HOME >> MEDICINE >> NEWS
New approach to imaging separates thought from perception

Miami Beach, Oct. 24, 1999 -- Using a novel approach to imaging, researchers have discovered that thinking about moving objects pre-activates areas of the brain's motion detection system before any moving objects appear. These areas would hold our expectations on-line as we prepare to cross a busy street, return a tennis serve or catch a falling child.

"This pre-activation may tune the motion detection pathway, allowing us to respond more strongly and selectively when an anticipated object appears," says Gordon L. Shulman, Ph.D., research scientist in neurology at Washington University School of Medicine in St. Louis.

Shulman and colleagues report their findings in the November issue of the Journal of Neuroscience. They will discuss additional experiments Oct. 24 and 26 during the annual meeting of the Society for Neuroscience in Miami Beach, Fla. "You could use this method anytime you wanted to separate the processes that prepare you to do a task from those involved in executing that task," Shulman says.

A major stumbling block has hampered attempts to understand how cognitive expectations such as goals, memories and thoughts influence the way we see the world. Because images obtained through positron emission tomography (PET) could not be made in less than 40 seconds, they merged expectation with perception. But the advent of functional magnetic resonance imaging (fMRI) cut the time scale to a few seconds. Using BOLD fMRI, Shulman and colleagues have devised a way to obtain separate images of expectation and perception during a single trial. For example, they can obtain one set of images while a person anticipates a visual stimulus and a second set when the stimulus appears.

"This enhanced precision in human neuroimaging allows us to track the sequential involvement of different areas of the brain at different times during a task," says co-author Maurizio Corbetta, M.D., assistant professor of neurology,
'"/>

Contact: Linda Sage
sage@medicine.wustl.edu
314-286-0119
Washington University School of Medicine
23-Oct-1999


Page: 1 2 3

Related medicine news :

1. OHSU scientists develop MRI approach to improve breast cancer detection
2. Trial reveals safer and simpler approach to treating children with cystic fibrosis
3. Services for children: Training needed to tackle complexity of new labours joined-up approach
4. Government approach to cutting hospital stays may be misleading
5. Is the 3 by 5 initiative the best approach to tackling the HIV pandemic?
6. Animal study suggests safer immunization approach to Alzheimers
7. Worldwide approach tackles kidney disease
8. Texas Childrens Hospital specialists say proactive approach best defense against flu season
9. Endoscopic approach best for repairing bone defect between brain, nasal cavity
10. University of Pittsburgh approach has lung recipients taking far fewer drugs
11. Tissue involved in brain development may offer new approach to stroke treatment

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


(Date:12/2/2016)... ... December 02, 2016 , ... CloudLIMS.com, a class-leading ... LIMS, CloudLIMS Lite. CloudLIMS Lite helps biobanks, clinical, research and testing laboratories keep ... disposal. The new version is a faster and a more efficient product, allowing ...
(Date:12/2/2016)... Cleveland, OH (PRWEB) , ... December 02, 2016 ... ... provider of veterinarian diagnostic imaging systems and the first company to ... Robot With a Heart at their tradeshow booth # 941 for the American ...
(Date:12/2/2016)... PA (PRWEB) , ... December 02, 2016 , ... Rijuven ... stress and overall health, day and night. No other wearable health technology on the ... We wanted to give poeple more meaningful insights about their health than the ...
(Date:12/2/2016)... ... , ... "Pro3rd Accents Volume 2 is a set of 30 accented lower ... just a few clicks of the mouse," said Christina Austin - CEO of Pixel ... from various styles with accented animations, rigid boxes, simplistic lines, and more. In Addition, ...
(Date:12/2/2016)... Miami, FL (PRWEB) , ... December 02, 2016 ... ... over 5,100 hot meals to needy individuals and families from eight different sites ... Florida on Thanksgiving Day. Over 1,000 volunteers worked very hard on Thanksgiving morning ...
Breaking Medicine News(10 mins):
(Date:11/30/2016)... 2016 Research and Markets has ... Neuromodulation, Neurovascular, Neurosurgical and Monitoring Devices 2017 - MedView" ... ... The full report suite on the U.S. market for neurological ... intracranial pressure monitoring devices, detachable coils, liquid embolics, catheters, guidewires, ...
(Date:11/30/2016)... -- Millennium Dental Technologies, Inc. announced that it has again filed ... the State of California , County of ... California,s Uniform Trade Secrets act, Unfair Competition ... which are untrue and misleading, as well as other wrongdoings ... second time in three years that Millennium found it necessary ...
(Date:11/30/2016)... November 30, 2016 Global Negative Pressure Wound Therapy Devices Market ... from 2016 to 2022, according to new research published by Allied Market Research. ... industry. The conventional NPWT devices segment is expected to maintain its lead throughout the ... ... Allied Market Research Logo ...
Breaking Medicine Technology:
Cached News: