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Related Experiment Video

Updated: Mar 6, 2026

Direct-current Stimulation and Multi-electrode Array Recording of Seizure-like Activity in Mice Brain Slice Preparation
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A distributed current stimulator ASIC for high density neural stimulation.

Jeong Hoan Park, Chaebin Kim, Seung-Hee Ahn

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |March 9, 2017
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces a novel distributed neural stimulator using multiple ASICs per electrode for high-density arrays. This design simplifies wiring and enhances efficiency for neural stimulation applications.

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    Area of Science:

    • Biomedical Engineering
    • Neurotechnology
    • Integrated Circuit Design

    Background:

    • Traditional neural stimulators face wiring complexity with increasing electrode density.
    • High-density electrode arrays are crucial for advanced neural interfaces.

    Purpose of the Study:

    • To present a novel distributed neural stimulator scheme.
    • To simplify wiring and improve efficiency in high-density neural stimulation.

    Main Methods:

    • Developed a distributed architecture with multiple Application-Specific Integrated Circuits (ASICs) per electrode.
    • Implemented a shared data bus within each ASIC for independent channel control.
    • Integrated current steering for pseudo-channel stimulation to enhance channel count and efficiency.

    Main Results:

    • Fabricated a chip with an area of 0.3 mm² using a 0.18 μm BCDMOS process.
    • Demonstrated simplified wiring independent of the total channel number.
    • Achieved efficient chip area utilization through current steering.

    Conclusions:

    • The distributed neural stimulator architecture effectively addresses wiring complexity in high-density electrode arrays.
    • The novel ASIC design enhances channel efficiency and reduces overall chip area.
    • Bench-top tests validate the performance of the developed neural stimulator.