Journal
VISION RESEARCH
Volume 110, Issue -, Pages 1-6Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.visres.2015.01.028
Keywords
P3; PCA; Change detection task; Visual working memory; Event-related potentials
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Funding
- National Science Foundation [NSF MRI-R2 0958874]
- Ohio Board of Regents
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Previous research using the change detection task has found little or no relationship between P3 amplitude and working memory load. This contrasts with findings from other paradigms that indicate a decrease in P3 amplitude with increases in working memory load. We adopted a principal component analysis strategy to resolve this discrepancy. After ERPs were decomposed, the P3 component decreased in amplitude when the memory load increased. Its amplitude was also associated with individuals' working memory capacity. In conclusion, P3 plays a critical role in change detection task as it does in other working memory tasks. (C) 2015 Elsevier Ltd. All rights reserved.
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