The relationship between cannabis and memory is based on the effects of cannabinoids in the brain. Cannabis is made up of large molecules such as cannabinoids, flavonoids, and terpenes. There are over 100 cannabinoids embedded in the matrix of the cannabis plant. These cannabinoids act through the endocannabinoid system and cannabinoid receptors in the brain to effect some changes in the brainwaves. These cannabinoids directly or indirectly influence the cannabinoid receptors giving rise to positive and negative influences on memory.