolated motions, flexion or extension of either forearm; bilateral symmetrical motions, flexion or extension of both forearms; bilateral opposite motions, flexion of a forearm and extension of the other. EMG-RTs of opposite motions were slower than those of isolated and symmetrical motions, EMG-RTs of symmetrical motions were nearly equivalent to those of isolated motions. Simplicity and complexity of simultaneous motions are discussed.
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References
1.
AnnettJ.SheridanM. R.Effects of S-R and R-R compatibility on bimanual movement time. Quart. J. exp. Psychol., 1973, 25, 247–252.
2.
BarnesR. M.Motion and time study: Design and measurement of work. (6th ed.) New York: Wiley, 1968.
3.
CohenL.Synchronous bimanual movements performed by homologous and non-homologous muscles. Percept. mot. Skills, 1971, 32, 639–644.
4.
HongoT.NakamuraR.NarabayashiH.OshimaT.Reaction time and left-to-right difference of response in bilateral symmetrical movements performed by individual arm and hand muscles. Physiol. Behav., 1976, 16, 477–482.
5.
NakamuraR.SaitoH.Preferred hand and reaction time in different movement patterns. Percept. mot. Skills, 1974, 39, 1275–1281.
6.
NakamuraR.TaniguchiR.OshimaY.Synchronization error in bilateral simultaneous flexion of elbows. Percept. mot. Skills, 1975, 40, 527–532.
7.
NakamuraR.TaniguchiR.OshimaY.Preferred hand and steadiness of reaction time. Percept. mot. Skills, 1976, 42, 983–988.
8.
WykeM.Influence of direction on the rapidity of bilateral arm movements. Neuropsychol., 1969, 7, 189–194.
