Recording Neural Spikes Using Wireless Neurosensing System

Abstract

A wireless neurosensing system (WiNS) adapted with a novel impedance matching network is presented and validated. This system is used in vivo to record for the first time spontaneous neural unit activity from the hippocampus of a Wistar rat. These extracellular spikes offer valuable information. However, they are challenging to observe, even more so with previously reported neurosensing systems due to impedance mismatches with the required neural probes. The notable result demonstrated here employed (a) recently proposed technique for passive impedance matching, and (b) newly explored impedance reducing electrochemical probe coating method. The proposed technology has revolutionary potential in neurological research, particularly in epilepsy studies.