Recruitment Selectivity of Single and Pairs of Transverse, Intrafascicular, Multi-channel Electrodes (TIME) in the Pig Median Nerve

Abstract : When applied in the rat model the Transverse Intrafascicular Multi-channel Electrode (TIME) showed selective nerve fascicle recruitment. But results from the larger and poly-fasicular median nerves in pigs indicated that a single TIME could not reach the entire nerve and could only selectively recruit a subset of the nerve fascicles. The use of multiple TIME structures could offer a means to achieve highly selective fascicular stimulation while reaching a larger percentage of the fascicles in the nerve. This work investigates this approach using pairs of TIMEs implanted in the median nerves of anesthesized pigs (n=6). TIME structures were implanted at different angles relative to each other or in parallel with one another. Electrical stimuli was passed through each contact of each TIME and the resulting electromyograms were recorded from seven muscles innervated by the median nerve. The ability to recruit these muscles was used to assess the stimulation selectivity of each contact using a selectivity index comparing the root-mean-square of the the evoked EMG of individual muscles. Results showed a significant increase in the selectivity index, when using two TIMEs compared to one. The optimal improvement was observed when TIMEs were placed in parallel to each other in such a way that they interfaced non-overlapping nerve regions.
Type de document :
Communication dans un congrès
IFESS: International Functional Electrical Stimulation Society, Sep 2012, Banff, Canada. 17th International Conference of Functional Electrical Stimulation, 2012, 〈http://ifess2012.com/〉
Liste complète des métadonnées

Littérature citée [10 références]  Voir  Masquer  Télécharger

https://hal-lirmm.ccsd.cnrs.fr/lirmm-00723838
Contributeur : Paweł Maciejasz <>
Soumis le : dimanche 3 juillet 2016 - 11:40:33
Dernière modification le : jeudi 11 janvier 2018 - 16:21:49
Document(s) archivé(s) le : mardi 4 octobre 2016 - 10:42:19

Fichier

86_2012-07-16_13-47-12_krharre...
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : lirmm-00723838, version 1

Citation

Kristian Rauhe Harreby, Aritra Kundu, Bo Geng, Paweł Maciejasz, David Guiraud, et al.. Recruitment Selectivity of Single and Pairs of Transverse, Intrafascicular, Multi-channel Electrodes (TIME) in the Pig Median Nerve. IFESS: International Functional Electrical Stimulation Society, Sep 2012, Banff, Canada. 17th International Conference of Functional Electrical Stimulation, 2012, 〈http://ifess2012.com/〉. 〈lirmm-00723838〉

Partager

Métriques

Consultations de la notice

392

Téléchargements de fichiers

163