Navigation Links
Tracing broken wiring in stroke patients

Researchers have used a technique to trace the functional disruption in brain circuitry that causes stroke patients to show a lack of awareness or response to the side of the body opposite to the side of the stroke lesion in the brain. The researchers said their findings shed new light on the neurological details of this "spatial neglect." Their findings also demonstrate the value of the magnetic resonance imaging (MRI) technique for studying how disruption in brain circuitry produces behavioral symptoms.

Maurizio Corbetta and colleagues reported their findings in the March 15, 2007 issue of the journal Neuron, published by Cell Press.

The researchers used "functional connectivity" MRI (FC MRI) to examine connections between active regions of the brain. MRI is a widely used analytical technique, in which harmless radio waves and magnetic fields are used to map oxygen levels in brain regions. By performing FC MRI in patients with spatial neglect, the authors identified regions of the brain where there was a disruption of normal functional brain circuitry.

In their experiments, the researchers used FC MRI to study the brains of 11 stroke patients with neglect, both at one month and at more than six months after their strokes. While the patients' brains were being scanned, the researchers asked them to perform a simple task to determine their ability to perceive the left and right visual fields. Specifically, the patients were asked to indicate whether they could see an asterisk presented on the right or left side of a computer screen. As a control, the researchers also conducted similar tests on healthy volunteers.

The study revealed new details about how functional connectivity within and between different regions of the "attention networks" in the parietal cortex of the brain was disrupted in the brains of the stroke patients. The study also enabled new insights into how this disruption contributes to spatial neglect.

P
'"/>

Source:Cell Press


Page: 1 2

Related biology news :

1. Tracing the formation of long-term memory
2. Single stem cells from bone heal a broken heart
3. Nanotubes inspire new technique for healing broken bones
4. UCLA imaging study of children with autism finds broken mirror neuron system
5. UT Southwestern researchers find gene mutation that leads to broken hearts
6. How fish mend a broken heart
7. Examination of internal wiring of yeast, worm, and fly reveals conserved circuits
8. A puzzle piece found in unraveling the wiring of the brain
9. Scientists crack code for motor neuron wiring
10. Yale scientists decipher wiring pattern of cell signaling networks
11. Hard-wiring the fruit flys visual system
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Tracing broken wiring stroke patients

(Date:4/23/2014)... ravens form different types of social relationships they ... form strict dominance relations. From a cognitive perspective, understanding ... in daily social life ("knowing who is nice or ... with each other sets the stage for "political" maneuvers ... study have been published in the scientific journal ...
(Date:4/23/2014)... can argue that if we were to follow a strong ... canthen we can solve the climate problem without doing geoengineering." ... researchers, in the current issue of Bulletin of the ... action on climate change now makes it more likely that ... explains in an exclusive Bulletin interview. , ...
(Date:4/22/2014)... a five-year, $3 million study to determine whether an ... of dissolved organic matter (DOM) through the Connecticut River ... composition and water quality of the watershed and Long ... Foundation,s MacroSystems Biology program, researchers will collect data from ... Canada and runs through five U.S. states, before emptying ...
Breaking Biology News(10 mins):Ravens understand the relations among others 2Is nuclear power the only way to avoid geoengineering? 2Connecticut River watershed study will assess impacts of extreme rain events 2Connecticut River watershed study will assess impacts of extreme rain events 3
... Society of Interventional Radiology, an international organization of ... improving public health through minimally invasive, image-guided treatments, ... Veins" coalition, an alliance of organizations united to ... veins and chronic venous insufficiency. "Becoming part ...
... and deaths linked to those products are fostering new ... to the cover story in the current edition of ... of the American Chemical Society, the world,s largest scientific society. ... stories have surfaced with increasing frequency in recent years about ...
... the cross-country ski run. Things are looking good for him. Up ... best time. However, whether or not he finishes first is often ... must be right, including the conditions on the cross-country ski run, ... adapted custom-fit skis. In contrast to Olympic skiing stars who are ...
Cached Biology News:Society of Interventional Radiology: Time to rethink varicose veins 2Optimized custom-made ski sledges 2Optimized custom-made ski sledges 3
(Date:1/15/2014)... SAN JOSE, California , January 15, 2014 ... antibody-drug conjugates for cancer, today announced the appointment of Thomas ... Reynolds has over 20 years, development experience gained in the ... Genetics. "I am delighted to welcome Tom at ...
(Date:1/15/2014)... 2014 More than 5 million Americans ... in 3 seniors will die with Alzheimer’s or another ... figures have shocked many Americans into looking for ways ... these tragic age-related cognitive disorders. Jonathan Weisman, president of ...
(Date:1/15/2014)... Scottsdale, Arizona (PRWEB) January 15, 2014 ... growth for Scottsdale’s Brain State Technologies®. They saw continued ... University Medical Center who were awarded a $1 million ... papers published in “Brain and Behavior” a peer reviewed ...
(Date:1/14/2014)... 14, 2014 Date: Friday, April 11, 2014 ... Country Club, 1360 Almshouse Road, Warrington, Pa. , ... solely dedicated to finding a cure for hepatitis B and ... host its annual Crystal Ball on Friday, April 11 at ...
Breaking Biology Technology:Oxford BioTherapeutics Appoints Thomas C Reynolds MD, PhD to its Board of Directors 2Oxford BioTherapeutics Appoints Thomas C Reynolds MD, PhD to its Board of Directors 3Biohack Pure Offers 5 Tips for Increasing Memory in 2014 2Dynamic Innovative Technology Showcased at Scottsdale Company’s Open House 2Dynamic Innovative Technology Showcased at Scottsdale Company’s Open House 3Hepatitis B Foundation to Host Annual Crystal Ball Gala 2
... Alexza,Pharmaceuticals, Inc. (Nasdaq: ALXA ) ... a primary focus on the continued rapid development ... workforce reduction,of 52 employees, representing approximately 33% of ... Endo Pharmaceuticals, Inc. have agreed to,mutually terminate their ...
... enterprise accounting system across its US & China-based ... Alternext US: ADL), a vertically integrated pharmaceutical company ... today it is implementing a state-of-the-art, westernized enterprise ... , , Developed by ...
... Amicus Therapeutics (Nasdaq: FOLD ) will announce ... the regular close of markets on Thursday, February 5, ... live conference call and webcast that afternoon at 5 ... conference call at 5 p.m. EST by dialing 877-675-4756 ...
Cached Biology Technology:Alexza Consolidates Operations to Focus Resources on AZ-004 (Staccato(R) Loxapine) for Acute Agitation 2Alexza Consolidates Operations to Focus Resources on AZ-004 (Staccato(R) Loxapine) for Acute Agitation 3Alexza Consolidates Operations to Focus Resources on AZ-004 (Staccato(R) Loxapine) for Acute Agitation 4AMDL First to Implement US & China-Based, GAAP-Certified Accounting Technology to Capitalize on Lucrative China Healthcare Market 2AMDL First to Implement US & China-Based, GAAP-Certified Accounting Technology to Capitalize on Lucrative China Healthcare Market 3AMDL First to Implement US & China-Based, GAAP-Certified Accounting Technology to Capitalize on Lucrative China Healthcare Market 4Amicus Therapeutics Announces Fourth Quarter and Year End 2008 Financial Results Release Date 2
7G10 anti-Fasciclin III...
Rabbit polyclonal to P5 ( Abpromise for all tested applications). entrezGeneID: 10954 SwissProtID: Q14554...
Goat polyclonal to HA1 ( Abpromise for all tested applications). Antigen: Synthetic peptide: TLGSCRERQPEFV from the C terminus of human HA1. Entrez GeneID: 23526 Swiss Protein ID: O78181...
ATP-binding cassette sub-family D member 4 (Peroxisomal membrane protein 69) (PMP69) (Peroxisomal membrane protein 1-like) (PXMP1-L) (P70R). [Source:Uniprot/SWISSPROT;Acc:O14678] Antigen: Recombi...
Biology Products: