Figure 8.
(a) Probe testing in saline solution attached to headstage, showing the back-end FPGA board in the background; (b) detailed view of probe and headstage connected to the mezzanine PCB (printed circuit board) through the flexible dual micro coaxial cable; the mezzanine board allows for connection of external battery for low noise and digital synchronization signals; (c) schematic display of probe implanted into animal.