Electroencephalogram and Heart Rate Measures of Working Memory at 5 and 10 Months of Age

UNCG Author/Contributor (non-UNCG co-authors, if there are any, appear on document)
Susan D. Calkins, Professor (Creator)
Stuart Marcovitch, Associate Professor and Head of the Department of Psychology (Creator)
The University of North Carolina at Greensboro (UNCG )
Web Site: http://library.uncg.edu/

Abstract: We recorded electroencephalogram (EEG; 6–9 Hz) and heart rate (HR) from infants at 5 and 10 months of age during baseline and performance on the looking A-not-B task of infant working memory (WM). Longitudinal baseline-to-task comparisons revealed WM-related increases in EEG power (all electrodes) and EEG coherence (medial frontal–occipital electrode pairs) at both ages. WM-related decreases in HR were only present at 5 months, and WM-related increases in EEG coherence became more localized by 10 months. Regression analyses revealed that baseline-to-task changes in psychophysiology accounted for variability in WM performance at 10 but not 5 months. HR and EEG power (medial frontal and lateral frontal electrodes) were unique predictors of variability in 10-month WM performance. These findings are discussed in relation to frontal lobe development and represent the first comprehensive longitudinal analysis of age-related changes in the behavioral and psychophysiological correlates of WM.

Additional Information

Developmental Psychology, 48(4), 907-917
Language: English
Date: 2012
EEG coherence, EEG power, Heart rate, Infants, Working memory, Electroencephalogram, Electroencephalography, Infant Development, Short Term Memory

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