Spatial memory in nonhuman primates implanted with the subdural pharmacotherapy device.

•Spatial memory performance of macaque monkeys was tested over 6 months.•Tests were done before and after subdural pharmacotherapy device placement.•The implantation site was over the right parietal/frontal cortex.•The device periodically delivered saline and subsequently 1.0mM muscimol.•Neither implantation nor saline or muscimol delivery affected spatial memory.