IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society最新文献_第10页

Restoration of use of paralyzed limb muscles using sensory nerve signals for state control of FES-assisted walking. 利用感觉神经信号控制fes辅助行走的状态，恢复瘫痪肢体肌肉的使用。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 1999-09-01 DOI: 10.1109/86.788466

K D Strange, J A Hoffer

{"title":"Restoration of use of paralyzed limb muscles using sensory nerve signals for state control of FES-assisted walking.","authors":"K D Strange, J A Hoffer","doi":"10.1109/86.788466","DOIUrl":"https://doi.org/10.1109/86.788466","url":null,"abstract":"A real-time functional electrical stimulation (FES) state controller was designed that utilized sensory nerve cuff signals from the cat forelimb to control the timing of stimulation of the Palmaris Longus (PalL) muscle during walking on the treadmill. Sensory nerve signals from the median and superficial radial nerves provided accurate, reliable feedback related to foot contact and lift-off which, when analyzed with single threshold Schmitt triggers, produced valuable state information about the step cycle. The study involved three experiments: prediction of the timing of muscle activity in an open-loop configuration with no stimulation, prediction of the timing of muscle activity in a closed-loop configuration that included stimulation of the muscle over natural PaIL electromyogram (EMG), and temporary paralysis of selected forelimb muscles coupled with the use of the state controller to stimulate the PalL in order to return partial support function to the anesthetized limb. The FES state controller was tested in a variety of walking conditions, including different treadmill speeds and slopes. The results obtained in these experiments demonstrate that nerve cuff signals can provide a useful source of feedback to FES systems for control of limb function.","PeriodicalId":79442,"journal":{"name":"IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society","volume":"7 3","pages":"289-300"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/86.788466","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21360912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 60

Design of a haptic data visualization system for people with visual impairments. 视障人士触觉数据可视化系统设计。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 1999-09-01 DOI: 10.1109/86.788473

J P Fritz, K E Barner

{"title":"Design of a haptic data visualization system for people with visual impairments.","authors":"J P Fritz, K E Barner","doi":"10.1109/86.788473","DOIUrl":"https://doi.org/10.1109/86.788473","url":null,"abstract":"Data visualization is a technique used to explore real or simulated data by representing it in a form more suitable for comprehension. This form is usually visual since vision provides a means to perceive large quantities of spatial information quickly. However, people who are blind or visually impaired must rely on other senses to accomplish this perception. Haptic interface technology makes digital information tangible, which can provide an additional medium for data exploration and analysis. Unfortunately, the amount of information that can be perceived through a haptic interface is considerably less than that which can be perceived through vision, so a haptic environment must be enhanced to aid the comprehension of the display. This enhancement includes speech output and the addition of object properties such as friction and texture. Textures are generated which can be modified according to a characteristic or property of the object to which it is applied. For example, textures can be used as an analog to color in graphical displays to highlight variations in data. Taking all of these factors into account, methods for representing various forms of data are presented here with the goal of providing a haptic visualization system without the need for a visual component. The data forms considered include one-, two-, and three-dimensional (1-D, 2-D, and 3-D) data which can be rendered using points, lines, surfaces, or vector fields similar to traditional graphical displays. The end result is a system for the haptic display of these common data sets which is accessible for people with visual impairments.","PeriodicalId":79442,"journal":{"name":"IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society","volume":"7 3","pages":"372-84"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/86.788473","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21362117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 160

Tremor suppression using functional electrical stimulation: a comparison between digital and analog controllers. 用功能性电刺激抑制震颤:数字控制器和模拟控制器的比较。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 1999-09-01 DOI: 10.1109/86.788474

D M Gillard, T Cameron, A Prochazka, M J Gauthier

引用次数: 52

In vivo indentation of lower extremity limb soft tissues. 下肢软组织的活体压痕。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 1999-09-01 DOI: 10.1109/86.788464

M B Silver-Thorn

引用次数: 47

Effective elastic properties for lower limb soft tissues from manual indentation experiment. 手部压痕实验对下肢软组织有效弹性性能的影响。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 1999-09-01 DOI: 10.1109/86.788463

Y Zheng, A F Mak

{"title":"Effective elastic properties for lower limb soft tissues from manual indentation experiment.","authors":"Y Zheng, A F Mak","doi":"10.1109/86.788463","DOIUrl":"https://doi.org/10.1109/86.788463","url":null,"abstract":"Quantitative assessment of the biomechanical properties of limb soft tissues has become more important during the last decade because of the introduction of computer-aided design and computer-aided manufacturing (CAD/CAM) and finite element analysis to the prosthetic socket design. Because of the lack of a clinically easy-to-use apparatus, the site and posture dependences of the material properties of lower limb soft tissues have not been fully reported in the literature. In this study, an ultrasound indentation system with a pen-size hand-held probe developed earlier by the authors was used to obtain the indentation responses of lower limb soft tissues. Indentation tests were conducted on normal young subjects with four females and four males at four sites with three body postures. A linear elastic indentation solution was used to extract the effective Young's modulus from the indentation responses. The determined modulus ranged from 10.4 to 89.2 kPa for the soft tissues tested. These results were in a similar range as those reported in the literature. The thickness of the lower limb soft tissues varied slightly with body posture changes. The Young's modulus determined was demonstrated to be significantly dependent on site, posture, subject and gender. The overall mean modulus of male subjects was 40% larger than that of female subjects. No significant correlation was established between the effective Young's modulus and the thickness of entire soft tissue layers.","PeriodicalId":79442,"journal":{"name":"IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society","volume":"7 3","pages":"257-67"},"PeriodicalIF":0.0,"publicationDate":"1999-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/86.788463","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21360909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 122

Evaluation of a suture electrode for direct bladder stimulation in a lower motor neuron lesioned animal model. 缝合电极直接膀胱刺激下运动神经元损伤动物模型的评价。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 1999-06-01 DOI: 10.1109/86.769406

J S Walter, J S Wheeler, W Cai, W W King, R D Wurster

{"title":"Evaluation of a suture electrode for direct bladder stimulation in a lower motor neuron lesioned animal model.","authors":"J S Walter, J S Wheeler, W Cai, W W King, R D Wurster","doi":"10.1109/86.769406","DOIUrl":"https://doi.org/10.1109/86.769406","url":null,"abstract":"The purpose of this study was to evaluate a \"suture\" type electrode for direct bladder stimulation in an animal model of a lower motor neuron lesion. During an initial surgery, five male cats were instrumented under anesthesia using multistranded, 316 LVM, stainless-steel, wire electrodes implanted on the bladder wall serosa above the trigone area. Electrodes were constructed with a needle attached to the end that was removed after suturing the electrode in place. Additional instrumentation included urinary bladder catheters (tubes) for pressure recording and filling, and hook type electrodes for leg and pelvic floor electromyography recording. Chronic bladder filling and stimulation studies were conducted in tethered animals three to four weeks following surgery. To test these electrodes in a spinal cord injury model, a lower motor neuron lesion was performed including the sacral cord and complete nerve roots at L6 and below. These animals were evaluated during weeks 3 and 10 after injury. Direct bladder stimulation induced active contractions and voiding both before and after spinal cord injury. Effective stimulation parameters consisted of 40 pulses per s, 300 micros to 1 ms pulse duration, a stimulation period from 3 to 4 s, and a stimulation current from 10 to 40 mA. Fluoroscopy revealed an open membranous urethra during stimulation and following stimulation. A small diameter penile urethra was observed to limit flow. Postmortem evaluation of the suture electrode revealed no abnormalities such as corrosion, migration into the bladder lumen or displacement. These findings indicate that suture electrodes are suitable and effective for short-term implantation in the lower motor neuron animal model.","PeriodicalId":79442,"journal":{"name":"IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society","volume":"7 2","pages":"159-66"},"PeriodicalIF":0.0,"publicationDate":"1999-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/86.769406","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21258620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 36

Myoelectric activation pattern during gait in total knee replacement: relationship with kinematics, kinetics, and clinical outcome. 全膝关节置换术中步态中的肌电激活模式:与运动学、动力学和临床结果的关系。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 1999-06-01 DOI: 10.1109/86.769404

M G Benedetti, P Bonato, F Catani, T D'Alessio, M Knaflitz, M Marcacci, L Simoncini

{"title":"Myoelectric activation pattern during gait in total knee replacement: relationship with kinematics, kinetics, and clinical outcome.","authors":"M G Benedetti, P Bonato, F Catani, T D'Alessio, M Knaflitz, M Marcacci, L Simoncini","doi":"10.1109/86.769404","DOIUrl":"https://doi.org/10.1109/86.769404","url":null,"abstract":"Gait usually presents an excellent improvement after total knee replacement. Nevertheless, some abnormalities persist even after a long period of time. The abnormal knee patterns have been attributed to several possible causes, such as implant geometry and surgical technique, posterior cruciate ligament sparing/sacrificing, preoperative \"stiff-knee\" pattern due to pain and altered biomechanics, weakness of the extensor muscles, preoperative arthritic pattern, proprioceptive deficiency, and multijoint degenerative involvement. Cocontraction of the knee flexors and extensors is a common strategy adopted to reduce strain and shear forces at the joint, but it increases compressive forces and joint loading. Even in patients with an excellent functional score, the duration of the implant may be compromised by an altered neuromuscular control of the knee. In this paper, we report a single case study carried out over two years on a patient that underwent total knee replacement. The aim of this work is to show that quantitative gait analysis is essential to augment the understanding of the mechanisms underlying gait, thus enabling clinicians to adapt the rehabilitation program to the specific patient. Although the limits of single case reports are obvious, we believe that this evaluation methodology could be beneficial for assessing the effectiveness of rehabilitation programs aimed at achieving an active control of the knee during gait through a correct muscular activation pattern.","PeriodicalId":79442,"journal":{"name":"IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society","volume":"7 2","pages":"140-9"},"PeriodicalIF":0.0,"publicationDate":"1999-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/86.769404","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21258618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 85

The effects of epimysial electrode location on phrenic nerve recruitment and the relation between tidal volume and interpulse interval. 膜外电极位置对膈神经恢复的影响及潮气量与脉间间隔的关系。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 1999-06-01 DOI: 10.1109/86.769405

B D Schmit, J T Mortimer

{"title":"The effects of epimysial electrode location on phrenic nerve recruitment and the relation between tidal volume and interpulse interval.","authors":"B D Schmit, J T Mortimer","doi":"10.1109/86.769405","DOIUrl":"https://doi.org/10.1109/86.769405","url":null,"abstract":"Electrode location is of vital importance to diaphragm pacing devices using electrodes implanted on the diaphragm. Complete phrenic nerve recruitment with a single epimysial electrode implanted on the abdominal surface of the diaphragm required placement within 1 cm of the motor point. Recruitment could be increased further using multiple electrodes, provided the electrodes were implanted on opposite sides of the phrenic nerve motor point. The location of the implanted electrode relative to the phrenic nerve motor point also affected the relation between the stimulus interpulse interval (IPI) and the measured tidal volume. Specifically, we found that electrodes implanted lateral to the phrenic nerve motor point had different tidal volume--IPI relations than electrodes placed anterior or posterior to the motor point. We concluded that properly placed epimysial electrodes are required to obtain adequate phrenic nerve recruitment for full time ventilation and knowledge of the relative location of the electrode with respect to motor point is necessary to predict the tidal volume produced by a specific IPI.","PeriodicalId":79442,"journal":{"name":"IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society","volume":"7 2","pages":"150-8"},"PeriodicalIF":0.0,"publicationDate":"1999-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/86.769405","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21258619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

A new strategy for controlling the level of activation in artificially stimulated muscle. 一种控制人工刺激肌肉激活水平的新策略。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 1999-06-01 DOI: 10.1109/86.769407

T I Brown, Y Huang, D L Morgan, U Proske, A Wise

{"title":"A new strategy for controlling the level of activation in artificially stimulated muscle.","authors":"T I Brown, Y Huang, D L Morgan, U Proske, A Wise","doi":"10.1109/86.769407","DOIUrl":"https://doi.org/10.1109/86.769407","url":null,"abstract":"Distributed stimulation of slow skeletal muscle has previously been used to produce smooth tetanic contractions at low stimulus rates. This involved distributed or interleaved stimulation of portions of the muscle with near equal tension contributions. Extending this to fast and mixed muscle encounters difficulties in getting and maintaining equal twitch responses for the portions. This need has now been circumvented by using distributed stimulation with unequal interpulse intervals. Described here is a microprocessor-based eight channel distributed muscle stimulator that can adjust stimulation timing to produce an optimally smooth tension over a range of stimulus rates even when the portions are unequal. This design is based on modeling results. Distributed stimulation experiments performed on skeletal muscle show that this method can be used to achieve smooth tension at physiological stimulus rates, which should reduce fatigue. This has important implications in functional neuromuscular stimulation (FNS) as well as in enabling experiments to be conducted to characterize the biomechanical behavior of partially activated fast and mixed muscle.","PeriodicalId":79442,"journal":{"name":"IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society","volume":"7 2","pages":"167-73"},"PeriodicalIF":0.0,"publicationDate":"1999-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/86.769407","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21259237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Robotic assistance of an active upper limb exercise in neurologically impaired patients. 神经损伤患者主动上肢运动的机器人辅助。

IEEE transactions on rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society Pub Date : 1999-06-01 DOI: 10.1109/86.769416

J A Cozens

引用次数: 113