Journal
NEUROIMAGE
Volume 32, Issue 2, Pages 978-987Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.neuroimage.2006.02.018
Keywords
theta; EEG oscillations; recognition memory; decision making; working memory; gamma
Funding
- NIMH NIH HHS [MH64812, MH062196, MH61975] Funding Source: Medline
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Studies of memory retrieval have identified electroencephalographic (EEG) correlates of a test item's old-new status, reaction time, and memory load. In the current study, we used a multivariate analysis to disentangle the effects of these correlated variables. During retrieval, power of left-parietal theta (4-8 Hz) oscillations increased in proportion to how well a test item was remembered, and theta in central regions correlated with decision making. We also studied how these oscillatory dynamics complemented event-related potentials. These findings are the first to demonstrate that distinct patterns of theta oscillations can simultaneously relate to different aspects of behavior. (c) 2006 Elsevier Inc. All rights reserved.
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