Yen Sheng-Che, Landry Jill M, Wu Ming
Department of Physical Therapy, Northeastern University, Boston, MA 02115, USA.
Sensory Motor Performance Program, Rehabilitation Institute of Chicago, Chicago, IL 60611, USA.
Hum Mov Sci. 2014 Jun;35:80-93. doi: 10.1016/j.humov.2014.03.006. Epub 2014 Apr 18.
Different forms of augmented feedback may engage different motor learning pathways, but it is unclear how these pathways interact with each other, especially in patients with incomplete spinal cord injury (SCI). The purpose of this study was to test whether augmented multisensory feedback could enhance aftereffects following short term locomotor training (i.e., adaptation) in patients with incomplete SCI. A total of 10 subjects with incomplete SCI were recruited to perform locomotor adaptation. Three types of augmented feedback were provided during the adaptation: (a) computerized visual cues showing the actual and target stride length (augmented visual feedback); (b) a swing resistance applied to the leg (augmented proprioceptive feedback); (c) a combination of the visual cues and resistance (augmented multisensory feedback). The results showed that subjects' stride length increased in all conditions following the adaptation, but the increase was greater and retained longer in the multisensory feedback condition. The multisensory feedback provided in this study may engage both explicit and implicit learning pathways during the adaptation and in turn enhance the aftereffect. The results implied that multisensory feedback may be used as an adjunctive approach to enhance gait recovery in humans with SCI.
不同形式的增强反馈可能会激活不同的运动学习通路，但目前尚不清楚这些通路之间是如何相互作用的，尤其是在不完全性脊髓损伤（SCI）患者中。本研究的目的是测试增强多感觉反馈是否能增强不完全性SCI患者短期运动训练（即适应）后的后效应。总共招募了10名不完全性SCI患者进行运动适应。在适应过程中提供了三种类型的增强反馈：（a）显示实际和目标步长的计算机视觉提示（增强视觉反馈）；（b）施加在腿部的摆动阻力（增强本体感觉反馈）；（c）视觉提示和阻力的组合（增强多感觉反馈）。结果表明，适应后所有条件下受试者的步长均增加，但在多感觉反馈条件下增加幅度更大且持续时间更长。本研究中提供的多感觉反馈可能在适应过程中激活了显性和隐性学习通路，进而增强了后效应。结果表明，多感觉反馈可作为一种辅助方法来促进SCI患者的步态恢复。
