Relative expertise affects N170 during selective attention to superimposed face-character images
Relative expertise affects N170 during selective attention to superimposed face-character images
复制标题
在选择性注意叠加的面部特征图像时，相关专业知识会影响 N170
DOI：
10.1111/psyp.12862
复制
发表时间：
2017-07-01
期刊：
影响因子：
3.7
通讯作者：
Fu, Shimin
中科院分区：
文献类型：
--
作者：
Ip, Chengteng;Wang, Hailing;Fu, Shimin
目前还不清楚ERP的N170是否反映了特定领域或一般领域的视觉对象加工。在这项研究中，我们使用了一张脸和一个汉字的叠加图像，这样参与者对这两种对象类型的相对专业知识要么相似（实验1和2），要么不同（实验3）。实验1表明，当被试注意到的是一个面孔-字符组合的字符，而不是面孔时，N170的振幅更大。这一结果是不变的实验2中，其中任务难度选择性增加的脸组件的组合刺激。实验3表明，虽然这N170增强出席字符相对于面孔持续假字符与可识别的部分，它消失了无法识别的字符。因此，N170振幅是显着更大的汉字比在一个组合的图像，独立的相对任务难度的面孔。这一结果强烈质疑N170的面部选择性，表明与特定领域账户建立的预期相反，N170受到专业知识的调节。
It remains unclear whether the N170 of ERPs reflects domain-specific or domain-general visual object processing. In this study, we used superimposed images of a face and a Chinese character such that participants' relative expertise for the two object types was either similar (Experiment 1 and 2) or different (Experiment 3). Experiment 1 showed that N170 amplitude was larger when participants attended to the character instead of the face of a face-character combination. This result was unchanged in Experiment 2, in which task difficulty was selectively increased for the face component of the combined stimuli. Experiment 3 showed that, although this N170 enhancement for attending to characters relative to faces persisted for false characters with recognizable parts, it disappeared for unrecognizable characters. Therefore, N170 amplitude was significantly greater for Chinese characters than for faces presented within a combined image, independent of the relative task difficulty. This result strongly calls N170 face selectivity into question, demonstrating that, contrary to the expectations established by a domain-specific account, N170 is modulated by expertise.