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Related Experiment Videos

Cortisol levels predict cognitive impairment induced by electroconvulsive therapy.

T C Neylan1, J D Canick, S E Hall

  • 1Department of Psychiatry, University of California, San Francisco, CA 94121, USA.

Biological Psychiatry
|September 7, 2001
PubMed
Summary

Higher cortisol levels may worsen cognitive impairment in patients undergoing electroconvulsive therapy (ECT) for depression. This suggests that pre-treatment cortisol may predict the extent of ECT-induced cognitive side effects.

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Area of Science:

  • Neuroscience
  • Endocrinology
  • Psychiatry

Background:

  • Elevated glucocorticoids, such as cortisol, can increase brain vulnerability to seizure-related damage.
  • Major depression is often treated with electroconvulsive therapy (ECT), which can have cognitive side effects.

Purpose of the Study:

  • To investigate the relationship between baseline cortisol levels and cognitive impairment following electroconvulsive therapy (ECT) in patients with major depression.
  • To test the hypothesis that higher ambient cortisol predicts increased cognitive impairment after ECT.

Main Methods:

  • Salivary cortisol levels were measured in 16 depressed patients before unilateral nondominant ECT.
  • Cognitive functions, including memory, attention, and executive function, were assessed before ECT and after six ECT treatments.

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  • Pearson correlation coefficients were used to examine the association between basal cortisol and cognitive change scores.

    • Main Results:

    • ECT treatment improved mood but led to a decline in most cognitive measures.
    • Elevated basal cortisol levels were significantly correlated with a greater decline in executive function, visuospatial processing speed, and verbal memory.
    • These findings support the hypothesis linking higher cortisol to increased ECT-induced cognitive impairment.

    Conclusions:

    • Despite limitations of small sample size and multiple comparisons, the results suggest that elevated cortisol may predict greater cognitive impairment after ECT.
    • Further research is warranted to explore the neurobiological mechanisms underlying this association and potential interventions.