Default mode network (default state network of the brain)

Brain's Default Mode Network

Consistency and functional specialization in the default mode brain network.

The notion of a "default mode of brain function" has taken on certain relevance in human neuroimaging studies and in relation to a network of lateral parietal and midline cortical regions that show prominent activity fluctuations during passive imaging states, such as rest. In this study, we perform three fMRI experiments that demonstrate consistency and specialization in the default mode netwo...

Default Mode Network: Granger causality characterization of cognitive state changes

Introduction Characterization of the default mode network (DMN) as a complex network of functionally interacting dynamic systems has received great interest for the study of its neural mechanisms [1-4]. However, it is still unclear how DMN sub-regions interact during resting state and how these interactions change when performing a task. Granger causality can be used to explore causal relations...

The Default Mode Network in Autism.

Autism spectrum disorder (ASD) is characterized by deficits in social communication and interaction. Since its discovery as a major functional brain system, the default mode network (DMN) has been implicated in a number of psychiatric disorders, including ASD. Here we review converging multimodal evidence for DMN dysfunction in the context of specific components of social cognitive dysfunction ...

Emotional faces and the default mode network.

The default-mode network (DMN) of the human brain has become a central topic of cognitive neuroscience research. Although alterations in its resting state activity and in its recruitment during tasks have been reported for several mental and neurodegenerative disorders, its role in emotion processing has received relatively little attention. We investigated brain responses to different categori...