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  4. Biomimetic Intraneural Sensory Feedback Enhances Sensation Naturalness, Tactile Sensitivity, and Manual Dexterity in a Bidirectional Prosthesis
 
research article

Biomimetic Intraneural Sensory Feedback Enhances Sensation Naturalness, Tactile Sensitivity, and Manual Dexterity in a Bidirectional Prosthesis

Valle, Giacomo
•
Mazzoni, Alberto
•
Iberite, Francesco
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October 10, 2018
Neuron

Peripheral intraneural stimulation can provide tactile information to amputees. However, efforts are still necessary to identify encoding strategy eliciting percepts that are felt as both natural and effective for prosthesis control. Here we compared the naturalness and efficacy of different encoding strategies to deliver neural stimulation to trans-radial amputees implanted with intraneural electrodes. Biomimetic frequency modulation was perceived as more natural, while amplitude modulation enabled better performance in tasks requiring fine identification of the applied force. Notably, the optimal combination of naturalness and sensitivity of the tactile feedback can be achieved with "hybrid" encoding strategies based on simultaneous biomimetic frequency and amplitude neuromodulation. These strategies improved the gross manual dexterity of the subjects during functional task while maintaining high levels of manual accuracy. They also improved prosthesis embodiment, reducing abnormal phantom limb perceptions ("telescoping effect"). Hybrid strategies are able to provide highly sensitive and natural percepts and should be preferred.

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Type
research article
DOI
10.1016/j.neuron.2018.08.033
Web of Science ID

WOS:000446862000009

Author(s)
Valle, Giacomo
Mazzoni, Alberto
Iberite, Francesco
D'Anna, Edoardo  
Strauss, Ivo
Granata, Giuseppe
Controzzi, Marco
Clemente, Francesco
Rognini, Giulio  
Cipriani, Christian
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Date Issued

2018-10-10

Published in
Neuron
Volume

100

Issue

1

Start page

37

End page

45.e7

Subjects

Neurosciences

•

Neurosciences & Neurology

•

somatosensory feedback

•

population response

•

peripheral-nerve

•

rubber hand

•

amputees

•

touch

•

phantom

•

restoration

•

stimulation

•

embodiment

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
TNE  
LNCO  
NCCR-ROBOTICS  
Available on Infoscience
December 13, 2018
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/152089
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