Laterality：男性在大脑左部显示图像 辨人脸 女用右脑

邓文龙

Laterality：男性在大脑左部显示图像

来源：生物谷 2015-03-05 13:01



2015年3月5日 讯 /生物谷BIOON/ --近日，发表在Laterality上的一篇文章显示，男性可以迅速的用大脑左部分辨出人脸图像。

萨利大学研究小组调研了42个志愿者，他们被要求盯住电脑屏幕的中心处，然后屏幕上闪现了280张不同的男女面孔，之后让志愿者快速分辨出这些面孔是男是女。研究发现当画面呈现在左半脑时大部分人是男性志愿者，尽管这与用右半脑的女性志愿者辨识面孔的正确率是一样的。

萨利大学之前的研究发现英语母语讲述者男性超过女性，其中一部分原因是由于刻板印象造成的。在描述浪漫的情侣名字时，无论他们是描述一个异性情侣还是同性伴侣时，人们通常将名字更为男性化的人名放在首位，——例如，“罗密欧与朱丽叶”和“亚当和夏娃”。这项新的研究调查用的是英语和英语志愿者，以英语为母语的男性感知面孔会导致一种偏倚，从而会影响我们感知他人面孔的思路，因为左大脑是处理语言的区域。

“我们的研究非常清楚地表明当男性面孔在左半脑显示时，人们会做出快速的决定。”萨利大学Sapphira Thorne说。

“重要的是我们要认识到瞬间判断一个人的性别并不总是正确的，我们应该了解我们无意间判断和归类面孔的能力。社会日益承认变性人定义自己性别身份的权利，而依靠我们的刻板印象来判断他人的性别可能会导致歧视现象的发生。”

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As the researchers note, the importance of paying attention at important times has become more important in our modern society—lapses can lead to car accidents or looking silly in a business meeting. They, like many others, wanted to know if a way could be found to cause people to be better at paying attention. To find out they enlisted the assistance of several volunteers who agreed to lay down inside of an fMRI machine while they played what amounted to a simple video game.
The idea was relatively straight forward, ask the volunteers to look at images of landscapes with people's faces superimposed over them and to press a button when the face shown was female (which was most of the time) and then to press a button depending on whether the landscape scene was inside or outside. Very easy and very boring, which was the point, they wanted the volunteers to zone out. As the volunteers did as they were asked, their brains were scanned by the fMRI with the images sent to a computer running pattern recognition software that was able to detect if they were looking at a male or female face or an indoor or outdoor scene, which meant is could tell when the person was spacing out.
The next part involved training the mind—when the software detected mind wandering, it automatically made very subtle changes to what the volunteers were seeing, making the background landscape grow dimmer for example, to highlight the face on top of it. By doing so, the researchers were able to cause an improvement in focus (as compared to a control group which did not get any brain feedback adjustments to their screen) by the volunteers as evidenced by the scores they received while playing their video game. That showed, the researchers claimed, that they were able to exercise the brain in a way that caused an improved ability to pay attention.
The findings by the team may or may not relate to real world situations, but the team is confident that they have found that providing feedback from a person's own brain can help improve concentration abilities.



[ 本帖最后由 邓文龙 于 2015-3-7 12:21 编辑 ]