What have brain imaging studies told us about the effects of cannabis on cognition?

1. What have brain imaging studies told us about the effects of cannabis on cognition?

2. What is a cannabinoid, and about how many are there in cannabis? What is the cannabinoid found in brain tissue?

3. How is the action of THC in the brain terminated after about 30 minutes, when the half-life of metabolism is much longer than that?

 

1. Which of the hallucinogenic plants was most associated with witchcraft?

2. What can be concluded from the evidence regarding the neurotoxic effects of MDMA?

3. Which hallucinogen acts as an agonist at kappa opiate receptors?

4. What are the major differences between C. sativa and C. indica?

5. How is hashish produced?