In the study the researchers also used magnetic resonance imaging to see inside their subjects' brains.

试验中，研究人员运动核磁共振成像技术在检测受测者得大脑活动情形。

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At 24 weeks, magnetic resonance imaging shows just a few nascent grooves in the otherwise smooth surface of the fetal brain, according to a 2000 study in the journal Radiology.

根据2000年发表在《放射线学》一项研究，孕期第24周时，磁共振成像显示，在胎儿原本平滑的大脑皮层上出现了一些新的沟槽。

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Hauser cites a study in which spouses or unmarried couples underwent functional magnetic resonance imaging (fMRI) as they were subjected to mild pain.

豪瑟尔引用了一项研究，夫妻或未婚配偶接受功能性磁共振成像检查，他们会有一些轻微的疼痛。

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Then at about age 73, 700 study participants were given a magnetic resonance imaging (MRI) brain scan.

WSJ: Exercise Might Beat Puzzles for Protecting the Aging Brain

To study the neurology of tickling, Dr Blakemore and her team stuck volunteers into a magnetic-resonance-imaging machine (which monitors oxygen flow to the brain, and thus indicates the amount of activity in that organ's various parts).

ECONOMIST: Neuroscience: Tickled curiosity | The