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文章详情介绍：
高考英语阅读理解限时训练 the fMRI recording
【导语】这是一篇说明文。文章主要介绍了一款基于人工智能系统的升级设备，研究人员用该设备可以将人类脑电波转换成日常语言。
儿童歌曲-江南.mp32:14 来自悦读乐词
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How can people speak their mind without saying anything? This is a question that scientists have aimed to answer for a long time.Researchers recently brought an upgraded device that can translate users’ brain waves into daily speech.
Previously,the team led by Edward Chang at the University of California, San Francisco, developed an Al-based system that can identify up to 50 commonly used words based on the participant’s brain waves. The participant was a paralyzed(瘫痪的)man who had been implanted with 16 electrodes(电极)under his skull.
According to their paper published in November, the team upgraded the system which can now translate thoughts into complete sentences on a computer screen.
Their tests showed that the device could decode silently spoken letters from a 1,152-word vocabulary at a speed of about 29 characters per minute. The accuracy was up to 94 percent. “It shows strong promise for restoring communication by tapping into the brain’s natural speech machinery,”Chang said to the university’s news website.
However, this method can still be problematic since users still need to undergo surgery. Scientists at the University of Texas, US, have tried to translate people’s thoughts without even touching their heads, reported Live Science.
The new technique is called fMRI，or functional magnetic resonance imaging(功能性磁共振成像). It’s a safer way of “reading”brain activity. Active brain cells have more oxygen. By tracking these cells, scientists can translate brain activity.
The team asked participants to listen to16 hours of radio shows while scanning their brains. Then they used a computer algorithm(算法)to create a story based on the fMRI recording. It matched the radio shows pretty well.
Also, the algorithm could basically explain the story of a silent movie that the participants watched. The team aims to develop this technology so that it can be used in brain-computer interfaces(脑机接口)designed for people who cannot speak or type.
12. What do we know about the device mentioned in Para 2?
A. It was implanted into a man’s heart.
B. It can help restore patients’ lost memory.
C. It was developed through cooperation.
D. It can identify about 50 rarely used words.
13. How does fMRI“read”people’s minds?
A. By tracking their active brain cells.
B. By putting electrodes into their brains.
C. By recording their reaction to radio shows.
D. By matching their brain activity with their habits.
14 Why is fMRI chosen compared to the first device mentioned in the story?
A. It’s cheaper.
B. It’s more accurate.
C. It’s smaller in size.
D. It’s safer.
15. What can be concluded about fMRI from the last two paragraphs?
A. It can only read what participants hear.
B. It can be used in brain-computer interfaces.
C. It can read every detail of participants’ minds.
D. It cannot work out what people imagine in their heads.
C | A | D | B |