Tanaka Hideaki
Department of Psychology, Faculty of Psychology, Otemon Gakuin University, Ibaraki, Osaka Prefecture, Japan.
Neuroreport. 2018 May 2;29(7):583-587. doi: 10.1097/WNR.0000000000001003.
Studies investigating event-related potentials have reported on face-sensitive P1 and N170 components, as well as object-related N170 components. Face-sensitive N170 is also sensitive to face inversion, which has been defined as the face-inversion effect. This study aimed to directly compare the relationship between face-sensitive N170 during face perception (upright and inverted faces) and object-related N170 during object perception (two-dimensional and three-dimensional objects). More specifically, the purpose was to clarify whether face-sensitive P1 and N170 components are related to the perception of two-dimensional and three-dimensional objects. Electroencephalography was performed in participants who were shown one of the four types of stimuli: upright faces, inverted faces, two-dimensional objects, or three-dimensional objects. The results revealed that the latency of P1 for three-dimensional objects was significantly longer than that for two-dimensional objects, the latency of N170 for three-dimensional objects was significantly longer than that for two-dimensional objects, and the latency of N170 for inverted faces was significantly longer than that for upright faces. These findings suggest that face-sensitive P1 and N170 components are related to the perception of two-dimensional and three-dimensional objects. Moreover, the results suggest that, similar to the face-inversion effect of face-sensitive N170 affected by mental rotation of the face, the object-related N170 of three-dimensional objects was affected by the mental rotation of two-dimensional objects. This suggests the novel possibility that face-sensitive P1 and N170 components can be used as an index for the perception of two-dimensional and three-dimensional objects.
研究事件相关电位的研究报告了对面部敏感的P1和N170成分，以及与物体相关的N170成分。面部敏感的N170也对面部倒置敏感，这被定义为面部倒置效应。本研究旨在直接比较面部感知（正立和倒置面部）过程中面部敏感N170与物体感知（二维和三维物体）过程中与物体相关的N170之间的关系。更具体地说，目的是阐明面部敏感的P1和N170成分是否与二维和三维物体的感知有关。对观看四种类型刺激之一的参与者进行了脑电图检查：正立面部、倒置面部、二维物体或三维物体。结果显示，三维物体的P1潜伏期明显长于二维物体，三维物体的N170潜伏期明显长于二维物体，倒置面部的N170潜伏期明显长于正立面部。这些发现表明，面部敏感的P1和N170成分与二维和三维物体的感知有关。此外，结果表明，类似于面部敏感N170的面部倒置效应受面部心理旋转影响，三维物体的与物体相关的N170受二维物体心理旋转影响。这表明了一种新的可能性，即面部敏感的P1和N170成分可以用作二维和三维物体感知的指标。
