Ectopic automaticity, triggered activity and reentry may be the mechanisms of the arrhythmia.

自律性异常、触发活动和折返形成是房速的主要发生机制。

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Combining with electrophysiological results, we suggest that the mechanism of inducing VT might he due to triggered activity and abnormal automaticity.

结果提示，运动试验诱发VT的机制，可能是延迟后去极化触发活动和肾上腺素敏感性增高自律性异常。

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From a series of brain scans on volunteers, the researchers showed that a hunger hormone triggered activity in the brain that made people pay more for junk food than usual.

通过对志愿者大脑的观察，研究人员发现饥饿激素能够刺激大脑活动，人买的垃圾食品比平常要多。

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And, intriguingly, the only thing that triggered limbic activity in either group was reading the happy story.

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The voluntary economic activity of growing crops triggered government regulation.

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He declined to describe in detail what triggered the attack, which was launched on Thursday, except to say "activity" had been detected there.

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