I think it is <span> Biorobotics and robotics military applications. </span>
Based on the description, <span>this experiment is most likely an </span>aversive conditioning Experiment.
Aversive conditioning experiment is created to associate a substance/behavior that wanted to be eliminated with some negative stimuli (such as pain or nausea). This will train the brain to reject the existence of that substance/behavior in our body.
I believe the answer to your question is D.
I believe the answer is: <span>catecholamine
This hypothesis view that pyschological disorder is a direct result of relative decrease in catecholamine that could usually be found </span><span>at central adrenergic receptor sites because This reduction cause the function of hypothalamus part of our brain become significantly slower.</span>