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The effects of left dorsolateral prefrontal transcranial direct current stimulation on episodic future thinking following acute psychosocial stress

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2023

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De Wandel, Linde
De Smet, Stefanie
Pulopulos, Matias M.
Lemmens, Gilbert M. D.
Hidalgo, Vanesa
Salvador, Alicia
Vanderhasselt, Marie-Anne
Baeken, Chris

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Memory. Taylor & Francis. 2023, 31(3), pp. 380-392. ISSN 0965-8211. eISSN 1464-0686. Available under: doi: 10.1080/09658211.2022.2162083

Zusammenfassung

Introduction: Research on stress-related disorders and brain imaging suggests that (acute) stress might impact the capacity to mentally simulate specific episodic future events (EFT) through the effects of cortisol on brain regions supporting this cognitive function, such as the prefrontal cortices. This study aims to examine the mechanisms underlying this link, using transcranial Direct Current Stimulation (tDCS) over the left dorsolateral prefrontal cortex. Methods: 60 healthy participants were subjected to the Montreal Imaging Stress Task (MIST), followed by either active or sham tDCS. After stimulation, the EFT task was administered. Salivary cortisol was measured throughout the protocol. Results: Higher cortisol AUCi values were linked to less specific episodic future thoughts. Moreover, active tDCS enhanced EFT specificity irrespective of cortisol, especially in high trait ruminators. We did not observe an effect from active tDCS on cortisol AUCi, and equally there was no interaction effect between cortisol AUCi and stimulation condition predictive for EFT specificity. Conclusion: Although we did not find evidence for the effects of tDCS on the HPA-system, our data reveal a crucial link between two critical predictors of mental health for the first time, and provide a solution to help rehabilitate EFT deficits.

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Fachgebiet (DDC)
150 Psychologie

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Transcranial direct currentstimulation, trait rumination, cortisol, Montreal ImagingStress Task, episodic futurethinking

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ISO 690DE WANDEL, Linde, Stefanie DE SMET, Matias M. PULOPULOS, Gilbert M. D. LEMMENS, Vanesa HIDALGO, Alicia SALVADOR, Marie-Anne VANDERHASSELT, Jens C. PRUESSNER, Chris BAEKEN, 2023. The effects of left dorsolateral prefrontal transcranial direct current stimulation on episodic future thinking following acute psychosocial stress. In: Memory. Taylor & Francis. 2023, 31(3), pp. 380-392. ISSN 0965-8211. eISSN 1464-0686. Available under: doi: 10.1080/09658211.2022.2162083
BibTex
@article{DeWandel2023-02-01effec-66004,
  year={2023},
  doi={10.1080/09658211.2022.2162083},
  title={The effects of left dorsolateral prefrontal transcranial direct current stimulation on episodic future thinking following acute psychosocial stress},
  number={3},
  volume={31},
  issn={0965-8211},
  journal={Memory},
  pages={380--392},
  author={De Wandel, Linde and De Smet, Stefanie and Pulopulos, Matias M. and Lemmens, Gilbert M. D. and Hidalgo, Vanesa and Salvador, Alicia and Vanderhasselt, Marie-Anne and Pruessner, Jens C. and Baeken, Chris}
}
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Research on stress-related disorders and brain imaging suggests that (acute) stress might impact the capacity to mentally simulate specific episodic future events (EFT) through the effects of cortisol on brain regions supporting this cognitive function, such as the prefrontal cortices. This study aims to examine the mechanisms underlying this link, using transcranial Direct Current Stimulation (tDCS) over the left dorsolateral prefrontal cortex.
Methods:
60 healthy participants were subjected to the Montreal Imaging Stress Task (MIST), followed by either active or sham tDCS. After stimulation, the EFT task was administered. Salivary cortisol was measured throughout the protocol.
Results:
Higher cortisol AUCi values were linked to less specific episodic future thoughts. Moreover, active tDCS enhanced EFT specificity irrespective of cortisol, especially in high trait ruminators. We did not observe an effect from active tDCS on cortisol AUCi, and equally there was no interaction effect between cortisol AUCi and stimulation condition predictive for EFT specificity.
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