An Energy-Efficient Optically-Enhanced Highly-Linear Implantable Wirelessly-Powered Bidirectional Optogenetic Neuro-Stimulator

This paper presents an energy-efficient mm-scale self-contained bidirectional optogenetic neuro-stimulator, which employs a novel highly-linear μLED driving circuit architecture as well as inkjet-printed custom-designed optical μlenses for light directivity enhancement. The proposed current-mode μLE...

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Bibliographic Details
Published in:IEEE transactions on biomedical circuits and systems 2020-12, Vol.14 (6), p.1274-1286
Main Authors: Yousefi, Tayebeh, Taghadosi, Mansour, Dabbaghian, Alireza, Siu, Ryan, Grau, Gerd, Zoidl, Georg, Kassiri, Hossein
Format: Article
Language:English
Subjects:
brain neural interface
Circuit design
Circuits
Coils
current-mode driver
Directivity
electrophysiological recording
Energy
Energy conversion
Energy conversion efficiency
Energy efficiency
Implantable optogenetic neuro-stimulator
Implants
in-vitro
Ink jet printing
inkjet printing
lens
Lenses
light directivity
Light emitting diodes
Linear control
linear current amplifier
Neurostimulation
Power management
Recording
Spatial resolution
Stimulators
wireless
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Summary:This paper presents an energy-efficient mm-scale self-contained bidirectional optogenetic neuro-stimulator, which employs a novel highly-linear μLED driving circuit architecture as well as inkjet-printed custom-designed optical μlenses for light directivity enhancement. The proposed current-mode μLED driver performs linear control of optical stimulation for the entire target range (
ISSN:1932-4545
1940-9990
DOI:10.1109/TBCAS.2020.3026937