Conclusion Local vibration could result in the decreasing of the concentration of plasma NO, probably related to the vibration-induced vascular impairment.

结论局部振动导致的血浆一氧化氮浓度的降低，可能与振动性血管损伤有一定联系。

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It indicated that vibration could result in the decrease in serum concentration of NO which might play a role in the process of vibration induced vascular impairment.

说明局部振动导致血清NO浓度降低，并可能参与了振动性血管损伤过程。

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A lack of choline can cause impairment of memory and concentration.

胆碱的缺乏会导致记忆力下降和精神涣散。

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The guidelines also state that people who have had strokes should be screened for cognitive problems, such as memory or concentration impairment, "as soon as is practicable".

BBC: NEWS | Health | 'Action needed on mini-strokes'