Einhäuser, Wolfgang and Schumann, Frank and Vockeroth, Johannes and Bartl, Klaus and Cerf, Morton and Harel, Jonathan and Schneider, Erich and König, Peter (2009) Distinct Roles for Eye and Head Movements in Selecting Salient Image Parts during Natural Exploration. Annals of the New York Academy of Sciences, 1164 . pp. 188-193. ISSN 0077-8923 http://resolver.caltech.edu/CaltechAUTHORS:20090904-091627267
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Humans adjust gaze by eye, head, and body movements. Certain stimulus properties are therefore elevated at the gaze center, but the relative contribution of eye-in-head and head-in-world movements to this selection process is unknown. Gaze- and head-centered videos recorded with a wearable device (EyeSeeCam) during free exploration are reanalyzed with respect to responses of a face-detection algorithm. In line with results on low-level features, it was found that face detections are centered near the center of gaze. By comparing environments with few and many true faces, it was inferred that actual faces are centered by eye and head movements, whereas spurious face detections ("hallucinated faces") are primarily centered by head movements alone. This analysis suggests distinct contributions to gaze allocation: head-in-world movements induce a coarse bias in the distribution of features, which eye-in-head movements refine.
|Additional Information:||Copyright © 2009 Wiley. We gratefully acknowledge the support by IST-027268-POP (Perception On Purpose, to P.K.), by the Bavaria California Technology Center (BaCaTeC, to W.E. and E.S.), and by Bayerische Forschungsstiftung (DOK-88-07 to J.V.). This work was financially supported in part within the DFG excellence initiative research cluster Cognition for Technical Systems – CoTeSys. Conflicts of Interest: The authors declare no conflicts of interest.|
|Subject Keywords:||eye movements; face; natural scenes; real-world behavior; salience|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||George Porter|
|Deposited On:||15 Sep 2009 15:54|
|Last Modified:||26 Dec 2012 11:19|
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