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Physics of Cognition



Communication through pupillometry

By clicking here you can download a demonstration video (6.1MB, avi-format) of our system for pupil-based communication (see: J. Stoll, C. Chatelle, O. Carter, C. Koch, S. Laureys, W. Einhäuser (2013) Pupil responses allow communication in locked-in syndrome patients. Current Biology, 25(15):R647-R648.)

Legend for video:

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

Here you find a video that shows you gaze-centered (top) and head-centered (bottom) recordings, while walking on easy (left) or difficult (right) terrain: video (Publication: B.M. 't Hart, W. Einhäuser (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.)