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Related Experiment Video

Updated: May 9, 2026

Extinction Training During the Reconsolidation Window Prevents Recovery of Fear
11:17

Extinction Training During the Reconsolidation Window Prevents Recovery of Fear

Published on: August 24, 2012

Sleep enhances exposure therapy.

B Kleim1, F H Wilhelm2, L Temp3

  • 1Department of Clinical Psychology and Psychotherapy, University of Zurich, Zurich, Switzerland.

Psychological Medicine
|July 12, 2013
PubMed
Summary
This summary is machine-generated.

Sleep after exposure therapy significantly reduces phobic anxiety and fearful thoughts. This sleep-dependent memory consolidation enhances psychotherapy outcomes for anxiety disorders.

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Eye Tracking, Cortisol, and a Sleep vs. Wake Consolidation Delay: Combining Methods to Uncover an Interactive Effect of Sleep and Cortisol on Memory
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Eye Tracking, Cortisol, and a Sleep vs. Wake Consolidation Delay: Combining Methods to Uncover an Interactive Effect of Sleep and Cortisol on Memory

Published on: June 18, 2014

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Last Updated: May 9, 2026

Extinction Training During the Reconsolidation Window Prevents Recovery of Fear
11:17

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Published on: August 24, 2012

Eye Tracking, Cortisol, and a Sleep vs. Wake Consolidation Delay: Combining Methods to Uncover an Interactive Effect of Sleep and Cortisol on Memory
08:08

Eye Tracking, Cortisol, and a Sleep vs. Wake Consolidation Delay: Combining Methods to Uncover an Interactive Effect of Sleep and Cortisol on Memory

Published on: June 18, 2014

Area of Science:

  • Psychology
  • Neuroscience
  • Sleep Science

Background:

  • Sleep is crucial for memory consolidation.
  • Exposure therapy is a common treatment for phobic anxiety.
  • The role of sleep in consolidating therapeutic gains is an area of active research.

Purpose of the Study:

  • To investigate the effect of sleep on memory consolidation after psychotherapy for phobic anxiety.
  • To determine if sleep enhances the long-term effectiveness of exposure therapy.

Main Methods:

  • Forty individuals with spider phobia underwent virtual reality exposure therapy.
  • Participants were randomly assigned to either a sleep (90 min) or wake condition post-therapy.
  • Fear and cognitive responses were assessed after one week while approaching a live spider.

Main Results:

  • Sleep following exposure therapy led to significantly greater reductions in self-reported fear and catastrophic cognitions compared to wakefulness.
  • These fear reductions were associated with increased percentages of stage 2 sleep.
  • The therapeutic benefits were sustained at the one-week follow-up.

Conclusions:

  • Sleep actively enhances the effectiveness of psychotherapy, such as exposure therapy, for phobic anxiety.
  • This suggests sleep strengthens newly formed non-fearful memory traces established during therapy.
  • Sleep represents a non-invasive method to improve therapeutic memory consolidation, offering an alternative to pharmacological or behavioral interventions.