Do you prefer full moons, new moons, or crescents? Whatever your birth moon, with Moonglow jewelry you can wear your favorite moon! Our moon phase necklaces make great gifts for any occasion, especially birthdays and anniversaries!
In the brain, dopamine functions as a neurotransmitter âa chemical released by nerve cells to send signals to other nerve cells. The brain includes several distinct dopamine systems, one of which plays a major role in reward-motivated behavior.
Excitatory and inhibitory effects The direct effect of a neurotransmitter is to activate a receptor. A neurotransmitter can cause the receptor to experience excitatory effects, which increases the probability that the neuron will fire an action potential. This is referred to as an agonist. An example of this is glutamate and the majority of its receptors.