[ExI] Neural Dust

[Anders Sandberg]

Some fun interface tech:

http://arxiv.org/abs/1307.2196

Neural Dust: An Ultrasonic, Low Power Solution for Chronic Brain-Machine 
Interfaces

Dongjin Seo, Jose M. Carmena, Jan M. Rabaey, Elad Alon, Michel M. Maharbiz

    A major hurdle in brain-machine interfaces (BMI) is the lack of an
    implantable neural interface system that remains viable for a
    lifetime. This paper explores the fundamental system design
    trade-offs and ultimate size, power, and bandwidth scaling limits of
    neural recording systems built from low-power CMOS circuitry coupled
    with ultrasonic power delivery and backscatter communication. In
    particular, we propose an ultra-miniature as well as extremely
    compliant system that enables massive scaling in the number of
    neural recordings from the brain while providing a path towards
    truly chronic BMI. These goals are achieved via two fundamental
    technology innovations: 1) thousands of 10 - 100 \mu m scale,
    free-floating, independent sensor nodes, or neural dust, that detect
    and report local extracellular electrophysiological data, and 2) a
    sub-cranial interrogator that establishes power and communication
    links with the neural dust.

-- 
Dr Anders Sandberg
Future of Humanity Institute
Oxford Martin School
Oxford University

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