HOME >> MEDICINE >> NEWS
Magnetic resonance imaging deconstructs brain's complex network

A team headed by scientists at Northwestern University, using functional magnetic resonance imaging (fMRI), has shown how to visualize the human brain as a massive, interacting, complex network governed by a few underlying dynamic principles.

The research opens fascinating possibilities for future basic and applied studies to investigate the dynamics of brain states, particularly in cases of dysfunction -- such as schizophrenia, Alzheimer's disease and chronic pain -- without requiring external markers.

Dante R. Chialvo, research associate professor of physiology at Northwestern University Feinberg School of Medicine, led the study, which appeared in the Dec. 31 online issue of the journal Physical Review Letters. The research group included scientists from the IBM T.J. Watson Research Center, Yorktown Heights, N.Y., and the University of Islas Baleares, Mallorca, Spain.

Chialvo and colleagues described how fMRIs from healthy individuals showed that tens of thousands of discrete brain regions form a network that has the same qualitative features as other complex networks, such as the Internet (technological), friendships (social) and metabolic (biochemical) networks.

The fMRI technology provided, in each recording session, hundreds of consecutive images of brain activity discretized in thousands of tiny cubes (voxels). The image intensity at each cube usually indicates the amount of brain activity at that site.

The investigators then calculated the degree of correlation between the activities among the tens of thousands of brain regions. Through their computations, the group discovered which brain regions were momentarily "linked" in a "network."

When they further analyzed the structure of these networks, they saw a familiar picture: Brain networks share the features of other complex networks, such as the Internet -- very few "jumps" were necessary for connecting any two nodes.

"This so-called 'small world' prop
'"/>

Contact: Elizabeth Crown
e-crown@northwestern.edu
312-503-8928
Northwestern University
4-Jan-2005


Page: 1 2

Related medicine news :

1. Magnetic bracelets reduce the pain of osteoarthritis
2. Magnetic resonance imaging helps detect breast cancer but does not eliminate need for biopsy
3. Magnetic treatment may help people with spinal cord injuries
4. Magnetic fluids offer hope for damaged retinas
5. Magnetic stimulation may be as effective as electroconvulsive therapy in treating severe depression
6. Magnetic Surgery System Tested Successfully On First Patient
7. Magnetic Hearing Aid Could Open New "Window" For Hearing Impaired
8. Transcranial Magnetic Stimulation Enhances Short-Term Brain Plasticity
9. How brain gives special resonance to emotional memories
10. SU scientist receives patent that could revolutionize medical magnetic resonance imaging
11. 3-D magnetic resonance imaging safer way to diagnose heart disease

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:9/3/2020)... ... September 03, 2020 , ... BluePearl Specialty and ... Suicide Prevention’s (AFSP) annual signature event, Out of the Darkness (OOTD), which unites ... to raise awareness of suicide prevention. To ensure Associate safety, BluePearl will not ...
(Date:9/2/2020)... ... September 02, 2020 , ... RAM ... payers administering Medicare Advantage and Special Needs plans, is proud to support the ... Insurance Plans (AHIP). RAM is supporting the event as a sponsor and exhibitor ...
(Date:9/1/2020)... ... September 01, 2020 , ... Dr. ... training in aesthetic surgery of the face, breast, and body. In 2018, she ... premier boutique plastic surgery and aesthetic practice in Southwest Florida. Dr. Gill and ...
(Date:8/31/2020)... ... August 31, 2020 , ... Want to get moving, ... Palsy Alliance Research Foundation (CPARF) is thrilled to launch its fourth annual STEPtember campaign ... fully virtual challenge, STEPtember meets everyone wherever they are at this moment — encouraging ...
(Date:8/31/2020)... ... 31, 2020 , ... A Cure for Covid-19 “PTS” with Mediation & Hypnosis , At ... a state of panic, experiencing deep anxiety, immense stress, and right now are needing serious ... when most people on the planet are experiencing a great degree of emotional discomfort, be ...
Breaking Medicine News(10 mins):
(Date:8/31/2020)... PHOENIX (PRWEB) , ... August 31, 2020 , ... ... Mobile Sanitizing and Disinfecting - a broad-spectrum sanitization, disinfection and deodorization provider ... company will offer door-to-door sanitizing and disinfecting services for businesses and residents throughout ...
(Date:8/27/2020)... ... August 27, 2020 , ... InfoMC, a leading provider of ... their 2020 System and Organizational Controls (SOC) 1® Type 2 and SOC 2® ... assessment. These achievements reflect their long-standing commitment to privacy, security, and risk management, ...
(Date:8/27/2020)... ... August 27, 2020 , ... Bridge To A Cure Foundation ... is an adult and pediatric neuro-oncologist who serves on the Board of Directors at ... at Duke University Medical School. , Internationally recognized, Dr. Friedman is a widely published ...
Breaking Medicine Technology:
Cached News: