Physical activity and working memory in healthy older adults: An ERP study

Yu Kai Chang, Chung Ju Huang, Kuan Fu Chen, Tsung Min Hung

Research output: Contribution to journalArticle

43 Citations (Scopus)

Abstract

This study examined the effects of physical activity on working memory in older adults using both behavioral and neuroelectric measures. Older adults were assigned to either a higher or lower physical activity group, and event-related potentials were recorded during assessments of a modified Sternberg task. The results indicated that older adults in the higher physical activity group exhibited shorter response times, independent of the working memory load. Enhanced P3 and N1 amplitudes and a decreased P3 latency were observed in the higher physical activity group. These findings suggested that physical activity facilitates working memory by allocating more attentional resources and increasing the efficiency of evaluating the stimulus during the retrieval phase as well as engaging more attentional resources for the early discriminative processes during the encoding phase of a working memory task.

Original languageEnglish
Pages (from-to)1174-1182
Number of pages9
JournalPsychophysiology
Volume50
Issue number11
DOIs
Publication statusPublished - 2013 Jan 1

Keywords

  • Event-related potential
  • Executive function
  • Exercise
  • Fitness
  • Sternberg task

ASJC Scopus subject areas

  • Physiology
  • Neuropsychology and Physiological Psychology
  • Experimental and Cognitive Psychology
  • Physiology (medical)

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