Live Demo: Reconfigurable Low-noise Multichannel Amplifier for Neurochemical Recording

We demonstrate a novel custom designed multichannel amplifier for simultaneous electrical and chemical neural signal recording. The demonstration platform includes the chip, a dedicated printed circuit board and a Graphical User Interface (GUI). The amplifiers are low-noise, low-power, based on switching bias technique for reducing the flicker noise. This allows for much improved sensitivity for both chemical and low-frequency electrical signals. The demonstration is based on externally generated signals derived from our experiments on vagus nerve and uses a Data Acquisition (DAQ) instrumentation, which also outputs a broad spectrum signal to aid the visitor's experience. The GUI allows interaction with the amplifiers and adjustment of parameters such as switching frequency, demonstrating the implemented technique which is a physics driven fundamental approach to noise suppression.