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Default Mode Network Maturation and Environmental Adversities During Childhood.

Keila Rebello, Luciana M Moura, Walter H L Pinaya, Luis A Rohde, João R. Sato

Chronic Stress 2018 DOI: 10.1177/2470547018808295 (opens in new tab)

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AI-extracted from the abstract
Characteristics Review Peer reviewed
Topics Default mode network
Keywords Connectivity Environmental exposure Typical brain development
Key findings The authors propose that changes in default mode network development may represent a potential allostatic neural feature reflecting the embodiment of environmental circumstances, particularly chronic childhood adversity. They also highlight the challenge of disentangling neurodevelopmental connectivity changes from those related to environmental conditions in early life.

Abstract

Default mode network (DMN) plays a central role in cognition and brain disorders. It has been shown that adverse environmental conditions impact neurodevelopment, but how these conditions impact in DMN maturation is still poorly understood. This article reviews representative neuroimaging functional studies addressing the interactions between DMN development and environmental factors, focusing on early life adversities, a critical period for brain changes. Studies focused on this period of life offer a special challenge: to disentangle the neurodevelopmental connectivity changes from those related to environmental conditions. We first summarized the literature on DMN maturation, providing an overview of both typical and atypical development patterns in childhood and early adolescence. Afterward, we focused on DMN changes associated with chronic exposure to environmental adversities during childhood. This summary suggests that changes in DMN development could be a potential allostatic neural feature associated with an embodiment of environmental circumstances. Finally, we discuss about some key methodological issues that should be considered in paradigms addressing environmental adversities and open questions for future investigations.

Comparable studies

Other narrative reviews on default mode network, most cited first.

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