Although scientists can see parts of the brain respond to brain imaging and they can alter a person's thoughts by means of chemicals or surgery, they don't understand the exact moment a conscious thought is formed. In addition, scientists ponder if there is a difference between conscious thoughts (such as decision making) and unconscious thoughts (such as breathing). Studies have found that brain scanners can predict a person's conscious decisions sooner than the person himself.
What is the future of neurotechnology?
Answered by Mikhail Shapiro
Is the brain hardwired to enjoy music?
Answered by Susan Sherwood and Discovery Channel
Can you think pain away?
Answered by Discovery Channel