Eye tracking white sclera (limbus tracking). It presents another challenge for vertical eye movements due to obstruction of eyelids. Eye-tracking setups vary greatly: some are head-mounted, some require the head to be stable (for example, with a chin rest), and some function remotely and automatically track the head during motion. Most use a sampling rate of at least 30 Hz. Although 50/60 Hz is more common, today many video-based eye trackers run at 240, 350 or even 1000/1250 Hz, speeds needed in order to capture fixational eye movements or correctly measure saccade dynamics. Eye movements are typically divided into fixations and saccades
Shiren the Wanderer 4: The Eye of God and the Devil's Navel second week, it had dropped off the chart. By the end of 2012, it was the 416th best selling video game in Japan, with a total of 18,028 copies sold. Shiren the Wanderer 4: The Eye of God and the Devil's Navel Shiren the Wanderer 4: The Eye of God and the Devil's Navel is a role-playing video game developed by Chunsoft and published by Spike. It is the fourth main entry in the "Shiren the Wanderer" series, which itself is a part of the larger "Mystery Dungeon" series. The game was originally released for the Nintendo DS in 2010;