Effect of image orientation on the eye direction aftereffect
Effect of image orientation on the eye direction aftereffect
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DOI：
10.1007/s00426-005-0221-1
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发表时间：
2006-09
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影响因子：
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通讯作者：
J. Seyama
中科院分区：
文献类型：
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作者：
J. Seyama
在观察一张脸的眼睛看向左边或右边（适应刺激），随后的脸（测试刺激）的眼睛方向的感知偏向于适应眼睛方向的相反方向;这被称为眼睛方向后效（EDAE）。在本研究中，适应刺激相对于观察者旋转90°（顺时针或逆时针）或180°。使用直立测试刺激测量EDAE。对于90°旋转，先前观察到的“正”和“负”眼方向分别使直立测试刺激的感知眼方向偏向右侧和左侧。这些结果表明，适应是利用基于对象（或基于脸）的参考框架。然而，对于180°旋转，结果表明，自适应是在以观察者为中心的参考系中引起的。基于物体的参考系的参与表明，EDAE至少在从直立位置的旋转角度不超过90°时反映了相对较高水平机制的适应。
After observing a face with the eyes looking to the left or right (adaptation stimulus), the perception of the eye direction of the subsequent face (test stimulus) is biased in the opposite direction of the adapted eye direction; this is called the eye direction aftereffect (EDAE). In the present study, the adaptation stimuli were rotated 90° (clockwise or counterclockwise) or 180° relative to the viewer. The EDAE was measured using upright test stimuli. For the 90° rotation, prior observation of the ‘leftward’ and ‘rightward’ eye directions biased the perceived eye directions of the upright test stimuli to the right and left, respectively. These results suggest that the adaptation was induced utilizing an object-based (or face-based) reference frame. For the 180° rotation, however, the results suggest that the adaptation was induced in a viewer-centered reference frame. The involvement of an object-based reference frame suggests that the EDAE reflected the adaptation of a relatively higher-level mechanism at least when the rotation angle from the upright position did not exceed 90°.