Einhäuser Wolfgang, Schumann Frank, Vockeroth Johannes, Bartl Klaus, Cerf Moran, Harel Jonathan, Schneider Erich, König Peter
Department of Neurophysics, Philipps-University, Marburg, Germany.
Ann N Y Acad Sci. 2009 May;1164:188-93. doi: 10.1111/j.1749-6632.2008.03714.x.
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.
人类通过眼睛、头部和身体的运动来调整注视。因此，某些刺激特性在注视中心处得到增强，但头部内眼睛运动和身体在世界中头部运动对这一选择过程的相对贡献尚不清楚。利用可穿戴设备（EyeSeeCam）在自由探索过程中记录的以注视和头部为中心的视频，根据面部检测算法的响应进行重新分析。与关于低级特征的结果一致，发现面部检测集中在注视中心附近。通过比较真实面孔较少和较多的环境，可以推断出真实面孔是通过眼睛和头部运动来定位的，而虚假的面部检测（“幻觉面孔”）主要仅通过头部运动来定位。该分析表明了对注视分配的不同贡献：身体在世界中头部运动在特征分布中产生粗略偏差，而头部内眼睛运动对其进行细化。
