Cocaine

... my points and show your work. So now let's see if I can be of any help :evil: So I would definitely say b for 1 (see: http://en.wikipedia.org/wiki/Cocaine#Mechanism_of_Action) because that is the cause of the feeling. Even if it was diffusing slowly it would have the same effect, but simply not ...

See entire post

1. While under the influence of cocaine, some users report prolonged feelings of pleasure because dopamine a) reduces the refractory period of neurons b) remains in the synapse longer than normal c) increases the speed of nerve impulse transmission ...

See entire post

... affects the control of moods in a person. After being secreted into the synapse, dopamine is reabsorbed by transmitting neurons. The illegal drug cocaine causes an overspill of dopamine from transmitting neurons and blocks the reabsorption of dopamine by these neurons. After the dopamine is released, ...

See entire post

... the reward system, and often provide greater pleasure than is normally the result of natural stimulation. The reward system underlies addiction to cocaine, speed, angel dust, herione, morphine, alcohol and tobacco I also found a study trying to link drug addiction the circadian cycle which consistis ...

See entire post

... with your control. Glucose could be addictive itself. My memory is hazy, so no references, but I read about a study in which mice were presented cocaine and sugar. The mice would prefer the sugar.

See entire post