The process by which neurons communicate by transmitting chemical signals (neurotransmitters) across synapses.
Excitatory Neurotransmitters:
Neurotransmitters that increase the likelihood of a neuron firing an action potential (e.g., Acetylcholine).
Agonist:
A chemical that enhances or mimics the function of a neurotransmitter by binding to its receptor sites (e.g., Nicotine as an agonist for Acetylcholine).
Antagonist:
A chemical that blocks neurotransmitter receptor sites, preventing their function (e.g., Scopolamine as an Acetylcholine antagonist).
