Facilities
TMS/Eye Tracking Laboratory
Transcranial Magnetic Stimulation (TMS) is delivered by a coil on the surface of the head, which generates a brief put powerful magnetic pulse that induce a temporary current in a small area on the surface of the brain. This current can interfere with processing of the brain with high temporal and fair spatial precision. Our facility includes a stereotactic guidance system for the TMS coil that enables us to visualize the precise site of stimulation in the brain.
Our eye tracking lab uses an ASL 5000 series remote optic system. It is a complete eye tracking system for situations where the stimulus presented to the subject is restricted to a single surface such as a computer or video monitor. The system allows the subject approximately one square foot of head movement which eliminates the need for head restraint. The system's measurement is displayed as a cursor or set of cross hairs superimposed on the image from another video source showing the subject's field of view. A second camera displays a wide angle view of the subject and may be used to quickly locate the eye. This wide angle view of the subject may also be recorded. Recorded data include time, x and y eye position coordinates and pupil diameter. External data events/marks can be recorded along with eye tracker data. Eye position coordinates correlate to specific areas on the surface being viewed. Included with the system is ASL's EYENAL and FIXPLOT data analysis software.
Sabine Kastner
email: skastner@princeton.edu
phone: 609-258-0479