Evaluation of sensation evoked by electrocutaneous stimulation on forearm in nondisabled subjects
TLDR
Tactile perception was found to be induced more easily on the median and ulnar aspect than the dorsal and radial aspect of the forearm and the results may help improve users' acceptance of hand prostheses.Abstract:
Few studies are available in the literature on the sensations artificially created by dual-channel electrocutaneous stimulation. This study assessed the effect of a set of selected stimulation parameters on the sensations evoked by single- or dual-channel electrocutaneous stimulation. The investigated parameters included the stimulation site, the number of pulses, the number of stimulating channels (single- vs dual-channel), and the interleaved time between two channels. The modality, quality, location, and magnitude of the sensations were evaluated when the stimulations were applied on the forearm skin in 16 nondisabled subjects. Tactile perception was found to be induced more easily on the median and ulnar aspect than the dorsal and radial aspect of the forearm. Stimulation site significantly affected the magnitude of the sensation (p < 0.01). Dual-channel stimulation significantly increased the sensation magnitude (p < 0.05) only when the two electrodes were positioned closely. Moreover, a higher number of pulses evoked a movement perception more frequently and the interleaved time showed no significant effect on the magnitude of the sensation. The findings are expected to be useful for sensory substitution and augmentation applications. The results may also help improve users' acceptance of hand prostheses.read more
Citations
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Journal ArticleDOI
Characterization of evoked tactile sensation in forearm amputees with transcutaneous electrical nerve stimulation.
TL;DR: The stable PFM and sensory thresholds of ETS are desirable for a non-invasive neural interface that can feed back finger-specific tactile information from the prosthetic hand to forearm amputees.
Journal ArticleDOI
Learning of Artificial Sensation Through Long-Term Home Use of a Sensory-Enabled Prosthesis.
Ivana Cuberovic,Anisha Gill,Linda Resnik,Linda Resnik,Dustin J. Tyler,Dustin J. Tyler,Emily L. Graczyk,Emily L. Graczyk +7 more
TL;DR: This study provides the first evidence that artificial somatosensation can undergo similar learning processes as intact sensation and highlights the importance of sensory restoration in prostheses.
Journal ArticleDOI
HyVE: Hybrid Vibro-Electrotactile Stimulation for Sensory Feedback and Substitution in Rehabilitation
TL;DR: The results demonstrated that the subjects were able to discriminate the features of the two modalities within the hybrid stimulus, and that the cross-modality interaction was limited enough to allow better transmission of discrete information (messages) using hybrid versus single modality coding.
Journal ArticleDOI
A System for Electrotactile Feedback Using Electronic Skin and Flexible Matrix Electrodes: Experimental Evaluation
TL;DR: The experiments demonstrated that the system successfully translated the mechanical interaction into the moving electrotactile profiles, which the subjects could recognize with a good performance and identify the movement direction with a high confidence.
Journal ArticleDOI
Neural feedback strategies to improve grasping coordination in neuromusculoskeletal prostheses
Enzo Mastinu,Leonard F. Engels,Francesco Clemente,Mariama Dione,Paolo Sassu,Oskar C. Aszmann,Rickard Brånemark,Rickard Brånemark,Bo Håkansson,Marco Controzzi,Johan Wessberg,Christian Cipriani,Max Ortiz-Catalan +12 more
TL;DR: The findings confirm, in line with the neuroscientific literature, that somatosensory feedback is necessary for motor coordination during grasping and indicates that feedback is more relevant under uncertainty, and its effectiveness can be influenced by the selected neuromodulation paradigm and arguably also the prior experience of the prosthesis user.
References
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