Swinnen S P, Walter C B
Hum Factors. 1991 Aug;33(4):367-87. doi: 10.1177/001872089103300401.
The effect of practice on the parallel organization and control of discrete, asymmetrical bimanual movements was investigated. Subjects performed a flexion movement in the left limb together with a flexion-extension-flexion movement in the right limb. Two groups, one of which received kinematic information feedback, were instructed to produce the different patterns simultaneously. A third group performed each movement in isolation at all times, serving as the baseline condition. The degree of success in parallel action organization was assessed at the qualitative (or structural) and quantitative (or metrical) level of movement specification. Findings revealed that the bimanual groups displayed a tendency to synchronize the patterns of motor output, resulting in (mutual) interference. However,the provision of augmented kinematic information feedback resulted in more successful metrical and structural dissociation of the limb actions. The results are discussed in support of a movement dynamics perspective on motoric dual-task performance. The relevance of the approach for human factors is also emphasized.
研究了练习对离散、不对称双手运动的并行组织和控制的影响。受试者在左肢进行屈曲运动，同时在右肢进行屈曲-伸展-屈曲运动。两组受试者被要求同时产生不同的模式，其中一组接受运动学信息反馈。第三组受试者始终单独进行每个动作，作为基线条件。在运动规范的定性（或结构）和定量（或度量）水平上评估并行动作组织的成功程度。研究结果表明，双手组表现出同步运动输出模式的趋势，从而导致（相互）干扰。然而，提供增强的运动学信息反馈导致肢体动作在度量和结构上更成功地分离。讨论了这些结果以支持关于运动双任务表现的运动动力学观点。还强调了该方法对人为因素的相关性。
