For MRI, we anesthetized monkey F and P with ketamine and maintained general anesthesia with isoflurane. We head fixed the monkeys using a MRI-compatible stereotaxic frame and scanned (Siemens, 3T) for anatomical MRI. We generated a whole brain model for each monkey using Brainsight (Rogue Research) and 3-D printed a custom matrix for the brain with cutting guide set every 1 mm.
