Centre for Sport & Exercise Science, Institute of Membrane and Systems Biology, University of Leeds, Leeds, UK.
J Exp Psychol Hum Percept Perform. 2010 Dec;36(6):1508-14. doi: 10.1037/a0020412.
Coordinated rhythmic movement is specifically structured in humans. Movement at 0° mean relative phase is maximally stable, 180° is less stable, and other coordinations can, but must, be learned. Variations in perceptual ability play a key role in determining the observed stabilities so we investigated whether stable movements can be acquired by improving perceptual ability. We assessed movement stability in Baseline, Post Training, and Retention sessions by having participants use a joystick to coordinate the movement of two dots on a screen at three relative phases. Perceptual ability was also assessed using a two-alternative forced choice task in which participants identified a target phase of 90° in a pair of displays. Participants then trained with progressively harder perceptual discriminations around 90° with feedback. Improved perceptual discrimination of 90° led to improved performance in the movement task at 90° with no training in the movement task. The improvement persisted until Retention without further exposure to either task. A control group's movement stability did not improve. Movement stability is a function of perceptual ability, and information is an integral part of the organization of this dynamical system.
协调的节奏运动在人类中是专门构建的。0°的相对相位的运动是最稳定的，180°的运动稳定性较差，而其他协调运动可以，但必须是可以学习的。感知能力的变化在确定观察到的稳定性方面起着关键作用，因此我们研究了通过提高感知能力是否可以获得稳定的运动。我们通过让参与者使用操纵杆在三个相对相位上协调屏幕上两个点的运动，在基线、培训后和保留期评估参与者的运动稳定性。我们还使用二选一的强制选择任务评估感知能力，参与者在一对显示器中识别目标相位为 90°。然后，参与者在有反馈的情况下围绕 90°进行逐步更难的感知辨别训练。对 90°的感知辨别能力的提高导致在 90°的运动任务中表现提高，而在运动任务中没有进行任何训练。这种提高一直持续到保留期，而无需进一步接触任何任务。对照组的运动稳定性没有提高。运动稳定性是感知能力的一个函数，信息是这个动力系统组织的一个组成部分。
