The default network and self-generated thought: component processes, dynamic control, and clinical relevance
TLDR
Evidence is presented that self‐generated thought is a multifaceted construct whose component processes are supported by different subsystems within the network, and clinical implications of disruptions to the integrity of the network are discussed.Abstract:
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.read more
Citations
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The Science of Mind Wandering: Empirically Navigating the Stream of Consciousness
TL;DR: Examination of the information-processing demands of the mind-wandering state suggests that it involves perceptual decoupling to escape the constraints of the moment, its content arises from episodic and affective processes, and its regulation relies on executive control.
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Interoceptive predictions in the brain
TL;DR: The Embodied Predictive Interoception Coding model is introduced, which integrates an anatomical model of corticocortical connections with Bayesian active inference principles, to propose that agranular visceromotor cortices contribute to interoception by issuing interoceptive predictions.
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Mind-wandering as spontaneous thought: a dynamic framework
Kalina Christoff,Zachary C. Irving,Kieran C. R. Fox,R. Nathan Spreng,Jessica R. Andrews-Hanna +4 more
TL;DR: It is proposed that mind-wandering is best understood as a member of a family of spontaneous-thought phenomena that also includes creative thought and dreaming, and can shed new light on mental disorders that are marked by alterations in spontaneous thought, including depression, anxiety and attention deficit hyperactivity disorder.
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Creative Cognition and Brain Network Dynamics
TL;DR: This research suggests that creative thought involves dynamic interactions of large-scale brain systems, with the most compelling finding being that the default and executive control networks tend to cooperate during creative cognition and artistic performance.
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Intrinsic architecture underlying the relations among the default, dorsal attention, and frontoparietal control networks of the human brain
TL;DR: In this paper, the authors used graph theory to analyze network properties of intrinsic functional connectivity within and between these three large-scale networks, and found that the frontoparietal control network plays a pivotal gate-keeping role in goal-directed cognition, mediating the dynamic balance between default and dorsal attention networks.
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