An Eye Tracking Study of Affective Disorder Patients With Suicide Risk

After completing a demographics form, theBeck Depression Inventory,Beck Anxiety Inventory,Barratt Impulsiveness Scale and Ruminative Response Scale-21, each participant has to go to the eye-tracking room and seats in a height adjustable chair and places their chin in a chin rest which was positioned to make sure all participants' eye are in the same location relative to the camera and the monitor. There are 18 trials and 2 filler trials in the free-view task, each of which contains 4 pictures on the same screen for 25 seconds. There is also a gap screen between each trial lasting for 2 seconds when participants were asked to fixate in the center of the screen. During the experiment, participants are instructed to watch the screen as naturally as possible, and the initial location of the fixation of each trial and the total dwell time of each emotional images(negative, happy, neutral and suicide-related)and the changes of the pupil size were recorded.