In vivo recording of visually evoked potentials with novel full diamond ECoG implants
At a Glance
Section titled âAt a Glanceâ| Metadata | Details |
|---|---|
| Publication Date | 2024-06-24 |
| Journal | Diamond and Related Materials |
| Authors | F.C. Wilfinger, J.M. Zhang, Diep Nguyen, Julie DĂŠgardin, P. Bergonzo |
| Institutions | Centre National de la Recherche Scientifique, Laboratoire dâĂŠlectronique, systèmes de communication et microsystèmes |
| Citations | 1 |
Abstract
Section titled âAbstractâImplantable neuroprosthetic devices such as electrocorticography (ECoG) and intracortical microelectrodes have the potential to restore neurological functions in disabled individuals. They constitute the direct interface with the body and require long term efficiency. We propose an ultra-thin diamond-based implant to tackle challenges related with long term implantation, and demonstrate its functionality on rodents. Here we take advantage of thin-film diamond to generate not only the electrodes but also the thin passivation foil, leading to a full thin film diamond EcoG. Implants were fabricated based on boron-doped diamond (BDD) electrodes connected through titanium nitride (TiN) conductive tracks, all being encapsulated in intrinsic diamond. A complete electrochemical characterization proved that the TiN tracks were well embedded inside diamond and the efficiency of the BDD electrodes. Functionality of the ECoG device was also provided by the recording of classic visual evoked potentials (VEPs) on wild-type mice and rats. This thin film diamond technology successfully responds to long term issues (linked with electrode material or device packaging) and holds the potential to inspire and pave the way for future generations of various electrode arrays.
Tech Support
Section titled âTech SupportâOriginal Source
Section titled âOriginal SourceâReferences
Section titled âReferencesâ- 2017 - Diamond devices for high acuity prosthetic vision [Crossref]
- 2021 - Recent advancement of electrocorticography (ECoG) electrodes for chronic neural recording/stimulation
- 2019 - Fabrication of an all-diamond microelectrode using a chromium mask [Crossref]
- 2019 - An exoskeleton controlled by an epidural wireless brain-machine interface in a tetraplegic patient: a proof-of-concept demonstration [Crossref]
- 2014 - Distinctive glial and neuronal interfacing on nanocrystal- line diamond Egles C, ed [Crossref]
- 2015 - Synthetic 3D diamond-based electrodes for flexible retinal neuroprostheses: model, production and in vivo biocompatibility [Crossref]
- 2020 - All-printed Electrocorticography array for in vivo neural recordings [Crossref]
- 2021 - Emerging materials and technologies with applications in flexible neural implants: a comprehensive review of current issues with neural devices [Crossref]
- 2001 - Implantation of silicon chip microphotodiode arrays into the cat subretinal space [Crossref]
- 2008 - Neural stimulation and recording electrodes [Crossref]