The effects of recreational drugs on the transmission process in the CNS


	The effects of recreational drugs on the transmission process in the CNS
	AdvantagesGetting Started There is a lot of supporting evidence- Old and Milner found the pleasure centre in the brain and Straiker and Mackie used cultured hippocampal neurons from mice to study the effects of cannabis. The supporting studies are scientific and controlled, adding validity and credibility. There is credibility in suggesting that recreational drugs create more dopamine in the reward system, as by observing those thta take drugs, we can see that they first experience great pleasure and they then become addicted. External information backs up the study of internal processes, suggesting reliability and perhaps some validity.	Disadvantages There is more than one reward pathway in the reward system and more than one area involved, so having one explanation for the mode of action of a drug seems rather simplistic. It is hard to study the action of drugs at the synapse. Brain scans have helped, but still can't get to this level of synaptic transmission. Animal studies are used but they may differ fromm humans, making it hard to generalise.
	Evaluation

There is a lot of supporting evidence- Old and Milner found the pleasure centre in the brain and Straiker and Mackie used cultured hippocampal neurons from mice to study the effects of cannabis.
The supporting studies are scientific and controlled, adding validity and credibility.
There is credibility in suggesting that recreational drugs create more dopamine in the reward system, as by observing those thta take drugs, we can see that they first experience great pleasure and they then become addicted.
External information backs up the study of internal processes, suggesting reliability and perhaps some validity.

There is more than one reward pathway in the reward system and more than one area involved, so having one explanation for the mode of action of a drug seems rather simplistic.
It is hard to study the action of drugs at the synapse. Brain scans have helped, but still can't get to this level of synaptic transmission.
Animal studies are used but they may differ fromm humans, making it hard to generalise.

Get Revising