The scientists say this mirrors computer simulations where test subjects respond much faster to approaching visual stimuli when those objects are on a trajectory lined up with their heads.
科学家们说，这反映在计算机模拟上，当物体处于和头同一条线的轨迹上，测试对象对于处理视觉刺激能做出更快的反应。
The researchers then went on to test the participants by two other methods, this time to measure the capacity to learn associations between visual and auditory stimuli.
研究人员接着用另外两种方法测试参与者，这一次是测量学习视觉刺激与听觉刺激之间联系的能力。
To find out, they took samples of DNA from about 100 people and then subjected these people to what is known as the dot-probe paradigm test to see how they reacted to different stimuli.
为了找出答案，他们采集了大约100人的DNA样品，然后对这些人进行所谓的点探测任务实验，以便观察他们对不同刺激的反应。
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