Fig 1. The chronic implant.

Schematic of the implantation (for 2-shank CM16 NeuroNexus probe) and the head plate (the hole in the head plate is shifted to one side, to reside over one hemisphere). The total weight of the head plate, 16-channel probe and the cement used for attachment to the skull is ~2 gr (2.5 gr if a bigger 32-channel probe is used).