journal article Apr 01, 2002

Frontal theta activity in humans increases with memory load in a working memory task

European Journal of Neuroscience Vol. 15 No. 8 pp. 1395-1399 · Wiley
View at Publisher Save 10.1046/j.1460-9568.2002.01975.x
Abstract
AbstractRecent theoretical work has suggested that brain oscillations in the theta band are involved in active maintenance and recall of working memory representations. To test this theoretical framework we recorded neuromagnetic responses from 10 subjects performing the Sternberg task. Subjects were required to retain a list of 1, 3, 5 or 7 visually presented digits during a 3‐s retention period. During the retention period we observed ongoing frontal theta activity in the 7–8.5‐Hz band recorded by sensors over frontal brain areas. The activity in the theta band increased parametrically with the number of items retained in working memory. A time–frequency analysis revealed that the task‐dependent theta was present during the retention period and during memory scanning. Following the memory task the theta activity was reduced. These results suggest that theta oscillations generated in frontal brain regions play an active role in memory maintenance.
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References
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1,153
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35
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Details
Published
Apr 01, 2002
Vol/Issue
15(8)
Pages
1395-1399
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Cite This Article
Ole Jensen, Claudia D. Tesche (2002). Frontal theta activity in humans increases with memory load in a working memory task. European Journal of Neuroscience, 15(8), 1395-1399. https://doi.org/10.1046/j.1460-9568.2002.01975.x
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