The monkey was shown being "shaped", that is, being encouraged to perform certain tasks by having food and water withheld, in advance of having the symptoms of Parkinson's disease induced. Electrodes were implanted in his brain to test the effects of deep brain stimulation on the Parkinsonian symptoms and on his ability to perform the tasks. He will be destroyed at the end of the experiment, which could continue for several years.
The monkey was subjected to "conditioning," which involved withholding food and water in anticipation of inducing Parkinson's disease symptoms, followed by brain stimulation experiments using electrodes implanted in his brain. The experiment will end with the animal being euthanized after several years.