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Related Experiment Video

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Reducing State Anxiety Using Working Memory Maintenance
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Reduced representations capacity in visual working memory in trait anxiety.

Senqing Qi1, Jie Chen2, Glenn Hitchman3

  • 1MOE Key Laboratory of Modern Teaching Technology, Shaanxi Normal University, Xi'an 710062, China; MOE Key Laboratory of Cognition and Personality, Faculty of Psychology, Southwest University, Chongqing 400715, China.

Biological Psychology
|August 27, 2014
PubMed
Summary

High trait anxiety (HTA) individuals show reduced visual-spatial working memory capacity. Neural markers indicate HTA individuals utilize fewer representations in working memory compared to low trait anxiety (LTA) individuals.

Keywords:
Attentional control theoryContralateral delay activity (CDA)Trait anxietyWorking memory

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Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Psychophysiology

Background:

  • Individual differences in trait anxiety and their impact on cognitive functions like working memory remain incompletely understood.
  • Neural mechanisms underlying visual-spatial working memory (WM) capacity and its relationship with anxiety levels require further investigation.

Purpose of the Study:

  • To investigate the neural processes associated with individual differences in trait anxiety and visual-spatial working memory capacity.
  • To explore how trait anxiety influences the neural markers of memory representation.

Main Methods:

  • Utilized a lateralized change detection task to measure the contralateral delay activity (CDA).
  • Manipulated memory load levels within blocks to assess working memory capacity.
  • Compared neural activity between high trait anxious (HTA) and low trait anxious (LTA) individuals.

Main Results:

  • High trait anxious individuals exhibited altered neural markers of memory processes despite unimpaired behavioral performance.
  • CDA amplitudes reached asymptote at lower memory loads (three items) for HTA compared to LTA individuals (four items).
  • Reduced CDA amplitudes in HTA individuals under high memory loads suggest less contralateral cortical activity and fewer task-relevant representations in WM.

Conclusions:

  • High trait anxiety is associated with a reduced capacity for visual-spatial working memory representation.
  • Neural evidence suggests that individuals with high trait anxiety utilize their working memory resources more restrictively.