HOME >> MEDICINE >> NEWS
Who's the liar? Brain MRI stands up to polygraph test

Traditional polygraph tests to determine whether someone is lying may take a back seat to functional magnetic resonance imaging (fMRI), according to a study appearing in the February issue of Radiology. Researchers from Temple University Hospital in Philadelphia used fMRI to show how specific areas of the brain light up when a person tells a lie.

"We have detected areas of the brain activated by deception and truth-telling by using a method that is verifiable against the current gold standard method of lie detection--the conventional polygraph," said lead author Feroze B. Mohamed, Ph.D., Associate Professor of Radiology at Temple.

Dr. Mohamed explained how the standard polygraph test has failed to produce consistently reliable results, largely because it relies on outward manifestations of certain emotions that people feel when lying. These manifestations, including increased perspiration, changing body positions and subtle facial expressions, while natural, can be suppressed by a large enough number of people that the accuracy and consistency of the polygraph results are compromised.

"Since brain activation is arguably less susceptible to being controlled by an individual, our research will hopefully eliminate the shortcomings of the conventional polygraph test and produce a new method of objective lie detection that can be used reliably in a courtroom or other setting," Dr. Mohamed said.

Dr. Mohamed and colleagues recruited 11 healthy subjects for the study. A mock shooting was staged, in which blank bullets were fired in a testing room. Five volunteers were asked to tell the truth when asked a series of questions about their involvement, and six were asked to deliberately lie. Each volunteer was examined with fMRI to observe brain activation while they answered questions either truthfully or deceptively. They also underwent a conventional polygraph test, where respiration, cardiovascular activity and perspiration responses were mon
'"/>

Contact: Heather Babiar
hbabiar@rsna.org
630-590-7762
Radiological Society of North America
31-Jan-2006


Page: 1 2

Related medicine news :

1. Whos vCJD case definition should be revised
2. Whos available to help in times of crisis and disaster?
3. Brain-boosting pill alleviates post-chemotherapy fogginess
4. Brain inflammation may be friend, not foe, for Alzheimers patients
5. Brain activity reflects differences in types of anxiety
6. Brain research poised to dramatically advance global society
7. Elsevier announces launch of Brain Stimulation
8. Brains scans of symptomatic Gulf War veterans show differences
9. Brain structure changes years before memory loss begins
10. Brain studies reveal the mechanisms of the voluntary control of visual attention
11. Brains can recover from alcoholic damage but patients should stop drinking as soon as possible

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


(Date:2/13/2016)... ... February 13, 2016 , ... Good news for ... in the area to offer AngioPlex™ Optical Coherence Tomography (OCT) Angiography, imaging technology ... macular degeneration, diabetic retinopathy, and other vascular conditions. , In just a few ...
(Date:2/13/2016)... ... ... With FCPX Overlay Embers from Pixel Film Studios users can now apply ... user can select from up to 40 effect overlays. With FCPX Overlay Embers users ... value, contrast, glow, and more all within a click of a mouse. , ...
(Date:2/13/2016)... (PRWEB) , ... February 13, 2016 , ... In the ... forward. They’ll groom themselves to perfection, go out of their way to be romantic, ... – just take a look at any online dating profile. , A recent ...
(Date:2/12/2016)... ... February 12, 2016 , ... ... initiative—the Siemens Foundation-PATH Ingenuity Fellowships—to develop the advanced skills needed to introduce ... from U.S. universities who will draw from Siemens’ deep knowledge of product ...
(Date:2/12/2016)... , ... February 12, 2016 , ... As a former ... schedule, a demanding job, and no time to decompress, Rabinowitz found herself drawn to ... to meditation for its impact on her life, implementing a 20-minute-per-day meditation practice with ...
Breaking Medicine News(10 mins):
(Date:2/11/2016)... has committed to provide drug disposal kiosks in ... as part of a program to combat drug ... organization As You Sow. Conrad MacKerron , Senior ... to unneeded drugs because they lack easily accessible collection and ... Conrad MacKerron , Senior Vice President at As You ...
(Date:2/11/2016)... , Feb. 11, 2016   Health 2.0 ... of new health technologies, announced today " 10 Year ... in health tech over the past ten years.   ... nearly a decade, Health 2.0 has served as the ... and connected with thousands of technologies, companies, innovators, and ...
(Date:2/11/2016)... Calif. , Feb. 11, 2016  NOIT™ Research ... a special "Gift of Change" campaign to assist needy ... For every such unit sold between February 10, 2016 ... unit to a needy family. The NOIT is an ... non/limited-verbal autistic individuals develop language skills. ...
Breaking Medicine Technology:
Cached News: