【科学60秒】痛楚测算有新招_英语听力练习mp3下载-科学-沪江听力酷

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【科学60秒】痛楚测算有新招

听力简介：

Physicians gauging pain have little to go on besides a patient’s self-report. And some sufferers simply can’t ___1___ how they’re feeling.

So scientists have searched for a reliable way to measure pain physiologically. And they may finally have one.

Researchers ___2___ functional MRI scans on the brains of 24 subjects who were having an arm heated to the point of moderate pain. The subjects’ brain patterns were recorded both as they experienced pain and zero pain. The researchers then used an algorithm to develop a pain model, based on the patterns. The work was published in the journal PLoS One.

The researchers then analyzed the brain scan patterns of 16 new subjects, some experiencing pain, some not. They found that their model accurately ___3___ pain levels 81 percent of the time.

Most studies of physiology-based measurements of pain have focused on heart rate, skin conductance and EEG. These measures ___4___ pain, but nothing has been accurate enough to ___5___ the self-reports.

The authors note we can’t depend solely on a study done with heat-based pain—but the method shows hope for new ways to accurately measure pain.
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