Miniaturized Energy-Efficient Integrated Neural Interfaces Chul Kim - - PowerPoint PPT Presentation

miniaturized energy efficient integrated neural interfaces
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Miniaturized Energy-Efficient Integrated Neural Interfaces Chul Kim - - PowerPoint PPT Presentation

Miniaturized Energy-Efficient Integrated Neural Interfaces Chul Kim Department of Bio and Brain Engineering KAIST Microelectrocorticography ( ECoG) Flexible Modular Array Emerging ECoG technologies - High spatiotemporal resolution


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Miniaturized Energy-Efficient Integrated Neural Interfaces

Chul Kim Department 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

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μ

Flexible Array Modular

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ENIAC:

Encapsulated Neural Interfacing and Acquisition Chip

No external components

  • r wires

CICC2017, JSSC2018b, JSSC2018c, JSSC2017, VLSI2015a, VLSI2016, ProcIEEE2017, BioCAS2017

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Neural Recording ADC – State-of-the-Art

Large Gain Max range

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Neural Recording ADC – Improvements

ADC-Direct Front-End

Max range

JSSC2018b

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Neural Recording ADC – Micrograph

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ISSCC2018

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ISSCC2018, JSSC2018b

Neural Recording ADC – in vivo tests

LFPs in marmoset non-human primate

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ISSCC2018, JSSC2018b

Neural Recording ADC – in vivo tests

LFPs in marmoset non-human primate

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Collaboration

Scalp Skull Dura mater Arachnoid Pia mater

Outer skull table Inner skull table

Cortex CSF Diploe

Flexible Array “Modular” µECoG Implants

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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.