Improved Probes for Fully-Passive Wireless Recording of Neural Activation

To address the need for continuous and localized brain electrical activity recordings, implantable neurosensing systems are often used. However, current systems involve highly-invasive procedures that can interrupt day-to-day activities. This paper presents an approach for developing a device that can be used to obtain neural data during normal activity and without hindering the quality of life. In this paper, for the first time, we present the design and application of improved neural probes for a fully-passive wireless brain implant. The integration of these neural probes to the neurosensing system results in enhanced impedance matching capable of sensing neural signals as low as 15 μVpp and improve the RF sensitivity to ~ -135 dBm. As such, all neural activity can be recorded.