2008 Virtual Rehabilitation最新文献

{"title":"A virtual rehabilitation system for wobble board balance training with children","authors":"D. Fitzgerald, N. Trakarnratanakul, L. Conroy, P. Nixon, B. Caulfield","doi":"10.1109/ICVR.2008.4625129","DOIUrl":"https://doi.org/10.1109/ICVR.2008.4625129","url":null,"abstract":"Virtual reality-based computer games may be a useful way to develop motor skills and increase activity levels in children. We have developed an interactive computer platform where users must tilt a wobble board to complete on-screen computer game tasks. We have conducted a pilot study with 81 school children who played the game and used a questionnaire to gather information on children's enjoyment levels and perceptions of the system. Findings showed a high level of enjoyment with the game and provided useful information for future research and development.","PeriodicalId":260355,"journal":{"name":"2008 Virtual Rehabilitation","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117067017","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}

{"title":"Effect of environment on motivation and sense of presence in healthy subjects performing reaching tasks","authors":"C. Lourenço, L. Azeff, H. Sveistrup, M. Levin","doi":"10.1109/ICVR.2008.4625143","DOIUrl":"https://doi.org/10.1109/ICVR.2008.4625143","url":null,"abstract":"Better rehabilitation outcomes have been linked to higher levels of motivation in animal models of stroke recovery. Virtual reality environments have been postulated to increase the participantpsilas level of engagement and motivation in performing motor tasks. We evaluated motivation and presence in two groups of healthy participants (<25 yrs old; ges25yrs old) performing similar reaching tasks in four different environments - physical, 2D virtual reality, 3D virtual reality and video game. Sense of presence and motivation in each environment were assessed. Overall, the participants rated the video gaming environment as being the most motivating and enjoyable. The level of presence was related to motivation for the younger group only for the 2D VR environment but for all three VR environments in the older group. Our findings suggest that training environments can be made more motivating using virtual reality which is an important factor in maximizing motor recovery in neurological patients. Further research is needed to develop highly motivating applications suited to specific rehabilitation goals and patient needs.","PeriodicalId":260355,"journal":{"name":"2008 Virtual Rehabilitation","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129695410","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}

{"title":"A low-tech virtual reality application for training of upper extremity motor function in neurorehabilitation","authors":"G. Prange, T. Krabben, B. Molier, Herman van der Kooij, M. Jannink","doi":"10.1109/ICVR.2008.4625113","DOIUrl":"https://doi.org/10.1109/ICVR.2008.4625113","url":null,"abstract":"Impaired motor function of the arm is one of the consequences of a neurological disorder, limiting movements that are essential for various daily activities, such as reaching and grasping. To achieve the best possible functional ability of the impaired arm, challenging and motivating training including active, functional and intensive exercises is essential during neurorehabilitation. Virtual reality (VR) is a suitable and promising way to implement these aspects. However, clinical use is limited by the requirement of high-tech equipment in many VR systems. On the other hand, commercial low-tech systems are less suitable for use in patients with motor disorders. In this paper, we describe the development of a relatively low-tech and inexpensive VR application, based on motion capturing, for specific use in neurorehabilitation. We also present some preliminary results of its evaluation in stroke, one of the largest rehabilitation populations.","PeriodicalId":260355,"journal":{"name":"2008 Virtual Rehabilitation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129739884","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}

{"title":"Virtual scene velocity influences postural responses to an inclined base of support","authors":"Yun Wang, R. V. Kenyon, E. Keshner","doi":"10.1109/ICVR.2008.4625119","DOIUrl":"https://doi.org/10.1109/ICVR.2008.4625119","url":null,"abstract":"Orientation of the body has been shown to adapt to sustained stance on a tilted support surface in subjects who were blindfolded or who had their eyes closed. Postural adaptation occurs even when the lower limbs are constrained, suggesting that there is central adaptation of the perception of vertical. These studies, however, were performed in the absence of visual inputs and it is not clear whether the presence of visual inputs would alter a central adaptive response to a physical displacement in space. In this study we have explored the relative contributions of surface tilt and visual velocity on the initial process of realignment to the vertical. Pitch motion of the visual field was presented at varying velocities to eight subjects (29.9 plusmn 2.8 yrs) standing quietly on a 3 deg toes-up tilt of the base of support. Onset of virtual scene and platform movement were synchronized in all trials. We hypothesized that motion of the visual world would affect the ability to return to the initial vertical position while standing on a tilted base of support. We found that in the first few seconds following stance on a tilted base of support, orientation in space was greatly influenced by the velocity of visual scene motion.","PeriodicalId":260355,"journal":{"name":"2008 Virtual Rehabilitation","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130606468","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}

{"title":"Use of a virtual environment to investigate planning of unconstrained reach actions after stroke: A feasibility study","authors":"Jill Campbell Stewart, James Gordon, C. Winstein","doi":"10.1109/ICVR.2008.4625114","DOIUrl":"https://doi.org/10.1109/ICVR.2008.4625114","url":null,"abstract":"Planning of reach actions can be inferred through examination of the scaling of kinematic features and through a deterministic statistical model that delineates a premovement plan and early compensatory adjustments. The influence of stroke-induced hemiparesis on these motor planning features is currently unknown. The purpose of this study is to determine the feasibility of using a 3-dimensional (3-D) virtual environment (VE) to investigate the planning of unconstrained reach actions in individuals post-stroke. Two non-disabled adults and one individual post-stroke reached to 9 targets displayed in 3 directions (straight, right 45deg, left 45deg) and 3 extents (8 cm, 16 cm, 24 cm) for a total of 108 trials with each arm. Reach trajectories were analyzed, kinematics variables extracted, and a statistical model applied to infer motor planning. All participants were able to complete the VR task although changes were required to ease accuracy requirements for the participant with stroke. In the non-disabled participants, movement time averaged < 500 msec and mean endpoint error increased based on target extent. The participant with stroke had similar movement times (485 plusmn 98 msec) when reaching with the right/ipsilesional UE but longer movement times (761 plusmn 202 msec) when reaching with the left/contralateral UE. Endpoint errors increased based on target extent in both arms in the participant with stroke but errors were overall larger when reaching with the left/contralateral UE. All participants scaled peak velocity to target distance although absolute values differed based on the arm used and the presence of stroke-induced hemiparesis. Scaling of peak acceleration was less consistent across participants. Overall, over 80% of movement distance could be explained by peak velocity and target distance in the non-disabled participants when trials were collapsed across direction. When reaching with the right/ipsilesional UE, the participant with stroke demonstrated an increased reliance on the premovement plan and decreased use of early compensatory adjustments. A similar trend was seen with the left/contralesional UE. Our results suggest that it is feasible to use an immersive VE to investigate the planning of 3-D reach actions in non-disabled adults and an individual with stroke-induced hemiparesis. Future work will develop a calibration system to determine system errors, compare performance in the VE with an analogous real-word task, and extend data collection to a larger group of individuals post-stroke.","PeriodicalId":260355,"journal":{"name":"2008 Virtual Rehabilitation","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125607708","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}

{"title":"TUPI - A library of components for accessibility systems for motor impairments","authors":"C.R. Franca, J. Borges, F. F. Sampaio","doi":"10.1109/ICVR.2008.4625150","DOIUrl":"https://doi.org/10.1109/ICVR.2008.4625150","url":null,"abstract":"This work reports the computer resources and assistive technologies for motor impaired people currently used in Brazil and proposes an alternative for generating accessibility tools. Then we present the TUPI Toolkit, a library of components to develop accessibility systems for persons with motor impairments. This system enables the creation of versatile adaptive programs relying on very little effort to provide adaptive computer systems at low cost, to be used in schools and universities.","PeriodicalId":260355,"journal":{"name":"2008 Virtual Rehabilitation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130155452","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}

{"title":"Feedback distortion to augment controllability of human limb motion","authors":"B. Dellon, Y. Matsuoka","doi":"10.1109/ICVR.2008.4625115","DOIUrl":"https://doi.org/10.1109/ICVR.2008.4625115","url":null,"abstract":"Virtual robotic rehabilitation is beginning to show its efficacy in motor function recovery for stroke survivors. However, due to the lack of understanding in the potential danger imposed by large energetic actuators safety for intimate interaction is typically not taken into account beyond software. For this reason the ability to extend virtual robotic rehabilitation to hospital or domestic settings is limited. Our group has constructed a safer, purely dissipative, robotic device for rehabilitation of large whole body movements. Consequently, shifting to passive actuation fundamentally changes common control strategies that work well for active devices. In this paper, we present a method that distorts visual feedback to the subjects as a first step to achieve the desired controllability hereto limited by passivity constraints. With visual distortion we demonstrate how a subjectpsilas arm trajectory can be altered in a way that passive actuation alone cannot. Our results show that subjects involuntarily changed their path motion up to 30% with distortion applied; this ability to steer userpsilas movements can be harnessed to offset controllability issues.","PeriodicalId":260355,"journal":{"name":"2008 Virtual Rehabilitation","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133000699","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}

{"title":"Usability evaluation of e-motion: A virtual rehabilitation system designed to demonstrate, instruct and monitor a therapeutic exercise programme","authors":"D. Fitzgerald, D. Kelly, T. Ward, C. Markham, B. Caulfield","doi":"10.1109/ICVR.2008.4625151","DOIUrl":"https://doi.org/10.1109/ICVR.2008.4625151","url":null,"abstract":"The importance of systematic usability evaluation of virtual rehabilitation systems cannot be underestimated. We have developed a virtual rehabilitation system with the functionality to guide a user through a therapeutic exercise programme. Progression is determined by userspsila ability to replicate movements as demonstrated by an on-screen character. Visual and auditory corrective feedback is provided during exercise in order to improve the userpsilas postural control and biomechanical alignment. The objective of this study was to evaluate the usability of our system and subsequently implement modifications aimed at improving fidelity and ease of use. The first stage of our evaluation involved conducting an expert walkthrough with six experts currently researching in areas related to the system design. Following system refinement and modification we conducted a user evaluation study with twelve novice users using VRUSE, a computerised questionnaire-based usability evaluation tool for assessment of virtual environments. Results have provided a systematic evaluation of the system, provided information for guidance on system alterations and will allow comparison of usability levels with similar virtual rehabilitation systems tested with the same protocol.","PeriodicalId":260355,"journal":{"name":"2008 Virtual Rehabilitation","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127964909","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}

{"title":"RUPERT: An exoskeleton robot for assisting rehabilitation of arm functions","authors":"S. Balasubramanian, R. Wei, M. Perez, B. Shepard, E. Koeneman, J. Koeneman, Jiping He","doi":"10.1109/ICVR.2008.4625154","DOIUrl":"https://doi.org/10.1109/ICVR.2008.4625154","url":null,"abstract":"The design of a wearable upper extremity therapy robot RUPERT IVtrade (Robotic Upper Extremity Repetitive Trainer) device is presented. It is designed to assist in repetitive therapy tasks related to activities of daily living which has been advocated for being more effective for functional recovery. RUPERTtrade has five actuated degrees of freedom driven by compliant and safe pneumatic muscle actuators (PMA) assisting shoulder elevation, humeral external rotation, elbow extension, forearm supination and wrist/hand extension. The device is designed to extend the arm and move in a 3D space with no gravity compensation, which is a natural setting for practicing day-to-day activities. Because the device is wearable and lightweight, the device is very portable; it can be worn standing or sitting for performing therapy tasks that better mimic activities of daily living. A closed-loop controller combining a PID-based feedback controller and a iterative learning controller (ILC)-based feedforward controller is proposed for RUPERT for passive repetitive task training. This type of control aids in overcoming the highly nonlinear nature of the plant under control, and also helps in adapting easily to different subjects for performing different tasks. The system was tested on two able-bodied subjects to evaluate its performance.","PeriodicalId":260355,"journal":{"name":"2008 Virtual Rehabilitation","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123314649","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}

{"title":"Wii-habilitation increases participation in therapy","authors":"A. Ramchandani, K. Carroll, R. Buenaventura, J. Douglas, Justina Y. W. Liu","doi":"10.1109/ICVR.2008.4625132","DOIUrl":"https://doi.org/10.1109/ICVR.2008.4625132","url":null,"abstract":"Patients working with the Wii will participate in dynamic standing and sitting exercises longer secondary to visual stimulus and distraction.","PeriodicalId":260355,"journal":{"name":"2008 Virtual Rehabilitation","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133473281","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}