It is common practice in some techniques for putting in deep brain stimulator electrodes to keep patient’s awake to make sure the electrode is in the right place and giving good symptom relief. Likewise for parts of some surgeries for brain tumors you might have a patient awake to “map” their brain surrounding the tumor so as to not damage important parts that control things like movements or speech. You may ask patients to do certain tasks while they’re awake so that you can see if the stimulation is working or see if an area of the brain is involved in such a task. I don’t think I’ve ever heard of anyone playing the guitar during a surgery however.
Monday, May 27th 2013