Working memory capacity as a moderator of load-related frontal midline theta variability in Sternberg task

Marta Zakrzewska , Aneta Brzezicka


The aim of this study was to investigate the relationship between working memory capacity (WMC) and frontal theta response to memory load in Sternberg task. We show that oscillatory activity in the theta band (4–6 Hz) related to Sternberg task performance may differentiate people characterized by high and low WMC. Specifically, there is a linear increase of frontal midline (FM) theta power with load, however, only in the high WMC group. Furthermore, a positive linear relationship was found betweenWMC (operation span task score) and average FM theta power increase from lower to higher loads which was not present at other scalp locations. The distinct patterns of high and lowWMC individual’s FM theta response to memory load seem to support the assumption that theta activity during maintenance reflects not only the amount of information stored, but also the effort it takes to remember them and the efficiency of involved neural processes. This contributes to perceiving FM theta as an individual trait which can reflect individual working memory mechanism efficiency.
Author Marta Zakrzewska
Marta Zakrzewska,,
, Aneta Brzezicka (Wydział Psychologii)
Aneta Brzezicka,,
- Wydział Psychologii
Journal seriesFrontiers in Human Neuroscience, ISSN 1662-5161, (A 35 pkt)
Issue year2014
Publication size in sheets0.5
Keywords in Englishfrontal midline theta, EEG, working memory capacity, neural efficiency, individual differences
ASJC Classification2802 Behavioral Neuroscience; 2803 Biological Psychiatry; 2738 Psychiatry and Mental health; 2808 Neurology; 3206 Neuropsychology and Physiological Psychology
Languageen angielski
Zakrzewska-Brzezicka.pdf of 14-09-2015
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Score (nominal)35
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2014 = 0.942; WoS Impact Factor: 2014 = 3.626 (2) - 2014=4.086 (5)
Citation count*50 (2021-04-09)
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