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arXiv · 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
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Abstract

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.

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Dongjin Seo, Jose M. Carmena, Jan M. Rabaey, Elad Alon, Michel M. Maharbiz. 2013-07-08. Neural Dust: An Ultrasonic, Low Power Solution for Chronic Brain-Machine Interfaces. https://arxiv.org/abs/1307.2196

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