Fujiwara Kengo, Shimoda Rikako, Shibata Masatomo, Awano Yoshinaga, Shibayama Koji, Higashi Toshio
Medical Corporation Zeshinkai Nagasaki Rehabilitation Hospital, Ginya, Nagasaki 850-0854, Japan.
Graduate School of Biomedical Sciences, Nagasaki University, Sakamoto, Nagasaki 852-8520, Japan.
Brain Sci. 2022 Dec 23;13(1):29. doi: 10.3390/brainsci13010029.
Previous studies have reported that stroke patients have difficulty recalling the motor imagery (MI) of a task, also known as MI vividness. Research on combining MI with action observation is gaining importance as a method to improve MI vividness. We enrolled 10 right-handed stroke patients and compared MI vividness and cortical activity under different presentation methods (no inverted image, inverted image of another individual’s hand, and an inverted image of the patient’s nonparalyzed hand) using near-infrared spectroscopy. Images of the nonparalyzed upper limb were inverted to make the paralyzed upper limb appear as if it were moving. Three tasks (non inverted image, AO + MI (other hand), AO + MI (own hand)) were randomly performed on 10 stroke patients. MI vividness was significantly higher when the inverted image of the nonparalyzed upper limb was presented compared to the other conditions (p < 0.01). The activity of the cortical regions was also significantly enhanced (p < 0.01). Our study highlights the potential application of inverted images of a stroke patient’s own nonparalyzed hand in mental practice to promote the motor recovery of stroke patients. This technique achieved higher levels of MI vividness and cortical activity when performing motor tasks.
以往研究报道，中风患者在回忆任务的运动想象（MI）方面存在困难，即所谓的MI生动性。将MI与动作观察相结合作为一种提高MI生动性的方法，其研究正变得越来越重要。我们招募了10名右利手中风患者，并使用近红外光谱技术比较了不同呈现方式（非倒置图像、他人手部的倒置图像以及患者非瘫痪手的倒置图像）下的MI生动性和皮质活动。将非瘫痪上肢的图像倒置，以使瘫痪上肢看起来像是在运动。对10名中风患者随机进行三项任务（非倒置图像、动作观察+运动想象（他人手部）、动作观察+运动想象（自身手部））。与其他条件相比，呈现非瘫痪上肢的倒置图像时，MI生动性显著更高（p<0.01）。皮质区域的活动也显著增强（p<0.01）。我们的研究突出了中风患者自身非瘫痪手的倒置图像在心理练习中对促进中风患者运动恢复的潜在应用。该技术在执行运动任务时实现了更高水平的MI生动性和皮质活动。
