Laeng B, Rouw R
Department of Psychology, University of Tromsø, Norway.
Laterality. 2001 Jul;6(3):193-224. doi: 10.1080/713754410.
Evidence is given for a special, canonical, status of one specific view in the identification of familiar faces. In the first experiment, subjects identified by name the fully frontal or profile poses of briefly familiarised individuals less efficiently than an intermediate pose. In addition, in a matching experiment using faces seen in different poses, it was found that one specific intermediate pose (corresponding to 22.5 degrees of angle from the full frontal view) was matched more efficiently in the right visual field (RVF) than in the left visual field (LVF). This finding supports the hypothesis of a superiority of the left hemisphere (LH) over the right hemisphere (RH) in processing a familiar face's canonical view. The other tested "noncanonical" views (i.e., full frontal, 45 degrees, and profile) of these same familiar faces were better matched in the LVF (i.e., the RH); especially at low levels of familiarity. We conclude that, for each familiar face, a viewer-centred representation of the canonical (22.5 degrees ) view is stored in the LH's memory system, whereas multiple views of familiar faces are stored in a memory system of the RH. With increasing levels of familiarity other views are increasingly more efficiently encoded by the LH, and in fact for facial self-recognition the full-front view is superior to any of the other tested views. These findings taken together suggest that complementary lateralised memory subsystems in the two cerebral hemispheres store different sets, only partially overlapping, of view-centred face representations.
有证据表明，在识别熟悉面孔时，一种特定观点具有特殊的、规范的地位。在第一个实验中，与中间姿势相比，受试者按名字识别短暂熟悉个体的完全正面或侧面姿势的效率较低。此外，在一个使用不同姿势呈现面孔的匹配实验中，发现一种特定的中间姿势（与完全正面视图成22.5度角）在右视野（RVF）中的匹配效率高于左视野（LVF）。这一发现支持了在处理熟悉面孔的规范视图时左半球（LH）优于右半球（RH）的假设。这些相同熟悉面孔的其他测试“非规范”视图（即完全正面、45度和侧面）在左视野（即右半球）中的匹配更好；尤其是在熟悉程度较低时。我们得出结论，对于每张熟悉的面孔，以观察者为中心的规范（22.5度）视图的表征存储在左半球的记忆系统中，而熟悉面孔的多个视图存储在右半球的记忆系统中。随着熟悉程度的提高，左半球对其他视图的编码效率越来越高，事实上，对于面部自我识别，完全正面视图优于任何其他测试视图。综合这些发现表明，两个大脑半球中互补的偏侧化记忆子系统存储不同的、仅部分重叠的以视图为中心的面部表征集。
