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Neural Dust Sprinkling Opens Novel Avenues to Electroceuticals

By Parul Gupta April 21, 2008

Supervising electronic signals from nerves and muscles has become simpler with a 1x1x3 mm sensor that can be embedded in any part of the body, powered and analysed by ultrasound. With advance miniaturization, such sensors could substitute brain electrode wired via the skull to regulate prosthetics, but also enable real-time supervision of muscle and nerve oxygen, metabolite or activity levels. It could be utilized to encourage nerves or muscles, for instance, to treat epilepsy.

The Berkeley engineers, from the University of California, have prepared the very first dust-sized, wireless instruments that can be embedded in any part of the body, tending close to the day when a gadget like Fitbit could supervise internal organs, nerves, and muscles in real-time.

Because of such unique feature of this technology, it opens doors to ‘electro-cuticles’ to rectify disorders like epilepsy or to boost the immune system or reduce inflammation. The neural dust that the research team embedded in the peripheral nerves and muscles of rats is different in that ultrasound is utilized both to read and power the measurements. Ultrasound technology is already improved for the use of hospital, and the ultrasound vibrations can enter in almost every part of the body, disclose the researchers.

“It is my assumption that the long-term prospects for neural dust are not only within the brain and nerves but much extensive,” says Michel Maharbiz, an associate lecturer of electronic engineering and computer sciences and a leading author of the study. “With easy access to in-body telemetry has never been feasible because there has been no technique to place something super-small super deep. But now I can consider a speck of nothing and place it next to an organ or nerve, your GI muscle or tract and analyse the data.”

Neuroscientist Jose Carmena, a lecturer of electronic engineering and computer sciences and an associate of the Helen Wills Neuroscience Institute and their team will illustrate their findings in the upcoming issue.

The researchers have already reduced the size of the sensors to 1 millimeter cube, which is equivalent to the size of a large sand or grain – contain a piezoelectric crystal that transforms ultrasound vibrations from external body into electricity to power a small, on-board transistor that is in touch with a muscle or nerve fibre. A voltage boosted in the fibre transforms the vibration and circuit of the crystal that alters the echo identified by the ultrasound receiver, typically the similar gadget that creates the vibrations. The simple change, called backscatter, enables them to analyse the voltage.

“Ultrasound is much more effective when you are targeting gadgets that are on the scale of a millimetre or tiny and that are incorporated deep inside the body.” SEO says, “you can avail a huge amount of power into it and a highly effective transmission of communication and energy when utilizing ultrasound as opposed to electromagnetic waves, which has been the vital technique for wirelessly transmitting power to small implants.” With such a minimally invasive, reliable and advance technology in your body, this technique could become an entire gamut of applications, things that presently do not even exist,” says Carmena.


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