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Related Experiment Videos

Effect of high-dose cortisol on memory functions.

Romuald Brunner1, Daniele Schaefer, Klaus Hess

  • 1Department of Child and Adolescent Psychiatry, Center of Psychosocial Medicine, University of Heidelberg, Blumenstrasse 8, 69115 Heidelberg, Germany. romuald_brunner@med.uni-heidelberg.de

Annals of the New York Academy of Sciences
|August 8, 2006
PubMed
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High-dose glucocorticoids selectively impair long-term memory retrieval, but not short-term memory or attention. This reversible effect suggests a receptor-mediated impact on the hippocampus, potentially linking stress hormones to memory issues in psychiatric disorders.

Area of Science:

  • Neuroscience
  • Endocrinology
  • Psychiatry

Background:

  • Elevated glucocorticoid levels are known to impair long-term memory and traumatic memory retrieval.
  • The effects of acute glucocorticoid increases on learning, attention, and executive functions remain unclear.
  • Recovery from glucocorticoid-induced memory deficits is also insufficiently studied.

Purpose of the Study:

  • To investigate the impact of high-dose glucocorticoid treatment on various memory functions.
  • To examine effects on attentional functions and executive functions.
  • To assess the reversibility of potential memory impairments.

Main Methods:

  • Studied patients experiencing acute exacerbations of neurological diseases (multiple sclerosis, acute optic neuritis).

Related Experiment Videos

  • Patients received high-dose glucocorticoid treatment.
  • Assessed long-term memory, short-term memory, attention, and alertness.

    • Main Results:

    • All patients showed reversible impairments in long-term memory functions.
    • Short-term memory, attentional functions, and alertness remained unaffected.
    • Cognitive disturbances were selective to long-term memory.

    Conclusions:

    • High-dose glucocorticoids cause selective, reversible long-term memory deficits.
    • Findings support a receptor-mediated effect of glucocorticoids on hippocampal function.
    • Suggests a link between stress-induced cortisol levels and memory disturbances in trauma-related disorders like PTSD.