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Have you ever felt your life go into slow motion as you realize something bad is happening? Now scientists have measured exactly
Have you ever felt your life go into slow motion as you realize something bad is happening? Now scientists have measured exactly
admin
2019-03-03
6
问题
Have you ever felt your life go into slow motion as you realize something bad is happening? Now scientists have measured exactly how much these attention-grabbing events slow down our perception of the world around us.
An example of the world appearing to slow down is when you are hanging on the phone waiting for someone to pick up at the other end. If your attention wanders while you’re waiting, then suddenly switches back, you will probably hear what seems like a longer than usual silence before hearing the dialing tone again.
To see how our perception of time changes when something new happens, Vincent Walsh and his colleagues put headphones on volunteers and played eight beeps to their right ears. The gap between each beep was exactly 1 second, except for the gap between the fourth and fifth beeps, which the scientists could make shorter or longer. They altered the length of this gap until the volunteers estimated it was the same length as the other gaps. The researchers found that, on average, people judge a second slightly short, at 955 milliseconds.
In the second part of the experiment, the first four beeps were played to the subjects’right ear, but the other four were then played to their left. Again, the volunteers were asked to estimate when the gap between the fourth and fifth beeps was the same as the others. This time they judged a second to be even shorter at 825 milliseconds long.
Perceiving a second to be much shorter than it is makes you feel as though the world has gone into slow motion. Walsh thinks the effect could have evolved to give us a fraction more time to react to potentially threatening events.
Vincent Walsh and his colleagues did the experiment in order to______.
选项
A、see which ear is more sensitive to beeps
B、find out the relationship between time and life
C、study how time changes at the 4th and 5th beeps
D、observe how people’s perception of time changes
答案
D
解析
细节题。根据第三段第一句“To see how our perception of time changes when somethingnew happens,Vincent Walsh and his colleagues put headphones on volunteers and playedeight beeps to their right ears.”可知,人们对时间改变的感知,这就是Vincent Walsh和他的同事们做这项实验的目的。故选D。
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在职申硕(同等学力)英语
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