Excitatory signals are electrical signals that increase the likelihood that a neuron will fire an action potential.
Think of excitatory signals like the cheering crowd at a sports game. The louder and more enthusiastic they cheer, the more likely the team (or in this case, the neuron) is to perform (fire an action potential).
Inhibitory Signals: These are electrical signals that decrease the likelihood that a neuron will fire an action potential.
Neurotransmitters: These are chemical messengers that transmit messages from one neuron to another.
Receptor Sites: These are locations on a receptor neuron into which specific neurotransmitter fits like a key into a lock.
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