http://arxiv.org/abs/1307.2196
Current Brain-computer interfaces offer finite resolution, are hard to apply to many brain regions, and can only stay directly connected to the brain for a short period of time due to their invasiveness. Berkeley researchers have proposed an ultra-small, ultrasound-based neural recording system called “neural dust”. It 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 interrogates the neural dust and sends information to another receiver outside the body.
This could provide a much higher resolution look inside the brain, as it will be able to record from thousands of sites, in contrast to the hundreds of channels allowed by current technology.
12 replies on ““Neural Dust” records from thousands of sites in the brain”
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