_the fundamental nature of default, executive and salience networks_
With new imaging technologies such as fMRIs, the field of neuroscience as been transformed, allowing us to leave behind old models of how the brain works and begin to develop new ones, ones that recognize the brain as a set networks tied together by a connectome.
Three primary networks were identified, the 'default' network, the 'executive control' network and the 'salience' network.
resources
Vinod Menon and Lucina Q. Uddin, Saliency, switching, attention and control: a network model of insula function 
Emily Singer, Inside a Brain Circuit, the Will to Press On
Matthias J Gruber Bernard D Gelman Charan Ranganath
States of curiosity modulate hippocampus-dependent learning via the dopaminergic circuit
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