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  4. Intraneural stimulation elicits discrimination of textural features by artificial fingertip in intact and amputee humans
 
research article

Intraneural stimulation elicits discrimination of textural features by artificial fingertip in intact and amputee humans

Oddo, Calogero Maria
•
Raspopovic, Stanisa  
•
Artoni, Fiorenzo  
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2016
eLIFE

Restoration of touch after hand amputation is a desirable feature of ideal prostheses. Here, we show that texture discrimination can be artificially provided in human subjects by implementing a neuromorphic real-time mechano-neuro-transduction (MNT), which emulates to some extent the firing dynamics of SA1 cutaneous afferents. The MNT process was used to modulate the temporal pattern of electrical spikes delivered to the human median nerve via percutaneous microstimulation in four intact subjects and via implanted intrafascicular stimulation in one transradial amputee. Both approaches allowed the subjects to reliably discriminate spatial coarseness of surfaces as confirmed also by a hybrid neural model of the median nerve. Moreover, MNT-evoked EEG activity showed physiologically plausible responses that were superimposable in time and topography to the ones elicited by a natural mechanical tactile stimulation. These findings can open up novel opportunities for sensory restoration in the next generation of neuro-prosthetic hands.

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Type
research article
DOI
10.7554/eLife.09148
Web of Science ID

WOS:000371892700001

Author(s)
Oddo, Calogero Maria
Raspopovic, Stanisa  
Artoni, Fiorenzo  
Mazzoni, Alberto
Spigler, Giacomo
Petrini, Francesco  
Giambattistelli, Federica
Vecchio, Fabrizio
Miraglia, Francesca
Zollo, Loredana
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Date Issued

2016

Publisher

Elife Sciences Publications Ltd

Published in
eLIFE
Volume

5

Article Number

e09148

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
TNE  
Available on Infoscience
July 19, 2016
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/127429
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