Brain, as one of the most complicated part of the organs in human beings’ body, contains a lot of secrets which make human so special than other species. It also plays an essential role in our daily thought and reaction. If there is something wrong with the brain or people maybe called it as mental illness, they would need some treatment such as taking some drugs. According to the passage “ Who Holds the Clicker”, written by Lauren Slater, she introduces another way to deal with the mental illness: Neural implants. She takes a patient with obsessive compulsive disorder (OCD) as an example to show that the brain is the place that could control some our emotion. The deep brain stimulation (DBS) shows that the brain’s septal area and part