Fiveable
Fiveable

Excitatory Signals

Definition

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

Analogy

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).

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.

"Excitatory Signals" appears in:



© 2024 Fiveable Inc. All rights reserved.

AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.


© 2024 Fiveable Inc. All rights reserved.

AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.