miniaturized energy-efficient integrated neural interfaces · eniac: encapsulated neural...
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Miniaturized Energy-Efficient Integrated Neural Interfaces
Chul KimDepartment of Bio and Brain Engineering
KAIST
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Microelectrocorticography (µECoG)
Emerging µECoG technologies- High spatiotemporal resolution- Fully implantable
- Minimally invasive- Long-term monitoring
Slide 1
Emerging μECoG TechnologiesFlexibleArray Modular
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ENIAC:Encapsulated Neural Interfacing and Acquisition Chip
No external components or wires
CICC2017, JSSC2018b, JSSC2018c, JSSC2017, VLSI2015a, VLSI2016, ProcIEEE2017, BioCAS2017Slide 12
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Slide 3
Neural Recording ADC – State-of-the-Art
Large GainMax
range
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Slide 4
Neural Recording ADC – Improvements
ADC-Direct Front-End
Maxrange
JSSC2018b
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Neural Recording ADC – Micrograph
Slide 5ISSCC2018
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Slide 6ISSCC2018, JSSC2018b
Neural Recording ADC – in vivo testsLFPs in marmoset non-human primate
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Slide 7ISSCC2018, JSSC2018b
Neural Recording ADC – in vivo testsLFPs in marmoset non-human primate
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Collaboration
Scalp
Skull
Dura materArachnoid
Pia mater
Outer skull table
Inner skull table
Cortex
CSF
Diploe
Flexible Array “Modular” µECoG Implants
Slide 8
1 mm
1 mm
Joint proposal opportunities for µECoG systems working on freely moving subjects for next-generation brain imaging with:
1) < 1mV spatial resolution;2) > 1000 recording channels;3) > 100 stimulation channels; 4) > at least 24 hours operation time, and;5) coverage of entire brain.
Joint proposal opportunities for unobtrusive wireless energy-efficient brain-machine interface systems.