No, neurotransmitters that depress the resting potential are called inhibitory neurotransmitters. Excitatory neurotransmitters have the opposite effect, causing depolarization and increasing the likelihood of an action potential.
neurotransmitters
There are three major neurotransmitters that account for most of the effects produced by drugs of abuse: dopamine, serotonin, and norepinephrine. These neurotransmitters play a key role in the brain's reward circuitry and are often targeted by addictive substances to produce their desired effects.
The neurotransmitters from one neuron have direct effect on the next neuron. They are channels that are used to transmit messages in the nerves.
Hormones and neurotransmitters
Anti-psychotic
Marijuana is considered agonistic- it enhances the effects of neurotransmitters.
This class of neurotransmitters is called endorphins.
nuerotransmitter
Link provided to mindfullnes research at Wikipedia.
The process of recycling neurotransmitters is known as reuptake. This is when neurotransmitters are taken back up into the presynaptic neuron after they have been released into the synaptic cleft.
These are typically known as neuromodulators; they can either change the rate at which a neurotransmitter is released, or alter the response to a certain neurotransmitters.