Rethinking Cognitive Load: A Default-Mode Network Perspective

Brain's Default Mode Network

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: cognitive role and pathological disturbances].

INTRODUCTION A "resting state" or "default mode network" has been highlighted in functional neuroimaging studies as a set of brain regions showing synchronized activity at rest or in task-independent cognitive state. STATE OF THE ART A considerable and increasing number of studies have been conducted over the last few years so as to unravel the cognitive function(s) of this brain network. P...

Informing: A Cognitive Load Perspective

In instructional psychology, cognitive load theory has applied knowledge of processing limitations of human cognitive system to enhance effectiveness of instructional procedures and information presentation formats. Underlying assumptions and principles of cognitive load theory are based on a recently proposed evolutionary perspective that regards both human cognitive architecture and biologica...

Spontaneous Brain Activity in the Default Mode Network Is Sensitive to Different Resting-State Conditions with Limited Cognitive Load

BACKGROUND Recent functional MRI (fMRI) studies have demonstrated that there is an intrinsically organized default mode network (DMN) in the resting brain, primarily made up of the posterior cingulate cortex (PCC) and the medial prefrontal cortex (MPFC). Several previous studies have found that the DMN is minimally disturbed during different resting-state conditions with limited cognitive deman...