@Article{, title={The effect of Ginseng and Nigella sativa on the psychomotor performance: Randomized clinical trial}, author={Ali Kadhum Chelab}, journal={Mustansiriya Medical Journal مجلة المستنصرية الطبية}, volume={10}, number={1}, pages={22-27}, year={2011}, abstract={Background Ginseng and nigella sativa produced different central effects separately but the combined effects not studied previously. Aims This study aimed to shows the separated and combined effects of Ginseng and Nigella sativa on the psychomotor performance. Subjects and method 20 healthy volunteers (15 males + 5 females) enrolled in this study, they were medical college students, and their ages were 20 – 21 year with mean of 20.2±0.41. Each volunteer do the psychomotor performance before and after each selected agents. Results The result showed ginseng produce significant improvement in all parameters of psychomotor performances, while the nigella improves only the choice reaction time and produces insignificant changes on other parameters. The combined action of ginseng and nigella produced significant improvement in all psychomotor performances parameters. Conclusions From these results, we can conclude, that combined effect of ginseng and nigella sativa produced significant effects more than ginseng alone and removed the inhibitory action of nigella sativa, also nigella sativa modulate the stimulatory action of ginseng, regarding the choice reaction time which reflect the cognitive function improvement.

} }