A Wearable Real-Time System for Simultaneous Wireless Power and Data Transmission to Cortical Visual Prosthesis.
Details
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State: Public
Version: Final published version
License: All rights reserved
UNIL restricted access
State: Public
Version: Final published version
License: All rights reserved
Serval ID
serval:BIB_B1C0EF1325BE
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
A Wearable Real-Time System for Simultaneous Wireless Power and Data Transmission to Cortical Visual Prosthesis.
Journal
IEEE transactions on biomedical circuits and systems
ISSN
1940-9990 (Electronic)
ISSN-L
1932-4545
Publication state
Published
Issued date
06/2024
Peer-reviewed
Oui
Volume
18
Number
3
Pages
580-591
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Publication Status: ppublish
Abstract
Wireless, miniaturised and distributed neural interfaces are emerging neurotechnologies. Although extensive research efforts contribute to their technological advancement, the need for real-time systems enabling simultaneous wireless information and power transfer toward distributed neural implants remains crucial. Here we present a complete wearable system including a software for real-time image capturing, processing and digital data transfer; an hardware for high radiofrequency generation and modulation via amplitude shift keying; and a 3-coil inductive link adapt to operate with multiple miniaturised receivers. The system operates in real-time with a maximum frame rate of 20 Hz, reconstructing each frame with a matrix of 32 × 32 pixels. The device generates a carrier frequency of 433.92 MHz. It transmits the highest power of 32 dBm with a data rate of 6 Mbps and a variable modulation index as low as 8 %, thus potentially enabling wireless communication with 1024 miniaturised and distributed intracortical microstimulators. The system is primarily conceived as an external wearable device for distributed cortical visual prosthesis covering a visual field of 20 <sup>°</sup> . At the same time, it is modular and versatile, being suitable for multiple applications requiring simultaneous wireless information and power transfer to large-scale neural interfaces.
Keywords
Wireless Technology/instrumentation, Wearable Electronic Devices, Humans, Visual Prosthesis, Signal Processing, Computer-Assisted/instrumentation, Equipment Design, Electric Power Supplies
Pubmed
Web of science
Create date
21/03/2024 13:04
Last modification date
27/07/2024 6:00