![]() Thus, the task requires a transfer or generalization from the remembered facial information to the novel view. Importantly, in each trial, the test items are shown in views that are always different from the view seen for the initial, sample face. In such a task, participants see a target face and then are tested with forced choice items that consist of several faces, four in our specific case, only one of which is a target face. The task was designed after that of the Cambridge Face Memory Test (Duchaine & Nakayama, 2006). In the current study, we used a face recognition task where each face was seen in several facial views. Taken together, these findings support the conclusion that face recognition across viewpoint transformation is facilitated by the addition of stereoscopic depth cues. ![]() A “region of interest” analysis of gaze data showed that rich volumetric properties provided by certain facial features (e.g., the nose and the cheeks) were attended more in the 3D condition compared to the 2D condition. Moreover, individual differences in interpupillary distance predicted recognition performance in the 3D but not in the 2D condition. The findings revealed that participants were more accurate in the 3D condition. Subjects' eye movements were recorded during both 3D and 2D sessions. One unresolved question about face perception is: what is the role of three-dimensional information in face recognition? In this study, recognition performance was compared across changes in viewpoint in different depth conditions: a 2D condition without stereo information and a 3D condition where stereo information was present (by viewing the same face images as anaglyphs through 3D glasses).
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