A Passive Multi-Channel Brain Implant for Wireless Neuropotential Monitoring

A passive, wireless and batteryless multi-channel (8 channels) brain implant is proposed with the following unique features: a) 28 times better sensitivity, b) 2 times smaller footprint, and c) scalability to 100s or even 1000s of channels. To verify the operation within biological tissues, in-vitro measurements are presented using fresh pig skin. Experimental results show that the proposed neuro-sensing system exhibits 20 μV
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sensivity at all channels. That is, it can record any signal generated by the human brain. Overall, this technology brings forward transformational opportunities for patients with epilepsy, Alzheimer's and Parkinson's disease.