Tactile and proprioception feedback are essential to myoelectric hand prostheses control for regaining functionality of lost hands of amputees.Current studies focus on tactile feedback,while the lack of appropriate mu...Tactile and proprioception feedback are essential to myoelectric hand prostheses control for regaining functionality of lost hands of amputees.Current studies focus on tactile feedback,while the lack of appropriate multisensory feedback,especially proprioception feedback,limits the grasping quality.Additionally,a typical non-invasive stimulation scheme for sensation feedback uses stimulation on the stationary site of the skin continuously,which can lead to fatigue and adaptation of sensation,further reduces the feedback consistency,and increases the cognitive burden for the subject.Considering the sensitivity and modality matching of sensation,this study presented a multimodal sensations feedback scheme based on hybrid static-dynamic sensation elicited by multisite Transcutaneous Electrical Nerve Stimulation(TENS)to deliver grasping force and joint position feedback.In the proposed scheme,stimulation of single electrode produced only in-loco tactile sensation under the electrode,and the sensation intensity was adjusted according to grasping force;sequential activation of multi-electrodes produced an illusion dynamic sensation of a stimulus moving,and the velocity and direction of movement were adjusted according to finger joint position.Psychometric test results demonstrated the identifiability of stimulus in the proposed scheme.Further,prosthetic hand closed-loop grasping tasks evaluate the effectiveness of the proposed feedback scheme.The results showed that the proposed feedback scheme could substantially improve the grasping accuracy and efficiency.In addition,the study outcomes also demonstrated the benefit of artificial proprioception feedback in grasping rapidity and security.展开更多
The rise in the cases of motor impairing therapy. Due to the current situation that the service illnesses demands the research for improvements in rehabilitation of the professional therapists cannot meet the need of ...The rise in the cases of motor impairing therapy. Due to the current situation that the service illnesses demands the research for improvements in rehabilitation of the professional therapists cannot meet the need of the motorimpaired subjects, a cloud robotic system is proposed to provide an Internet-based process for upper-limb rehabilitation with multimodal interaction. In this system, therapists and subjects are connected through the Internet using client/server architecture. At the client site, gradual virtual games are introduced so that the subjects can control and interact with virtual objects through the interaction devices such as robot arms. Computer graphics show the geometric results and interaction haptic/force is fed back during exercising. Both video/audio information and kinematical/physiological data axe transferred to the therapist for monitoring and analysis. In this way, patients can be diagnosed and directed and therapists can manage therapy sessions remotely. The rehabilitation process can be monitored through the Internet. Expert libraries on the central server can serve as a supervisor and give advice based on the training data and the physiological data. The proposed solution is a convenient application that has several features taking advantage of the extensive technological utilization in the area of physical rehabilitation and multimodal interaction.展开更多
目的:探究基于运动想象的脑机接口技术联合多模态感知反馈训练对脑卒中后严重偏瘫患者上肢运动功能恢复的临床可行性及有效性。方法:本研究纳入在院康复脑卒中慢性期患者12例,在常规康复训练基础上,增加基于运动想象的脑机接口联合多模...目的:探究基于运动想象的脑机接口技术联合多模态感知反馈训练对脑卒中后严重偏瘫患者上肢运动功能恢复的临床可行性及有效性。方法:本研究纳入在院康复脑卒中慢性期患者12例,在常规康复训练基础上,增加基于运动想象的脑机接口联合多模态感知反馈训练。在干预前后评估患者的上肢运动功能及日常生活活动能力,包括简化Fugl-Meyer量表上肢部分(FMA-UE)、腕关节主动活动度、手臂动作调查测试(action research arm test,ARAT)和Barthel指数(Barthel index,BI)。同时测量每位患者干预前后双侧M1区的运动诱发电位(motor evoked potentials,MEP),探讨脑机接口训练对脑重塑的影响。结果:所有患者均完成了治疗和评估,其中,FMA-UE及ARAT评分较干预前显著改善(P<0.05),FMA-UE从基线的(13.50±8.20)分提高到(15.92±9.28)分,ARAT评分从基线的(3.08±5.96)分提高到(4.75±7.52)分;所有患者在干预前均不能主动伸展腕关节,2例受试者有小范围的主动屈腕,而在干预后,4例患者出现了较为明显的患侧腕关节自主伸展,6例患者出现显著的腕关节主动屈曲;所有患者的BI评分均未显示出显著变化。在治疗过程中未观察到不良事件。结论:基于运动想象的脑机接口联合多模态感知反馈训练或能有效改善脑卒中严重偏瘫患者的上肢运动功能恢复。展开更多
基金supported by the National Key Research and Development Program of China(Grant No.2018YFB1307201)the National Natural Science Foundation of China(Grant Nos.51875120,91948302,U1813209).
文摘Tactile and proprioception feedback are essential to myoelectric hand prostheses control for regaining functionality of lost hands of amputees.Current studies focus on tactile feedback,while the lack of appropriate multisensory feedback,especially proprioception feedback,limits the grasping quality.Additionally,a typical non-invasive stimulation scheme for sensation feedback uses stimulation on the stationary site of the skin continuously,which can lead to fatigue and adaptation of sensation,further reduces the feedback consistency,and increases the cognitive burden for the subject.Considering the sensitivity and modality matching of sensation,this study presented a multimodal sensations feedback scheme based on hybrid static-dynamic sensation elicited by multisite Transcutaneous Electrical Nerve Stimulation(TENS)to deliver grasping force and joint position feedback.In the proposed scheme,stimulation of single electrode produced only in-loco tactile sensation under the electrode,and the sensation intensity was adjusted according to grasping force;sequential activation of multi-electrodes produced an illusion dynamic sensation of a stimulus moving,and the velocity and direction of movement were adjusted according to finger joint position.Psychometric test results demonstrated the identifiability of stimulus in the proposed scheme.Further,prosthetic hand closed-loop grasping tasks evaluate the effectiveness of the proposed feedback scheme.The results showed that the proposed feedback scheme could substantially improve the grasping accuracy and efficiency.In addition,the study outcomes also demonstrated the benefit of artificial proprioception feedback in grasping rapidity and security.
基金This work was supported by the National Key Research and Development Program of China under Grant No. 2016YFB1001300, the National Natural Science Foundation of China under Grant No. 61403080, and the Natural Science Foundation of Jiangsu Province Technology Support Plan under Grant No. BK20140641.
文摘The rise in the cases of motor impairing therapy. Due to the current situation that the service illnesses demands the research for improvements in rehabilitation of the professional therapists cannot meet the need of the motorimpaired subjects, a cloud robotic system is proposed to provide an Internet-based process for upper-limb rehabilitation with multimodal interaction. In this system, therapists and subjects are connected through the Internet using client/server architecture. At the client site, gradual virtual games are introduced so that the subjects can control and interact with virtual objects through the interaction devices such as robot arms. Computer graphics show the geometric results and interaction haptic/force is fed back during exercising. Both video/audio information and kinematical/physiological data axe transferred to the therapist for monitoring and analysis. In this way, patients can be diagnosed and directed and therapists can manage therapy sessions remotely. The rehabilitation process can be monitored through the Internet. Expert libraries on the central server can serve as a supervisor and give advice based on the training data and the physiological data. The proposed solution is a convenient application that has several features taking advantage of the extensive technological utilization in the area of physical rehabilitation and multimodal interaction.
文摘目的:探究基于运动想象的脑机接口技术联合多模态感知反馈训练对脑卒中后严重偏瘫患者上肢运动功能恢复的临床可行性及有效性。方法:本研究纳入在院康复脑卒中慢性期患者12例,在常规康复训练基础上,增加基于运动想象的脑机接口联合多模态感知反馈训练。在干预前后评估患者的上肢运动功能及日常生活活动能力,包括简化Fugl-Meyer量表上肢部分(FMA-UE)、腕关节主动活动度、手臂动作调查测试(action research arm test,ARAT)和Barthel指数(Barthel index,BI)。同时测量每位患者干预前后双侧M1区的运动诱发电位(motor evoked potentials,MEP),探讨脑机接口训练对脑重塑的影响。结果:所有患者均完成了治疗和评估,其中,FMA-UE及ARAT评分较干预前显著改善(P<0.05),FMA-UE从基线的(13.50±8.20)分提高到(15.92±9.28)分,ARAT评分从基线的(3.08±5.96)分提高到(4.75±7.52)分;所有患者在干预前均不能主动伸展腕关节,2例受试者有小范围的主动屈腕,而在干预后,4例患者出现了较为明显的患侧腕关节自主伸展,6例患者出现显著的腕关节主动屈曲;所有患者的BI评分均未显示出显著变化。在治疗过程中未观察到不良事件。结论:基于运动想象的脑机接口联合多模态感知反馈训练或能有效改善脑卒中严重偏瘫患者的上肢运动功能恢复。
