A 2.048 Mb/s full-duplex free-space optical transceiver IC for a real-time in vivo neurofeedback mouse experiment under social interaction

We report the first free-space optical transceiver IC for social psychological neurofeedback experiments with multiple mice. The proposed IC, which includes a neural stimulator and neural recorder, is embedded in the head-mounted module of a mouse and communicates with an optical base station by using a mandatory 615 nm visible behavior tracking LED to save power. The proposed IC fabricated in a 0.18 µm BCDMOS process consumes 90 µW for optical TX while achieving a 2.048 Mb/s transmission rate.