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(单词翻译:双击或拖选)
很多人都相信上帝是公平的,关上眼前的一扇窗会为你打开另一扇窗。在最新的科学研究中我们也能得到类似的结论:天生听力有缺陷的人会有更好的视觉。
Recent research explains how the deaf can have extraordinary sight. Christie Nicholson reports
Is it an old wives tale or can deaf people actually see better? Scientists have long thought that the structure of our brain is fixed1. For instance, from birth the auditory cortex will receive only sound or the visual cortex will receive only visual input2.
But in the last decade neuroscientists have overthrown3 this idea in favor of a more malleable4 brain.
New research published this week in the journal Nature Neuroscience supports that view. It helps explain why those who are congenitally deaf may have extraordinary sight.
Since the auditory cortex sits there, at birth, waiting for auditory inputs5 that never come, it starts receiving visual stimuli6 instead—in cats anyway. And the neural7 real estate devoted8 to vision increases.
Researchers compared congenitally deaf cats to hearing cats, and found that deaf cats have enhanced peripheral9 vision and motion detection.
They confirmed that the part of the auditory cortex that picks up peripheral sound switches to peripheral vision.
With the deaf it’s especially good to have increased peripheral vision. If you cannot hear a car approaching from the side, it'd be advantageous10 to actually see it.
—Christie Nicholson
1 fixed | |
adj.固定的,不变的,准备好的;(计算机)固定的 | |
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2 input | |
n.输入(物);投入;vt.把(数据等)输入计算机 | |
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3 overthrown | |
adj. 打翻的,推倒的,倾覆的 动词overthrow的过去分词 | |
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4 malleable | |
adj.(金属)可锻的;有延展性的;(性格)可训练的 | |
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5 inputs | |
n.输入( input的名词复数 );投入;输入端;输入的数据v.把…输入电脑( input的第三人称单数 ) | |
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6 stimuli | |
n.刺激(物) | |
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7 neural | |
adj.神经的,神经系统的 | |
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8 devoted | |
adj.忠诚的,忠实的,热心的,献身于...的 | |
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9 peripheral | |
adj.周边的,外围的 | |
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10 advantageous | |
adj.有利的;有帮助的 | |
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