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Physics of Cognition



Communication through pupillometry

Video of our system for pupil-based communication (see: Stoll, J., Chatelle, C., Carter, O., Koch, C., Laureys, S., & Einhäuser, W. (2013). Pupil responses allow communication in locked-in syndrome patients. Current Biology, 23(15), R647-R648.)

Top left : Experimental setup, computer screen is visible to the far right. Top right: Stimulus as seen by the patient. Bottom left: Online analysis of pupil size. Rechts unten: Operator's screen with view of pupil. Audio: The question is read by the experimenter (“Is your name Josef?”); after 5s the system provides the answer "non" ("no") and further 5s later "oui" ("yes") (which is correct in this case).

Real-world eye movements

Video that shows gaze-centered (top) and head-centered (bottom) recordings, while walking on easy (left) or difficult (right) terrain: (Publication: 't Hart, B. M., & Einhäuser, W. (2012) Mind the step: complementary effects of an implicit task on eye and head movements in real-life gaze allocation. Experimental Brain Research, 223(2), 233-249.)