Using transcranial Direct Current Stimulation (tDCS) to investigate why faces are and are not special.

Using transcranial Direct Current Stimulation (tDCS) to investigate why faces are and are not special.
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DOI:
10.1038/s41598-021-83844-3
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发表时间:
2021-02-23
期刊:
影响因子:
4.6
通讯作者:
McLaren IPL
McLaren IPL
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Civile C;Quaglia S;Waguri E;Ward M;McLaren R;McLaren IPL

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我们相信我们现在能够回答这个问题,“脸是特别的吗?因为这适用于面部倒置效果(直立面部与倒置面部的性能更好)。使用双盲,受试者之间的设计,在两个实验(n = 96)中,我们应用了一个特定的tDCS程序针对Fp3区,而参与者进行匹配任务的面孔(实验1a)或棋盘从熟悉的原型定义的类别(实验1b)。阳极tDCS消除了在假手术组中可靠获得的棋盘格倒置效应,但仅减少了面部的棋盘格倒置效应(尽管减少是显著的)。因此,有一个组成部分的面反转效应,我们没有影响与tDCS程序,可以消除棋盘反转效应。我们认为,减少反映了损失的专业知识为基础的组件在面对反转效果,和剩余的是由于面对特定的组件的效果。
We believe we are now in a position to answer the question, "Are faces special?" inasmuch as this applies to the face inversion effect (better performance for upright vs inverted faces). Using a double-blind, between-subject design, in two experiments (n = 96) we applied a specific tDCS procedure targeting the Fp3 area while participants performed a matching-task with faces (Experiment 1a) or checkerboards from a familiar prototype-defined category (Experiment 1b). Anodal tDCS eliminated the checkerboard inversion effect reliably obtained in the sham group, but only reduced it for faces (although the reduction was significant). Thus, there is a component to the face inversion effect that we are not affecting with a tDCS procedure that can eliminate the checkerboard inversion effect. We suggest that the reduction reflects the loss of an expertise-based component in the face inversion effect, and the residual is due to a face-specific component of that effect.
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