dc.contributor.author | Cinelli, Ilaria | |
dc.contributor.author | Destrade, Michel | |
dc.contributor.author | Duffy, Maeve | |
dc.contributor.author | McHugh, Peter | |
dc.date.accessioned | 2018-12-12T11:57:20Z | |
dc.date.available | 2018-12-12T11:57:20Z | |
dc.date.issued | 2017-11-21 | |
dc.identifier.citation | Cinelli, I., Destrade, M., Duffy, M., & McHugh, P. (2018). Electro-mechanical response of a 3D nerve bundle model to mechanical loads leading to axonal injury. International Journal for Numerical Methods in Biomedical Engineering, 34(3), e2942, doi:10.1002/cnm.2942 | en_IE |
dc.identifier.issn | 2040-7947 | |
dc.identifier.uri | http://hdl.handle.net/10379/14691 | |
dc.description.abstract | Traumatic brain injuries and damage are major causes of death and disability. We propose a 3D fully coupled electro-mechanical model of a nerve bundle to investigate the electrophysiological impairments due to trauma at the cellular level. The coupling is based on a thermal analogy of the neural electrical activity by using the finite element software Abaqus CAE 6.13-3. The model includes a real-time coupling, modulated threshold for spiking activation, and independent alteration of the electrical properties for each 3-layer fibre within a nerve bundle as a function of strain. Results of the coupled electro-mechanical model are validated with previously published experimental results of damaged axons. Here, the cases of compression and tension are simulated to induce (mild, moderate, and severe) damage at the nerve membrane of a nerve bundle, made of 4 fibres. Changes in strain, stress distribution, and neural activity are investigated for myelinated and unmyelinated nerve fibres, by considering the cases of an intact and of a traumatised nerve membrane. A fully coupled electro-mechanical modelling approach is established to provide insights into crucial aspects of neural activity at the cellular level due to traumatic brain injury. One of the key findings is the 3D distribution of residual stresses and strains at the membrane of each fibre due to mechanically induced electrophysiological impairments, and its impact on signal transmission. | en_IE |
dc.description.sponsorship | The authors gratefully acknowledge funding from the Galway University Foundation, the Biomechanics Research Centre, and the Power Electronics Research Centre, College of Engineering and Informatics, National University of Ireland Galway (NUIG) in Galway, Rep. of Ireland. | en_IE |
dc.format | application/pdf | en_IE |
dc.language.iso | en | en_IE |
dc.publisher | Wiley | en_IE |
dc.relation.ispartof | International Journal For Numerical Methods In Biomedical Engineering | en |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Ireland | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ | |
dc.subject | coupled electro-mechanical modelling | en_IE |
dc.subject | diffuse axonal injury | en_IE |
dc.subject | equivalences | en_IE |
dc.subject | finite element modelling | en_IE |
dc.subject | trauma | en_IE |
dc.subject | TRAUMATIC BRAIN-INJURY | en_IE |
dc.subject | SQUID GIANT-AXON | en_IE |
dc.subject | STRETCH-INJURY | en_IE |
dc.subject | STRAIN | en_IE |
dc.subject | COMPRESSION | en_IE |
dc.subject | MAGNITUDE | en_IE |
dc.subject | SYSTEM | en_IE |
dc.subject | DAMAGE | en_IE |
dc.title | Electro-mechanical response of a 3D nerve bundle model to mechanical loads leading to axonal injury | en_IE |
dc.type | Article | en_IE |
dc.date.updated | 2018-12-11T14:13:36Z | |
dc.identifier.doi | 10.1002/cnm.2942 | |
dc.local.publishedsource | https://doi.org/10.1002/cnm.2942 | en_IE |
dc.description.peer-reviewed | peer-reviewed | |
dc.contributor.funder | Galway University Foundation | en_IE |
dc.contributor.funder | College of Engineering and Informatics, National University of Ireland, Galway | en_IE |
dc.internal.rssid | 14062840 | |
dc.local.contact | Michel Destrade, Room Adb-1002, Áras De Brun, School Of Mathematics, Nui Galway. 2344 Email: michel.destrade@nuigalway.ie | |
dc.local.copyrightchecked | Yes | |
dc.local.version | SUBMITTED | |
nui.item.downloads | 248 | |