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
The Mind's Eye & Mission of the Viyrans The Mind's Eye & Mission of the Viyrans The Mind's Eye is a Big Finish Productions audio drama based on the long-running British science fiction television series "Doctor Who". It is a three-part story written by Colin Brake and was released alongside a one-part story, "Mission of the Viyrans". The Doctor, Erimem and Peri have gone their separate ways. The Doctor is wandering on a nameless paradise planet filled with murderous primates (but only at night) and carnivorous plants. Erimem is the Queen of a space colony empire, New Cairo, and is suffering a rebellion, while Peri's stepson and new