Cited by 483Stress Responses and CortisolCognitive Abilities and TestingNeural and Behavioral Psychology Studies

Psychosocial stress induces working memory impairments in an n-back paradigm.

Schoofs, Daniela, Preuß, Diana, Wolf, Oliver T.·2008·Psychoneuroendocrinology

Abstract

In contrast to the substantial number of studies investigating the effects of stress on declarative memory, effects of stress on working memory have received less attention. We compared working memory (numerical n-back task with single digits) in 40 men exposed either to psychosocial stress (Trier Social Stress Test (TSST)) or a control condition. Task difficulty was varied using two conditions (2-back vs. 3-back). Salivary cortisol (as a marker of hypothalamus-pituitary-adrenal (HPA) activity) and salivary alpha-amylase (sAA as a marker of sympathetic nervous system (SNS) activity) were assessed immediately before and three times after the stress or control condition. As expected stress resulted in an increase in cortisol, sAA, and negative affect. Subjects exposed to stress showed significant working memory impairments in both workload conditions. The analysis of variance indicated a main effect of stress for reaction time as well as accuracy. In addition, for reaction time a stress-block interaction occurred. Follow up tests revealed that only during the first block at each level of difficulty performance was significantly impaired by stress. Thus, the effects of stress became smaller the longer the task was performed. Results provide further evidence for impaired working memory after acute stress and illustrate the time course of this phenomenon.

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Crossref · 10.1016/j.psyneuen.2008.02.004

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  • In humans experimental or pharmacological stress studies have reported inconsistent effects with impairments as well as enhancements.

    “In humans experimental or pharmacological stress studies have reported inconsistent effects with impairments as well as enhancements being reported [42], [46], [47].”
  • The computerized n-back paradigm (2-back version) is a well-evaluated sensitive tool to analyze working memory functions.

    “Thus, in the current study we employed a computerized n-back paradigm (2-back version), a well-evaluated sensitive tool to analyze working memory functions [34], [41], [42].”

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Authors
Schoofs, D., Preuß, D., & Wolf, O. T.
Affiliations
Ruhr University Bochum (DE)
Corresponding author
Wolf, Oliver T.
Venue
Psychoneuroendocrinology
Publisher
Elsevier BV
Published
2008-06
Volume
33
Issue
5
Pages
643-653
ISSN
0306-4530 (ISSN-L)
OpenAlex
W2106673407
Cited by
483
References
93
Citations by year
2026: 13 · 2025: 19 · 2024: 20 · 2023: 22 · 2022: 34 · 2021: 36 · 2020: 37 · 2019: 35 · 2018: 26 · 2017: 27 · 2016: 40 · 2015: 24 · 2014: 29 · 2013: 27 · 2012: 21
FWCI
11.00
Type
journal article
Language
en
Open access
closed
Locations
  • Psychoneuroendocrinology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Deutsche Forschungsgemeinschaft
  • Universität Bielefeld
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Abilities and Testing
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
Keywords
psychosocial stress, working memory, n-back task, Trier Social Stress Test, salivary cortisol, salivary amylase, hypothalamic-pituitary-adrenal axis, sympathetic nervous system, negative affect, acute stress, task difficulty, reaction time, cognitive performance
MeSH terms
Adult, Affect, alpha-Amylases, Analysis of Variance, Humans, Hydrocortisone, Male, Memory, Memory Disorders, Reaction Time, Saliva, Stress, Psychological, Task Performance and Analysis, Time Factors

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