Yágüez L, Nagel D, Hoffman H, Canavan A G, Wist E, Hömberg V
Neurological Therapy Center, University of Düsseldorf, Germany. yaguez@.uni-duesseldorf.de
Behav Brain Res. 1998 Jan;90(1):95-106. doi: 10.1016/s0166-4328(97)00087-9.
There are contrasting reports upon the level of effectiveness of motor imagery in learning new motor skills, but there is general consensus that motor imagery can lead to improvements in performance, especially in combination with physical practice. In the present study we examined the effectiveness of motor imagery in the acquisition of movement invariants in two grapho-motor trajectorial learning tasks with differing visuospatial components: 'Ideogram drawing' and 'connecting circles'. Two subject groups were studied: An imagery group, which underwent 10 min of motor imagery training and a control group, which practised a control visuomotor task over the same period of time. The results showed that imagery training alone enabled the subjects to achieve a significant approach to movement isochrony as well as a significant shifting of peak velocity toward the target. After a practice phase, both groups improved their performance, but the imagery group was still significantly faster than the control group. Furthermore, a series of tests measuring visual imagery abilities was administered to the subjects. There were however no significant relationships between the motor performance and the visual imagery ability levels of the subjects. It is concluded that motor imagery can improve the acquisition of the spatio-temporal patterns of grapho-motor trajectories and that there are different processes involved in visual and motor imagery.
关于运动想象在学习新运动技能方面的有效性程度，存在相互矛盾的报告，但人们普遍认为运动想象可以提高运动表现，特别是与身体练习相结合时。在本研究中，我们在两项具有不同视觉空间成分的书写运动轨迹学习任务中，即“表意文字绘制”和“连接圆圈”，检验了运动想象在获取运动不变量方面的有效性。研究了两个受试者组：一个想象组，接受了10分钟的运动想象训练；一个对照组，在同一时间段内练习一项对照视觉运动任务。结果表明，仅想象训练就能使受试者在运动等时性方面有显著进步，并且峰值速度明显向目标移动。经过一个练习阶段后，两组的表现都有所提高，但想象组仍然比对照组快得多。此外，对受试者进行了一系列测量视觉想象能力的测试。然而，受试者的运动表现与视觉想象能力水平之间没有显著关系。得出的结论是，运动想象可以改善书写运动轨迹的时空模式的获取，并且视觉想象和运动想象涉及不同的过程。
