Additionally, mice offer a great way to monitor the psychoactive effects of marijuana on individuals. The psychoactive effects here refers to how chemical substances alter a person’s mental state by changing how the nervous system works. Marijuana can have damaging impacts on individuals when abused or used with the wrong proportion, and the effects start from malfunctions in the brain. The only way to ascertain how these psychoactive effects can be minimized in humans is to use mice in the research labs to see how marijuana affects them.