Key Difference – Excitatory vs Inhibitory Neurotransmitters Neurotransmitters are chemicals in the brain which transmits signals across a synapse. They are classified into two groups based on their action; these are called excitatory and inhibitory neurotransmitters. The key difference between excitatory and inhibitory neurotransmitters is their function; excitatory neurotransmitters stimulate the brain whereas inhibitory […]