The default network and self‐generated thought: component processes, dynamic control, and clinical relevance

Annals of the New York Academy of Sciences - Tập 1316 Số 1 - Trang 29-52 - 2014
Jessica R. Andrews‐Hanna1, Jonathan Smallwood2, R. Nathan Spreng3,4
1Institute of Cognitive Science, University of Colorado Boulder, Boulder, Colorado
2Department of Psychology, University of York, York, United Kingdom
3Department of Human Development, Laboratory of Brain and Cognition, Cornell University, Ithaca, New York
4Human Neuroscience Institute, Cornell University, Ithaca, New York

Tóm tắt

Though only a decade has elapsed since the default network (DN) was first defined as a large‐scale brain system, recent years have brought great insight into the network's adaptive functions. A growing theme highlights the DN as playing a key role in internally directed or self‐generated thought. Here, we synthesize recent findings from cognitive science, neuroscience, and clinical psychology to focus attention on two emerging topics as current and future directions surrounding the DN. First, we present evidence that self‐generated thought is a multifaceted construct whose component processes are supported by different subsystems within the network. Second, we highlight the dynamic nature of the DN, emphasizing its interaction with executive control systems when regulating aspects of internal thought. We conclude by discussing clinical implications of disruptions to the integrity of the network, and consider disorders when thought content becomes polarized or network interactions become disrupted or imbalanced.

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Annals of the New York Academy of Sciences

Tập 1316 Số 1

29-52

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