Volatiles emitted from the roots of Vetiveria zizanioides suppress the decline in attention during a visual display terminal task
Volatiles emitted from the roots of Vetiveria zizanioides suppress the decline in attention during a visual display terminal task
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DOI：
10.2220/biomedres.33.299
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发表时间：
2012-10-01
影响因子：
1.2
通讯作者：
Kondo, Ryuichiro
中科院分区：
文献类型：
--
作者：
Matsubara, Eri;Shimizu, Kuniyoshi;Kondo, Ryuichiro
多年生草本植物 Vetiveria zizanioides（香根草）主要因其芳香精油而被种植。尽管人们对油的成分及其生物活性进行了广泛的研究，但迄今为止，V zizanioides 根部散发的挥发物对人类的影响仍未得到探索。我们研究了在视觉显示终端任务中，V zizanioides 切根（1.0 g，低剂量条件；30 g，高剂量条件）释放的挥发性化合物对个体的影响。通过心电图测量，呼吸低剂量条件下释放的挥发性化合物的参与者表现出更快的反应时间和交感神经活动的刺激。在高剂量条件下没有观察到这些效应。实验过程中挥发物排放总量在低剂量条件下为0.25μg，在高剂量条件下为1.35μg。这些发现表明，在低剂量条件下从 V. zizanioides 的根部散发出的挥发性化合物可能有助于受试者保持视觉辨别任务的表现，同时保持较高的交感神经系统活性。
The perennial grass Vetiveria zizanioides (vetiver) is mainly cultivated for its fragrant essential oil. Although the components of the oil and their biological activities have been studied extensively, the effect of the volatiles emitted from the roots of V zizanioides on humans has so far remained unexplored. We investigated the effects of volatile compounds emitted from the cut roots of V zizanioides (1.0 g, low-dose conditions; 30 g, high-dose conditions) on individuals during a visual display terminal task. Participants who breathed the volatile compounds emitted under low-dose conditions showed faster reaction times and stimulation of sympathetic nerve activity as measured by electrocardiography. These effects were not observed under high-dose conditions. The total amount of volatiles emitted during the experiment was 0.25 mu g under low-dose conditions and 1.35 mu g under high-dose conditions. These findings indicate that volatile compounds emitted from the roots of V. zizanioides under low-dose conditions may have helped subjects to maintain performance in visual discrimination tasks while maintaining high sympathetic nerve system activity.