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Related Experiment Videos

Auditory reflex thresholds elevated by stress-induced cortisol secretion

G Fehm-Wolfsdorf1, U Soherr, R Arndt

  • 1Institute of Psychology, University of Kiel, Germany.

Psychoneuroendocrinology
|January 1, 1993
PubMed
Summary
This summary is machine-generated.

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Psychological stress significantly impairs auditory perception by increasing the loudness needed to elicit an acoustic reflex. This effect is linked to the body's stress hormone, cortisol, impacting hearing sensitivity.

Area of Science:

  • Neuroscience
  • Auditory Science
  • Endocrinology

Background:

  • Auditory perception can be influenced by physiological and psychological states.
  • Stress responses involve the release of hormones like cortisol and testosterone.
  • Understanding how stress affects sensory systems is crucial for human health.

Purpose of the Study:

  • To investigate the impact of acute psychological stress on auditory reflex thresholds.
  • To explore the role of glucocorticoids, specifically cortisol, in stress-induced changes in hearing.

Main Methods:

  • 24 healthy volunteers underwent a psychological stressor.
  • Auditory reflex thresholds were measured before, during, and after stress exposure.
  • Salivary cortisol and testosterone levels, blood pressure, heart rate, and subjective stress were monitored.

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Main Results:

  • Psychological stress significantly increased the loudness required to elicit an acoustic reflex in the contralateral ear.
  • This effect was most pronounced in individuals with a substantial increase in free cortisol levels post-stress.
  • Findings align with previous studies showing similar effects from exogenous glucocorticoid administration.

Conclusions:

  • Acute psychological stress, mediated by glucocorticoids, can temporarily reduce auditory sensitivity.
  • Cortisol plays a significant role in modulating auditory reflex responses during stress.
  • These findings highlight the intricate connection between the endocrine system and sensory perception.