What are some similarities and differences between how Cocaine, Ecstasy, Heroin and Cannabis work in the brain

What are some similarities and differences between how Cocaine, Ecstasy, Heroin and Cannabis work in the brain?

also...where can I find more detailed information on my question. Thanks

: http://alcoholdrugstreatment.info/what-are-some-similarities-and-differences-between-how-cocaine-ecstasy-heroin-and-cannabis-work-in-the-brain