Grave (burial) From Wikiquote. A grave is a location where a dead body (typically that of a human, although sometimes that of an animal) is buried. Graves are usually located in special areas set aside for the purpose of burial, such as graveyards or cemeteries. 1 Quotes.
The most effective way to artificially increase levels of dopamine is to take a psychostimulant ADHD medication. Most of these medications act as amphetamines or increase dopamine levels via slightly different mechanisms (e.g. methylphenidate).
Researchers are still not sure exactly how opiate drugs cause this increase in dopamine, but one theory says that when the opiate binds to the receptors on the third neuron shown, that neuron releases less GABA, which is a neurotransmitter that inhibits dopamine.The reason that some neurons have special receptors for opiates is probably that there are naturally occuring opiates in the brain.). This causes the amount of dopamine in the synaptic clefts in the reward pathway to increase dramatically, as shown in the close-up of the synaptic cleft to the left.