Tune it down to live it up?

• Verfasst von: Strelzyk, Florian [VerfasserIn]
• Verfasst von: Hermes, Michael [VerfasserIn]
• Titel: Tune it down to live it up?
• Titelzusatz: rapid, nongenomic effects of cortisol on the human brain
• Verf.angabe: Florian Strelzyk, Michael Hermes, Ewald Naumann, Melly Oitzl, Christoph Walter, Hans-Peter Busch, Steffen Richter, and Hartmut Schächinger
• E-Jahr: 2012
• Jahr: January 11, 2012
• Umfang: 10 S.
• Fussnoten: Gesehen am 25.08.2020
• Titel Quelle: Enthalten in: The journal of neuroscience
• Ort Quelle: Washington, DC : Soc., 1981
• Jahr Quelle: 2012
• Band/Heft Quelle: 32(2012), 2, Seite 616-625
• ISSN Quelle: 1529-2401
• DOI: doi:10.1523/JNEUROSCI.2384-11.2012
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1574277065

Abstract

The stress hormone cortisol acts on the brain, supporting adaptation and time-adjusted coping processes. Whereas previous research has focused on slow emerging, genomic effects of cortisol, we addressed the rapid, nongenomic cortisol effects on in vivo neuronal activity in humans. Three independent placebo-controlled studies in healthy men were conducted. We observed changes in CNS activity within 15 min after intravenous administration of a physiological dose of 4 mg of cortisol (hydrocortisone). Two of the studies demonstrated a rapid bilateral thalamic perfusion decrement using continuous arterial spin labeling. The third study revealed rapid, cortisol-induced changes in global signal strength and map dissimilarity of the electroencephalogram. Our data demonstrate that a physiological concentration of cortisol profoundly affects the functioning and perfusion of the human brain in vivo via a rapid, nongenomic mechanism. The changes in neuronal functioning suggest that cortisol acts on the thalamic relay of background as well as on task-specific sensory information, allowing focus and facilitation of adaptation to challenges.