Intrinsic Connectivity Networks: more than just DMN

fMRI has become an important investigation and research tool in trying to locate neural correlates of a function X,Y,Z in the brain. However notwithstanding the allure of seductive neuroscan images, fMRI studies at times leaves us as clueless about the brain and its organization as we were before the studies were conducted. However , just […]

The Neural Substrates of Personality

Personality is the study of individual differences, mostly in humans, though some work in animal personality too has happened. While evolution has designed for some universal adaptations, that lead to say human universals, evolution has also maintained some variations which leads to individual differences. Personality traits are stable and consistent patterns of responding in terms […]

Intrinsic connectivity Networks: Neurodegenerative link

In my last 3 posts, I have talked about ICNs and how they change over developmental time-frame and how many basic ICNs we have in the adult human brain.  This post will talk about neuroegenerative diseases like Alzheimer’s and how the underlying atrophy in neurodegenrative networks closely resembles the underlying ICNs and SCNs. But first […]

Intrinsic Connectivity Networks: the adult form

In my last two posts I introduced the concept of ICNs and the form they take over developmental time-frame. This post focuses on the most common and consistent ICNs that have been found in the adult humans. To recap, ICNs are found by Independent Component Analysis (ICA) of Resting state functional connectivity MRI (rs-fcMRI) and […]

Intrinsic Connectivity Networks: developmental time course

In my last post I introduced the mouse trap readers to ICNs , ICA and the rs-fcMRI (resting state Functional connectivity fMRI) procedure that is used to detect such networks. This post extends that exciting line of work by commenting on 3 papers that list the ICNs found in the developing brain (infant, child , […]

Two views of brain function: Reflexive/reactive or Intrinsic/proactive?

Image via Wikipedia Marcus Raichle, who had initially discovered the default brain network, has a new review article in TICS, that argues that brain activity should be understood as primarily an intrinsic and proactive process rather than a reflexive or reactive process. He bases this argument on the fact that resting brain consumes 20 % […]

Neural correlates of conscious access: implications for autism/psychosis

Image via Wikipedia There is a recent article in New Scientist about consciousness and its neural correlates and the article focuses on work of Stanislas Deheane and his colleagues and how they are trying to get evidence and proof for the Global workspace theory of consciousness as proposed by Beranrd Baars. That led me to […]