Neural oscillations associated with the primacy and recency effects of verbal working memory

Massoud Stephane, Nuri F. Ince, Michael Kuskowski, Arthur Leuthold, Ahmed H. Tewfik, Katie Nelson, Kate McClannahan, Charles R. Fletcher, Vijay Aditya Tadipatri

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

For sequential information, the first (primacy) and last (recency) items are better remembered than items in the middle of the sequence. The cognitive operations and neural correlates for the primacy and recency effects are unclear. In this paper, we investigate brain oscillations associated with these effects. MEG recordings were obtained on 19 subjects performing a modified Sternberg paradigm. Correlation analyses were performed between brain oscillatory activity and primacy and recency indices. Oscillatory activity during information maintenance, not encoding, was correlated with the primacy and recency effects. The primacy effect was associated with occipital post-desynchrony, and temporal post-synchrony. The recency effect was associated with parietal and temporal desynchrony. Differences were also observed according to the maintenance strategy. These data indicate that the primacy and recency effects are related to different neural, and likely cognitive, operations that are dependant on the strategy for information maintenance.

Original languageEnglish (US)
Pages (from-to)172-177
Number of pages6
JournalNeuroscience Letters
Volume473
Issue number3
DOIs
StatePublished - Apr 2010

Bibliographical note

Funding Information:
Supported by grants from the VA Medical Center, the MIND institute, and Martha and William Muska Foundation.

Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.

Keywords

  • MEG
  • Oscillations
  • Primacy effect
  • Recency effect
  • Working memory

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