Facilitation of face recognition through the retino-tectal pathway
Facilitation of face recognition through the retino-tectal pathway
复制标题
DOI：
10.1016/j.neuropsychologia.2013.06.018
复制
发表时间：
2013-08-01
期刊：
影响因子：
2.6
通讯作者：
Kitazawa, Shigeru
中科院分区：
文献类型：
--
作者：
Nakano, Tamami;Higashida, Noriko;Kitazawa, Shigeru
在要求人类在人脸和非人脸目标之间做出选择的任务中，人类可以更快地将目光转向人脸，而不是非人脸目标。然而，目前尚不清楚从视网膜到上丘的直接投影是否特别参与了这种促进面部识别的过程。为了解决这个问题，我们向参与者展示了一对人脸和非人脸图片，在一种条件下以灰度调制（亮度定义刺激），在另一种条件下以蓝黄调制（s锥隔离刺激）。s锥隔离刺激的信息是通过视网膜-膝状通路而不是视网膜-顶状通路传递的。在亮度刺激下，受试者对人脸的反应时间比对非人脸的反应时间短。在s锥刺激下，人脸选择的促进效应消失。此外，当面部（带或不带情绪）和非面部刺激以灰度呈现时，恐惧面孔相对于中性面孔引发了更大的促进效应。S-cone刺激后，情绪表达的效果消失。与s锥刺激相比，通过反转原始彩色图片的极性制备的否定刺激仍然观察到面部促进效应，并且看起来和Scone刺激一样不寻常，但仍然包含亮度信息。这些结果表明，人脸促进效应需要亮度定义的面部和情绪信息，表明通过视网膜-顶叶通路传递的亮度信息是人脸识别速度加快的原因。(C) 2013 Elsevier Ltd.版权所有。
Humans can shift their gazes faster to human faces than to non-face targets during a task in which they are required to choose between face and non-face targets. However, it remains unclear whether a direct projection from the retina to the superior colliculus is specifically involved in this facilitated recognition of faces. To address this question, we presented a pair of face and non-face pictures to participants modulated in greyscale (luminance-defined stimuli) in one condition and modulated in a blue yellow scale (S-cone-isolating stimuli) in another. The information of the S-cone-isolating stimuli is conveyed through the retino-geniculate pathway rather than the retino-tectal pathway. For the luminance stimuli, the reaction time was shorter towards a face than towards a non-face target. The facilitatory effect while choosing a face disappeared with the S-cone stimuli. Moreover, fearful faces elicited a significantly larger facilitatory effect relative to neutral faces, when the face (with or without emotion) and non-face stimuli were presented in greyscale. The effect of emotional expressions disappeared with the S-cone stimuli. In contrast to the S-cone stimuli, the face facilitatory effect was still observed with negated stimuli that were prepared by reversing the polarity of the original colour pictures and looked as unusual as the Scone stimuli but still contained luminance information. These results demonstrate that the face facilitatory effect requires the facial and emotional information defined by luminance, suggesting that the luminance information conveyed through the retino-tectal pathway is responsible for the faster recognition of human faces. (C) 2013 Elsevier Ltd. All rights reserved.