default network

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default network2016-12-25T09:36:35+00:00

default network

default network image from New Medical Terms

default network

ANATOMY, NEUROLOGY

A collection of brain regions which deactivate during goal-directed activities and are more active at a baseline or resting state.

Some workers believe that the default network is required for task-independent introspection, or self-referring thought, while the task-positive or task-specific network is linked to action.

Functional connectivity (coherence of neural activity) is increased in patients with dysthymia and major depressive disorder; this normalises with duloxetine, a serotonin-norepinephrine reuptake inhibitor, an antidepressant, when compared to a placebo. 

Synonyms Default mode network, default state network, DMN, task-negative network 

References JAMA Psychiatry 2013; 70:373-382
http://en.wikipedia.org/wiki/Default_network
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