Inhaling vetiver scent improves alertness and brain function.

入草味可以提高警觉性和大脑功能。

However, participants largely agreed on bergamot and vetiver, so lower or higher concentrations may have been needed for these scents.

然而，参与者在很大程度上同意佛手柑和根草，因此这些气味可能需要更低或更高的浓度。

A 2016 study also concluded that " the stimulating effects of vetiver essential oil might be beneficial for learning and memory processes" and can be used as a stimulant to improve task performance.

2016年的一项研究得出结，“草精油的刺激效果可能对学习和记忆过程有益”，并可作为一种刺激剂来提高任务表现。