28 Feb '13, 3pm

Researchers develop fully implantable wireless brain sensor: "Another major challenge we encountered was to in...

The device, which could help people with severe paralysis control devices with their thoughts, contains a pill sized chip of electrodes implanted on the cortex which sends signals through electrical connections into a laser welded, hermetically sealed titanium 'can'. The can measures 2.2 x 1.65in and is 0.35in thick. It houses an entire signal processing system: a lithium ion battery, ultra low power ics designed for signal processing and conversion, wireless radio and infrared transmitters, and a copper coil for recharging. All the wireless and charging signals pass through an electromagnetically transparent sapphire window. The device, which uses less than 100milliwatts of power, transmits data at 24Mb/s via 3.2 and 3.8Ghz microwave frequencies to an external receiver. After a two hour charge, delivered wirelessly through the scalp via induction, it can operate for more ...

Full article: http://www.newelectronics.co.uk/electronics-news/ultra-sm...

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