A final enhancement: Adding mouse effects.

最后一点改进：增加鼠标效果。

youdao

youdao

Even caffeine, which is generally known only for its stimulatory effects, displays this property, depressing mouse locomotion at very low concentrations and stimulating it at higher ones.

就连人们通常觉得有刺激作用的咖啡因，也表现出了这种特性，它在浓度极低的情况下会抑制老鼠的运动，而在浓度较高的情况下则会刺激老鼠。

youdao

Stem-cell research dates to 1981 and started out with mouse embryos, which researchers used to study the effects of individual genes and to try treating disease in mice.

FORBES: Magazine Article

But he warned that the effects may be less pronounced in humans, saying "an enriched mouse is more like a normal human".

BBC: Lifestyle link to Huntington's disease