Excitatory Signals

Definition

Excitatory signals are electrical signals that increase the likelihood that a neuron will fire an action potential.

Related terms

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.