How the CYBATHLON Competition Has Advanced Assistive Technologies

Jaeger, Lukas; Baptista, Roberto de Souza; Basla, Chiara; Capsi-Morales, Patricia; Kim, Yong Kuk; Nakajima, Shuro; Piazza, Cristina; Sommerhalder, Michael; Tonin, Luca; Valle, Giacomo; Riener, Robert; Sigrist, Roland

doi:10.1146/annurev-control-071822-095355

Cited by 8 publications

(5 citation statements)

References 128 publications

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“…This task focused primarily on training the full range of forearm pronation movement needed to completely empty the cup. To simulate activities of daily living in a pick and place scenario, the fourth scene reproduced the Clean Sweap task from the Cybathlon 2020 Global Edition [ 40 ] (Fig. 6 d).…”

Section: Methodsmentioning

confidence: 99%

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Experimental evaluation of the impact of sEMG interfaces in enhancing embodiment of virtual myoelectric prostheses

Castañeda,

Connan,

Capsi-Morales

et al. 2024

J NeuroEngineering Rehabil

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Introduction Despite recent technological advances that have led to sophisticated bionic prostheses, attaining embodied solutions still remains a challenge. Recently, the investigation of prosthetic embodiment has become a topic of interest in the research community, which deals with enhancing the perception of artificial limbs as part of users’ own body. Surface electromyography (sEMG) interfaces have emerged as a promising technology for enhancing upper-limb prosthetic control. However, little is known about the impact of these sEMG interfaces on users’ experience regarding embodiment and their interaction with different functional levels. Methods To investigate this aspect, a comparison is conducted among sEMG configurations with different number of sensors (4 and 16 channels) and different time delay. We used a regression algorithm to simultaneously control hand closing/opening and forearm pronation/supination in an immersive virtual reality environment. The experimental evaluation includes 24 able-bodied subjects and one prosthesis user. We assess functionality with the Target Achievement Control test, and the sense of embodiment with a metric for the users perception of self-location, together with a standard survey. Results Among the four tested conditions, results proved a higher subjective embodiment when participants used sEMG interfaces employing an increased number of sensors. Regarding functionality, significant improvement over time is observed in the same conditions, independently of the time delay implemented. Conclusions Our work indicates that a sufficient number of sEMG sensors improves both, functional and subjective embodiment outcomes. This prompts discussion regarding the potential relationship between these two aspects present in bionic integration. Similar embodiment outcomes are observed in the prosthesis user, showing also differences due to the time delay, and demonstrating the influence of sEMG interfaces on the sense of agency.

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Section: Methodsmentioning

confidence: 99%

“…c Puring balls from a cup into a bowl. d “Clean Sweep” task, known from Cybathlon 2020 [ 40 ]. e Box and blocks environment, where users can pick and place red blocks from one box to the other …”

Section: Methodsmentioning

confidence: 99%

Experimental evaluation of the impact of sEMG interfaces in enhancing embodiment of virtual myoelectric prostheses

Castañeda,

Connan,

Capsi-Morales

et al. 2024

J NeuroEngineering Rehabil

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“…Future work should also take into account the updated challenges for the 2024 Cybathlon event. The Cybathlon aims to progressively increase the level of functionality required or the devices participating in the different disciplines [6], and thus acts as a baseline for the development of such devices. The following lists focus areas that should be considered for improved performance at the 2024 Cybathlon [13]:…”

Section: Future Workmentioning

confidence: 99%

“…Each of these races test the ability of an operator and assistive device to complete a set of challenges which simulate real-life challenges faced by the disabled person. The Cybathlon thus provides a platform for the development of advanced assistive devices in a competitive environment with significant media attention [6]. The ARM race tests the ability of a pilot with a myoelectric or body-powered prosthetic arm to complete a range of everyday tasks such as hanging laundry, cutting bread, and opening a jar.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of performance results for low-cost 3D printed myoelectric prosthetic devices during Cybathlon 2020 ARM discipline

Kirkman,

Stopforth,

Hands

2023

MATEC Web Conf.

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The performance of a low-cost 3D printed myoelectric prosthetic device known as the Touch Hand 4.5, at the 2020 Cybathlon competition is discussed. This device is under development as a low-cost prosthetic device for upper-limb amputees. The Touch hand team placed 13th out of 15 teams at the Cybathlon competition. By assessing the performance of the device and comparing with the performance of competitors, avenues of future research for the improvement of the Touch hand are identified.

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“…Although the main metric used for the Cybathlon competition is based on the time to complete the race, we aim to analyze the performance of each team using a standard clinical assessment. Earlier studies on Cybathlon offer valuable perspectives on the influential role of this event in advancing the field of assistive technology and research impact [ 10 , 11 ]. Additionally, regarding the Powered Arm Prostheses Race, the preparatory activities associated with the Cybathlon competition have promoted a human-centered design approach [ 12 , 13 ] and have facilitated an effective test bench for assessing system performance in real-world settings [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Functional assessment of current upper limb prostheses: An integrated clinical and technological perspective

et al. 2023

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Although recent technological developments in the field of bionic upper limb prostheses, their rejection rate remains excessively high. The reasons are diverse (e.g. lack of functionality, control complexity, and comfortability) and most of these are reported only through self-rated questionnaires. Indeed, there is no quantitative evaluation of the extent to which a novel prosthetic solution can effectively address users’ needs compared to other technologies. This manuscript discusses the challenges and limitations of current upper limb prosthetic devices and evaluates their functionality through a standard functional assessment, the Assessment of Capacity for Myoelectric Control (ACMC). To include a good representation of technologies, the authors collect information from participants in the Cybathlon Powered Arm Prostheses Race 2016 and 2020. The article analyzes 7 hour and 41 min of video footage to evaluate the performance of different prosthetic devices in various tasks inspired by activities of daily living (ADL). The results show that commercially-available rigid hands perform well in dexterous grasping, while body-powered solutions are more reliable and convenient for competitive environments. The article also highlights the importance of wrist design and control modality for successful execution of ADL. Moreover, we discuss the limitations of the evaluation methodology and suggest improvements for future assessments. With regard to future development, this work highlights the need for research in intuitive control of multiple degrees of freedom, adaptive solutions, and the integration of sensory feedback.

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How the CYBATHLON Competition Has Advanced Assistive Technologies

Cited by 8 publications

References 128 publications

Experimental evaluation of the impact of sEMG interfaces in enhancing embodiment of virtual myoelectric prostheses

Experimental evaluation of the impact of sEMG interfaces in enhancing embodiment of virtual myoelectric prostheses

Evaluation of performance results for low-cost 3D printed myoelectric prosthetic devices during Cybathlon 2020 ARM discipline

Functional assessment of current upper limb prostheses: An integrated clinical and technological perspective

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