In many post-stroke cases, patients show dysfunctions in movement, cognition, sense, and language, depending on the damaged area of the brain. Active and repetitive physical rehabilitation centered on the stroke-affected side is essential for effective and rapid neurological recovery of upper extremity dysfunction due to hemiplegia. A symmetric upper extremity trainer is utilized to assist the patient body, depending upon the degree of hemiplegia. In this study, we developed a novel balance handle as a symmetric upper extremity trainer capable of extension, flexion, pronation, and supination of the upper extremity. We collected the surface electromyogram (sEMG) signal data while the subjects were playing a serious game and recorded the electroencephalogram (EEG) signal data while the subjects were performing basic movements with the balance handle, to analyze the effectiveness of the device as an assistive tool for rehabilitation. The triceps brachii were activated during the extension movements, whereas the biceps brachii and deltoid muscles were activated during the flexion movements. With the balance handle, the peak event-related desynchronization (ERD) values were relatively lower while showing higher peak event-related synchronization (ERS) values compared to other types of operating methods, such as hand gripping and gamepad operation. Movement intention of tilting the balance handle for the α and β waves was clearly distinguished from the other tasks. These data demonstrated the potential of various applications using the developed proof-of-concept upper extremity trainer to bring out an excellent rehabilitative effect not only through muscle growth but also via identification of large movement intentions inducing brain activation exercise.

中文翻译：

---

认真比赛动作方法的动作意图检测

在许多中风后病例中，患者表现出运动，认知，感觉和语言功能障碍，具体取决于大脑受损部位。以中风影响侧为中心的积极而反复的身体康复对于有效和快速地恢复因偏瘫引起的上肢功能障碍的神经系统至关重要。根据偏瘫的程度，使用对称的上肢训练器协助患者身体。在这项研究中，我们开发了一种新颖的平衡手柄，作为对称的上肢训练器，能够伸展，弯曲，内旋和上肢仰卧。在受试者玩严肃游戏时，我们收集了表面肌电图（sEMG）信号数据，并在受试者用平衡手柄进行基本运动时记录了脑电图（EEG）信号数据，分析该设备作为康复辅助工具的有效性。肱三头肌在伸展运动中被激活，而肱二头肌和三角肌在屈曲运动中被激活。与其他类型的操作方法（例如，抓握和游戏手柄操作）相比，使用平衡手柄时，与事件相关的峰值不同步（ERD）值相对较低，而与事件相关的峰值（ERS）峰值较高。倾斜平衡手柄以应付α和β波的运动意图与其他任务明显不同。