The results indicated that there were more fixed point, longer dwell time and less pupil size in OV than those in IP.Sweep amplitude diminished with increased task difficulty.

• 被试者在外景有更多的注视点、更多和更长的注视时间，在仪表上的平均瞳孔尺寸比外部视景要大，平均扫视幅度随任务难度增大而减小。