Assessment of Intuitiveness and Comfort of Wearable Haptic Feedback Strategies for Assisting Level and Stair Walking

Nowadays, lower-limb prostheses are reaching real-world usability especially on ground-level walking. However, some key tasks such as stair walking are still quite demanding. Providing haptic feedback about the foot placement on the steps might reduce the cognitive load of the task, compensating for...

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Published inElectronics (Basel) Vol. 9; no. 10; p. 1676
Main Authors Cesini, Ilaria, Spigler, Giacomo, Prasanna, Sahana, D’Abbraccio, Jessica, De Luca, Daniela, Dell’Agnello, Filippo, Crea, Simona, Vitiello, Nicola, Mazzoni, Alberto, Oddo, Calogero Maria
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.10.2020
Subjects
Amputation
Artificial limbs
Experiments
Feedback
Haptics
Haptics technology
Innovations
Insoles
Medical research
Medicine, Experimental
Phase transitions
Pressure distribution
Prostheses
Self-help devices for the disabled
Walking
Wearable technology
Italy
Online AccessGet full text
ISSN2079-9292
2079-9292
DOI10.3390/electronics9101676

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Abstract Nowadays, lower-limb prostheses are reaching real-world usability especially on ground-level walking. However, some key tasks such as stair walking are still quite demanding. Providing haptic feedback about the foot placement on the steps might reduce the cognitive load of the task, compensating for increased dependency on vision and lessen the risk of falling. Experiments on intact subjects can be useful to define the feedback strategies prior to clinical trials, but effective methods to assess the efficacy of the strategies are few and usually rely on the emulation of the disability condition. The present study reports on the design and testing of a wearable haptic feedback system in a protocol involving intact subjects to assess candidate strategies to be adopted in clinical trials. The system integrated a sensorized insole wirelessly connected to a textile waist belt equipped with three vibrating motors. Three stimulation strategies for mapping the insole pressure data to vibrotactile feedback were implemented and compared in terms of intuitiveness and comfort perceived during level and stair walking. The strategies were ranked using a relative rating approach, which highlighted the differences between them and suggested guidelines for their improvement. The feedback evaluation procedure proposed could facilitate the selection and improvement of haptic feedback strategies prior to clinical testing.
AbstractList Nowadays, lower-limb prostheses are reaching real-world usability especially on ground-level walking. However, some key tasks such as stair walking are still quite demanding. Providing haptic feedback about the foot placement on the steps might reduce the cognitive load of the task, compensating for increased dependency on vision and lessen the risk of falling. Experiments on intact subjects can be useful to define the feedback strategies prior to clinical trials, but effective methods to assess the efficacy of the strategies are few and usually rely on the emulation of the disability condition. The present study reports on the design and testing of a wearable haptic feedback system in a protocol involving intact subjects to assess candidate strategies to be adopted in clinical trials. The system integrated a sensorized insole wirelessly connected to a textile waist belt equipped with three vibrating motors. Three stimulation strategies for mapping the insole pressure data to vibrotactile feedback were implemented and compared in terms of intuitiveness and comfort perceived during level and stair walking. The strategies were ranked using a relative rating approach, which highlighted the differences between them and suggested guidelines for their improvement. The feedback evaluation procedure proposed could facilitate the selection and improvement of haptic feedback strategies prior to clinical testing.
Audience Academic
Author De Luca, Daniela
Vitiello, Nicola
Prasanna, Sahana
Spigler, Giacomo
Cesini, Ilaria
D’Abbraccio, Jessica
Mazzoni, Alberto
Oddo, Calogero Maria
Dell’Agnello, Filippo
Crea, Simona
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Snippet Nowadays, lower-limb prostheses are reaching real-world usability especially on ground-level walking. However, some key tasks such as stair walking are still...
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SubjectTerms Amputation
Artificial limbs
Experiments
Feedback
Haptics
Haptics technology
Innovations
Insoles
Medical research
Medicine, Experimental
Phase transitions
Pressure distribution
Prostheses
Self-help devices for the disabled
Walking
Wearable technology
Title Assessment of Intuitiveness and Comfort of Wearable Haptic Feedback Strategies for Assisting Level and Stair Walking
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