Default Network

Sweet, Lawrence H.

doi:10.1007/978-3-319-57111-9_1284

Lawrence H. Sweet⁴

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Synonyms

Default mode network; Task-negative network

Definition

The default network is a system of brain regions that is active when there are no external cognitive demands. The greatest brain activity is observed in this system during unstructured rest, and the least activity is observed during tasks that require concerted external focus. The existence and core location of the default network are widely accepted; however, its function and subsystems remain under investigation. The default network is distributed bilaterally and is comprised of at least two core midline regions, the posterior cingulate cortex and medial frontal gyrus, plus the inferior parietal lobule and areas in the medial and lateral temporal lobe.

Historical Background

Identification of the default network emerged unexpectedly from functional neuroimaging studies that administered paradigms with a variety of active cognitive challenges. Functional neuroimaging designs frequently sample brain activity during resting...

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References and Readings

Buckner, R. L., Andrews-Hanna, J. R., & Schacter, D. L. (2008). The brain’s default network: Anatomy, function, and relevance to disease. Annals of the New York Academy of Sciences, 1124, 1–38.
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Authors and Affiliations

Department of Psychology, University of Georgia, Athens, GA, USA
Lawrence H. Sweet

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Lawrence H. Sweet
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Correspondence to Lawrence H. Sweet .

Editor information

Editors and Affiliations

Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University, Richmond, VA, USA
Jeffrey S. Kreutzer
Kessler Foundation, Pleasant Valley Way, West Orange, NJ, USA
John DeLuca
Independent Practice, Wynnewood, PA, USA
Bruce Caplan

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Sweet, L.H. (2018). Default Network. In: Kreutzer, J.S., DeLuca, J., Caplan, B. (eds) Encyclopedia of Clinical Neuropsychology. Springer, Cham. https://doi.org/10.1007/978-3-319-57111-9_1284

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DOI: https://doi.org/10.1007/978-3-319-57111-9_1284
Published: 20 September 2018
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-57110-2
Online ISBN: 978-3-319-57111-9
eBook Packages: Behavioral Science and PsychologyReference Module Humanities and Social SciencesReference Module Business, Economics and Social Sciences

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