Visuo-motor learning with combination of different rates of motor imagery and physical practice
Visuo-motor learning with combination of different rates of motor imagery and physical practice
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DOI：
10.1007/s00221-007-1086-x
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发表时间：
2008-01-01
影响因子：
2
通讯作者：
Boussaoud, Driss
中科院分区：
文献类型：
--
作者：
Allami, Nadia;Paulignan, Yves;Boussaoud, Driss
运动心理学认为，心理排练有助于运动员的身体练习，临床康复试图利用心理排练恢复偏瘫患者的运动功能。我们的目的是检验心理排练是否等同于身体学习，并确定真实的执行和排练的最佳比例。受试者被要求抓住一个物体，并将其插入一个适应槽。一组（G 0）仅通过物理执行来练习任务（240次试验）;三组想象在不同的试验率下执行任务（25%，G25; 50%，G50; 75%，G75），以及其余试验的身体执行动作;第四组，控制组在75%的试验中想象了视觉旋转任务，然后执行与其他组相同的运动任务。比较各组第一次和最后一次身体试验以及其他关键试验的运动时间（MT）。所有的小组都学会了，这表明心理排练等同于身体运动学习。更重要的是，当受试者为大量试验（G50和G75）排练任务时，第一次执行试验的MT显著短于物理组（G 0）的第一次执行试验，表明心理练习比根本不练习要好。G25、G50和G75的第一次执行试验与G 0的相应试验（61、121和181次试验）的比较表明，心理和身体练习之间具有等效性。在训练结束时，与单独的身体练习（G 0）相比，高心理练习率（G50/G75）的表现要好得多，特别是当任务很难时。这些研究结果证实了心理排练可以有利于运动学习，并建议在临床康复中，图像可以用来补充或部分取代身体练习。
Sports psychology suggests that mental rehearsal facilitates physical practice in athletes and clinical rehabilitation attempts to use mental rehearsal to restore motor function in hemiplegic patients. Our aim was to examine whether mental rehearsal is equivalent to physical learning, and to determine the optimal proportions of real execution and rehearsal. Subjects were asked to grasp an object and insert it into an adapted slot. One group (G0) practiced the task only by physical execution (240 trials); three groups imagined performing the task in different rates of trials (25%, G25; 50%, G50; 75%, G75), and physically executed movements for the remaining trials; a fourth, control group imagined a visual rotation task in 75% of the trials and then performed the same motor task as the others groups. Movement time (MT) was compared for the first and last physical trials, together with other key trials, across groups. All groups learned, suggesting that mental rehearsal is equivalent to physical motor learning. More importantly, when subjects rehearsed the task for large numbers of trials (G50 and G75), the MT of the first executed trial was significantly shorter than the first executed trial in the physical group (G0), indicating that mental practice is better than no practice at all. Comparison of the first executed trial in G25, G50 and G75 with the corresponding trials in G0 (61, 121 and 181 trials), showed equivalence between mental and physical practice. At the end of training, the performance was much better with high rates of mental practice (G50/G75) compared to physical practice alone (G0), especially when the task was difficult. These findings confirm that mental rehearsal can be beneficial for motor learning and suggest that imagery might be used to supplement or partly replace physical practice in clinical rehabilitation.