Repeated cortisol administration does not reduce intrusive memories - A double blind placebo controlled experimental
Alexandra Heike Graebener1, Tanja Michael1, Elena Holz1
1Division of Clinical Psychology and Psychotherapy, Department of Psychology, Saarland University, Germany.
Summary
Repeated cortisol administration after a traumatic film did not reduce intrusive memories or impair recognition memory in participants. This suggests cortisol alone is insufficient for mitigating intrusive re-experiencing in post-traumatic stress disorder (PTSD).
Area of Science:
- Neuroscience
- Psychopharmacology
- Trauma Studies
Background:
- Post-traumatic stress disorder (PTSD) is characterized by intrusive memories, significantly impairing daily functioning.
- Reducing intrusive memories is a primary therapeutic goal for PTSD.
- Cortisol, a glucocorticoid, has shown potential memory-inhibiting effects, making it a candidate for PTSD treatment.
Purpose of the Study:
- To investigate the efficacy of repeated cortisol administration in inhibiting intrusive memories.
- To examine the effect of cortisol on recognition memory following a traumatic experience.
Main Methods:
- A randomized, double-blind, placebo-controlled study using the trauma film paradigm.
- Participants received either a low dose of cortisol (20mg) or placebo for three days post-exposure.
- Intrusive memories were assessed via Electronic Diary and Intrusion Triggering Task; recognition memory was tested.
Main Results:
- Cortisol administration did not lead to a significant reduction in reported intrusive memories compared to placebo.
- No significant differences in recognition memory performance were observed between the cortisol and placebo groups.
- Sole cortisol administration post-trauma was ineffective in reducing intrusive re-experiencing.
Conclusions:
- Repeated, low-dose cortisol administration following a traumatic experience does not reduce intrusive memories.
- Cortisol treatment did not impair explicit memory recall for the traumatic event.
- Further research is needed to explore alternative or combined therapeutic strategies for reducing PTSD-related intrusions.
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