Miyakoshi Makoto, Kanayama Noriaki, Nomura Michio, Iidaka Tetsuya, Ohira Hideki
Graduate School of Environmental Studies, Department of Psychology, Nagoya University, Japan.
Int J Psychophysiol. 2008 Aug;69(2):119-26. doi: 10.1016/j.ijpsycho.2008.03.009. Epub 2008 Apr 8.
While faces are recognized viewpoint-dependently, familiar faces are recognized in a relatively viewpoint-independent manner. We conducted a cognitive ERP experiment to investigate the effect of viewpoint-independence for familiar-face recognition. The present results showed that facial angle differences were reflected by N170 latency and N250 amplitude. Furthermore, the N250 difference was attenuated in the left hemisphere for famous faces and in the right hemisphere for one's own face. We concluded that familiar faces are first recognized viewpoint-dependently, but then are represented viewpoint-independently. The laterality difference observed in N250 may be related to a self-relevant process in the right hemisphere, while a familiarity process is associated with the left hemisphere.
虽然面孔识别具有视角依赖性，但熟悉面孔的识别方式相对独立于视角。我们进行了一项认知ERP实验，以研究视角独立性对熟悉面孔识别的影响。目前的结果表明，面部角度差异通过N170潜伏期和N250波幅反映出来。此外，对于名人面孔，N250差异在左半球减弱，而对于自己的面孔，N250差异在右半球减弱。我们得出结论，熟悉面孔最初是通过视角依赖性进行识别的，但随后是以视角独立性进行表征的。在N250中观察到的偏侧性差异可能与右半球的自我相关过程有关，而熟悉过程则与左半球相关。
