The task-positive network (TPN), also known as the dorsal attention network (DAN), is one of two sensory orienting systems in the human brain, the other being the task-negative network. It is involved in voluntary (top-down) orienting and shows activity increases after presentation of cues indicating where, when, or to what subjects should direct their attention.
During rest the TPN has been claimed to subserve intermittent “external awareness”, defined as the conscious perception through different sensory modalities of one`s surrounding environment.
During performance of attention-demanding tasks, prefrontal and parietal structures comprising the task-positive network are characterized by increases in activation; in contrast, default mode network structures, including posterior cingulate and medial prefrontal cortices, are characterized by decreased activity. During wakeful rest, the opposite pattern emerges, with the default mode network becoming more active and the task-positive network less active. 
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