A programmable neural measurement system for spikes and local field potentials

This paper presents a configurable system measuring and pre-processing neurological data to be transmitted over a wireless RF datalink (the datalink itself is not part of this work). The system is capable of measuring spikes and/or local field potentials of up to 128 electrodes with a variable resolution up to 16 Bit at a variable sample rate up to 10 kHz consuming roughly 70 mW. It represents the first step of the development of an implantable neurological measurement unit. In this paper the system-architecture, the digital system and the FPGA implementation of the developed neural measurement system are presented.