Recording Electrical Brain Activity with Novel Stretchable Electrodes Based on Supersonic Cluster Beam Implantation Nanotechnology on Conformable Polymers.
brain
field potentials
recording electrodes
supersonic cluster beam implantation
Journal
International journal of nanomedicine
ISSN: 1178-2013
Titre abrégé: Int J Nanomedicine
Pays: New Zealand
ID NLM: 101263847
Informations de publication
Date de publication:
2019
2019
Historique:
received:
23
07
2019
accepted:
25
09
2019
entrez:
11
1
2020
pubmed:
11
1
2020
medline:
14
3
2020
Statut:
epublish
Résumé
Multielectrodes are implanted in central and peripheral nervous systems for rehabilitation and diagnostic purposes. The physical resistance of intracranial devices to mechanical stress is critical and fractures or electrode displacement may occur. We describe here a new recording device with stretchable properties based on Supersonic Cluster Beam Implantation (SCBI) technology with high mechanical adaptability to displacement and movement. The capability of SCBI-based multichannel electrodes to record brain electrical activity was compared to glass/silicon microelectrodes in acute in vitro experiments on the isolated guinea pig brain preparation. Field potentials and power frequency analysis demonstrated equal recording features for SCBI and standard electrodes. Chronic in vivo epidural implantation of the SCBI electrodes confirmed excellent long-term recording properties in comparison to standard EEG metal electrodes. Tissue biocompatibility was demonstrated by neuropathological evaluation of the brain tissue 2 months after the implantation of the devices in the subarachnoid space. We confirm the biocompatibility of novel SCBI-based stretchable electrode devices and demonstrate their suitability for recording electrical brain activity in pre-clinical settings.
Sections du résumé
BACKGROUND
BACKGROUND
Multielectrodes are implanted in central and peripheral nervous systems for rehabilitation and diagnostic purposes. The physical resistance of intracranial devices to mechanical stress is critical and fractures or electrode displacement may occur. We describe here a new recording device with stretchable properties based on Supersonic Cluster Beam Implantation (SCBI) technology with high mechanical adaptability to displacement and movement.
RESULTS
RESULTS
The capability of SCBI-based multichannel electrodes to record brain electrical activity was compared to glass/silicon microelectrodes in acute in vitro experiments on the isolated guinea pig brain preparation. Field potentials and power frequency analysis demonstrated equal recording features for SCBI and standard electrodes. Chronic in vivo epidural implantation of the SCBI electrodes confirmed excellent long-term recording properties in comparison to standard EEG metal electrodes. Tissue biocompatibility was demonstrated by neuropathological evaluation of the brain tissue 2 months after the implantation of the devices in the subarachnoid space.
CONCLUSION
CONCLUSIONS
We confirm the biocompatibility of novel SCBI-based stretchable electrode devices and demonstrate their suitability for recording electrical brain activity in pre-clinical settings.
Identifiants
pubmed: 31920304
doi: 10.2147/IJN.S224243
pii: 224243
pmc: PMC6935312
doi:
Substances chimiques
Polymers
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
10079-10089Informations de copyright
© 2019 Gnatkovsky et al.
Déclaration de conflit d'intérêts
WISE Srl is a Medical Device Company involved in electrodes development for neuromonitoring and neuromodulation. Alessandro Antonini, Laura Spreafico, Matteo Saini, and Sandro Ferrari are employees in WISE Srl. Dr Sandro Ferrari reports a patent PCT/EP2011/054903 issued. The authors report no other conflicts of interest in this work.
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