Figure 4.

Example of custom-fitted implant for an animal with discontinuous skull surface. Left, The skull contains three holes from previous craniotomies and implants. Right, A headpost was designed and custom-fitted taking the anterior hole into account by designing the most posterior leg as a cover for the hole. An extended chamber with inlays for the use with wireless headstages was matched to the skull curvature around two large preexisting craniotomies. Black rectangles on the cortical surface mark the planned microelectrode array positions.