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UC Berkeley Researchers Propose "Neural Dust" Brain-Computer Interface

July 17th, 2013 Scott Jung News

brain-interface-dustAdvances in brain imaging and neural activity detection technologies, such as fMRI and EEG, have allowed us to learn much about the brain over the years, and neural implants have offered the ability to stimulate and all but control activity in certain parts of the brain. However, these brain-computer interfaces are limited in that they offer finite resolution, are hard to apply to many brain regions, and usually can only stay directly connected to the brain for a short period of time due to their invasiveness.

Engineers at the University of California, Berkeley, have proposed an ultra-small, ultrasound-based neural recording system that they call “neural dust”. Neural dust consists of thousands of sensors that are 10-100 micrometers in size containing CMOS circuits and sensors to detect and report local extracellular electrophysiological data. The neural dust is powered by ultrasonic waves via a transducer that is implanted just below the dura. The sub-dural unit also interrogates the neural dust and sends information to another receiver outside the body.

If neural dust becomes a reality, it could give us a much higher resolution look at what is going on inside the brain, as it will be able to record from thousands of sites within the brain, in contrast to the hundreds of channels that current technology allows. Moreover, because these tiny sensors are literally the size of dust particles, they could cause far less damage to the surrounding brain tissue and could stay embedded in the brain for long periods of time.

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

(hat tip: Gizmodo)

Scott Jung

Scott Jung (@scottjung) is a Silicon Valley-based medical and health technology reporter and advocate, with a focus on wearables, telemedicine, and health technology in emerging countries. He has represented Medgadget at CES and Digital Health Summit, TEDMED, Stanford Medicine X, and SXSW. Always on the lookout for innovative medical technology worldwide, Scott has been invited to visit Colombia, Poland, and many other countries around the world to share how medtech is enriching the lives of its people. Scott holds a B.S. degree in Biomedical Engineering from the University of Southern California and an M.S. degree in Medical Product Development Management from San José State University. Scott is always looking for the next big thing in medical technology and digital health. Interested in helping him transform lives? Get in touch with him at http://scottju.ng

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