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Glossary

AMPA receptor

A glutamate receptor implicated in ketamine's downstream effects.

Written by: Ira ZootMedical review status: Not yet clinically reviewed.Last updated: June 4, 2026Evidence: Educational definition

This page has been written and edited by the publisher. It has not been reviewed by a licensed clinician.

AMPA receptors mediate fast excitatory transmission. Ketamine-induced glutamate surges increase AMPA signaling, which contributes to synaptic plasticity and is thought to underlie part of the antidepressant response.

Related terms

  • Glutamate The brain's primary excitatory neurotransmitter.
  • NMDA receptor A glutamate receptor central to ketamine's mechanism of action.

Definitions are educational and general. They are not medical advice.

About the author

Publisher and editor of Ketalux, based in Chicago, Illinois. Ira is a ketamine therapy patient, not a clinician. This is editorial review, not medical review: Ira is not a licensed clinician and does not provide diagnosis or medical care. Ketalux does not accept compensation from providers in exchange for favorable editorial coverage, evidence ratings, recommendations, patient referrals, or organic provider ranking. Read the full publisher disclosure →

Educational use only. The content on this page is provided for general educational purposes and does not constitute medical advice, diagnosis, or treatment. Ketamine and related therapies carry risks and are appropriate only under qualified medical supervision. Always consult a licensed healthcare professional about your individual situation. Information may change as research evolves.