Result of local stimulation in brain What happens when we stimulate a brain in local regions? Some possibilities: 


We may trigger an action without the subject's awareness of the action;
We can trigger an action in a subject, but we cannot trigger a subject's will to perform this action;
We can't trigger an action without awareness of subject;
We cannot trigger an action without awareness of subject to his own action;


What are the results??

What I felt is 2, 4 are correct options because when some BMI devices are used subject is forcefully made to make a move. Here we are not changing his will to move but he is aware that he is moving.
You should check out the article on Wikipedia: https://en.wikipedia.org/wiki/Neuroscience_of_free_will#Other_related_phenomena

Though there is still some controversy surrounding some of the experiments, the overall evidence suggests that it's possible to trigger action without awareness, it's possible to manipulate the perception of intention (will) to action, and it's also possible to do both.


  In one study, directly stimulating the pre-SMA caused volunteers to
  report a feeling of intention, and sufficient stimulation of that same
  area caused physical movement.[35] In a similar study, it was found
  that people with no visual awareness of their body can have their
  limbs be made to move without having any awareness of this movement,
  by stimulating premotor brain regions.[60] When their parietal
  cortices were stimulated, they reported an urge (intention) to move a
  specific limb (that they wanted to do so). Furthermore, stronger
  stimulation of the parietal cortex resulted in the illusion of having
  moved without having done so.