<qa>  What is the device we propose for this study?The device we propose for this study has several features that make it more suitable for use in the TS population than other devices. It is self-contained in the skull and brain, and contains no tunneled neck connector wire and no chest pacemaker deice. This will help to lessen infection, and will assist in limiting device-related fractures due to tics involving neck region. Also, the system can record electro-encephalograph data from the area of the electrodes, which will assist us in gathering information about what specific physiological changes are correlated with tics. 