Reprocessing traumatic memories: EMDR, hypnosis and ketamine compared

September 29, 2026 · 20 min read

Huberman's fear and dreams episodes, David Spiegel's clinical hypnosis and the ketamine deep dive describe different tools for separating emotion from traumatic memory, each with its own evidence and limits. It helps trauma survivors understand the options beyond talk therapy.

12 questions on this insight. Answer in your head, then open the card.
What do all the trauma treatments in the article aim to do? Show answer

Keep the memory but loosen the fear attached to it, removing the emotional load without erasing the experience.

What are the two steps in Huberman's model of trauma treatment? Show answer

Extinction, where detailed retelling shrinks the fear response, and replacement, where a new narrative with rewarding associations is linked to the trauma.

How is EMDR done in the clinic? Show answer

Patients move their eyes side to side for 30 to 60 seconds and then recount the difficult event, with a certified practitioner.

Why does Huberman think EMDR's eye movements matter? Show answer

He cites at least five papers showing lateral, but not vertical, eye movements suppress the amygdala.

What is David Spiegel's objection to EMDR? Show answer

He says studies that remove the eye movements find they add nothing, so it is essentially an exposure therapy.

What does Spiegel say is the essence of trauma? Show answer

Helplessness, more than fear or pain, which is why he values self-hypnosis as a way to restore control.

What is Spiegel's screen technique? Show answer

Imagining the body floating somewhere safe while picturing the event on a screen, sometimes split to show both the threat and what the person did to protect themselves.

How many adults can be hypnotized? Show answer

About a third are not hypnotizable and about 15% are extremely so; training raises scores only a little.

How does ketamine help with trauma, per Huberman? Show answer

Its dissociation lets people recount trauma while feeling none or a very different set of emotions, remapping new feelings onto the old story.

When does ketamine seem most useful for trauma? Show answer

When trauma or fear is coupled with depressive symptoms, because the data on ketamine and depression is strong.

What are ketamine's main risks? Show answer

It can be addictive, is deadly combined with alcohol or barbiturates, can trigger seizures in seizure-prone people and raises liver enzymes.

Why does Huberman call REM sleep a kind of therapy? Show answer

During REM, epinephrine is essentially at zero, so the brain replays events without fear attached.

This is the short form. The full insight has every expert's reasoning, their own words and the sources.