Navigation Links
Acupuncture changes brain's perception and processing of pain
Date:11/30/2010

CHICAGO Using functional magnetic resonance imaging (fMRI), researchers have captured pictures of the brain while patients experienced a pain stimulus with and without acupuncture to determine acupuncture's effect on how the brain processes pain. Results of the study, which the researchers say suggest the effectiveness of acupuncture, were presented today at the annual meeting of the Radiological Society of North America (RSNA).

"Until now, the role of acupuncture in the perception and processing of pain has been controversial," said lead researcher Nina Theysohn, M.D., from the Department of Diagnostic and Interventional Radiology and Neuroradiology at University Hospital in Essen, Germany. "Functional MRI gives us the opportunity to directly observe areas of the brain that are activated during pain perception and see the variances that occur with acupuncture."

fMRI measures the tiny metabolic changes that take place in an active part of the brain, while a patient performs a task or is exposed to a specific external stimulus.

In the study, conducted in close collaboration with the Department of Complementary and Integrative Medicine at University of Duisburg-Essen, 18 healthy volunteers underwent fMRI while an electrical pain stimulus was attached to the left ankle. Acupuncture needles were then placed at three places on the right side, including between the toes, below the knee, and near the thumb. With the needles in place, fMRI was repeated while electrical currents were again directed at the left ankle. The researchers then compared the images and data obtained from the fMRI sessions with no acupuncture to those of the fMRI sessions with acupuncture.

"Activation of brain areas involved in pain perception was significantly reduced or modulated under acupuncture," Dr. Theysohn said.

Specifically, fMRI revealed significant activation in the contralateral supplementary motor area, somatosensory cortex, precuneus bilateral insula and ipsilateral somatomotor cortex during electrical pain stimulation without acupuncture. During acupuncture, activation in most of these pain-processing areas of the brain was significantly reduced.

According to Dr. Theysohn, in addition to the assumed specific effects on the pain signal, acupuncture also affected brain activation in areas governing the patients' expectations of pain, similar to a placebo analgesic response.

The anterior insula, for example, plays a role in transforming pain sensation to cognition and represents a subjective component of pain sensation. The reduction in activation of the primary somatosensory cortex and the insula during acupuncture indicates an acupuncture-induced modulation of the sensory encoding of the painful stimulus.

"Acupuncture is supposed to act through at least two mechanismsnonspecific expectancy-based effects and specific modulation of the incoming pain signal," Dr. Theysohn said. "Our findings support that both these nonspecific and specific mechanisms exist, suggesting that acupuncture can help relieve pain."


'/>"/>

Contact: Linda Brooks
lbrooks@rsna.org
630-590-7762
Radiological Society of North America
Source:Eurekalert

Related medicine news :

1. Young patients with chronic illnesses find relief in acupuncture
2. Acupuncture May Ease Depression During Pregnancy
3. Acupuncture may relieve joint pain caused by some breast cancer treatments
4. AcuAids Announces Acupuncture at Home to Stop Smoking, Lose Weight and More
5. Acupuncture May Ease Anxiety Over Dental Work
6. Acupuncture may be an effective treatment for post-viral infection loss of smell
7. Acupuncture May Help Restore Lost Sense of Smell
8. Quit Smoking with Acupuncture and Hypnosis and it is Free
9. Acupuncture Delivers Some Pain Relief
10. Acupunctures molecular effects pinned down
11. Acupuncture May Trigger Natural Painkiller
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... ... , ... Conventional wisdom preaches the benefits of moderation, whether it’s a matter ... bar too high can result in disappointment, perhaps even self-loathing. However, those who set ... , Research from PsychTests.com reveals that behind the tendency to set low ...
(Date:6/24/2016)... ... June 24, 2016 , ... Marcy was in a crisis. Her son James, eight, was ... his family verbally and physically. , “When something upset him, he couldn’t control his emotions,” ... He would throw rocks at my other children and say he was going to kill ...
(Date:6/24/2016)... ... June 24, 2016 , ... Comfort Keepers® of San Diego, ... and the Road To Recovery® program to drive cancer patients to and from their ... to ensure the highest quality of life and ongoing independence. Getting to and ...
(Date:6/24/2016)... ... June 24, 2016 , ... ... proud to recognize Dr. Barry M. Weintraub as a prominent plastic surgeon and ... women in the world, and the most handsome men, look naturally attractive. Plastic ...
(Date:6/24/2016)... ... , ... Venture Construction Group (VCG) sponsors Luke’s Wings ... the Woodmont Country Club at 1201 Rockville Pike, Rockville, Maryland, 20852. The event ... that have been wounded in battle and their families. Venture Construction Group is a ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... 24, 2016  Collagen Matrix, Inc., ("Collagen Matrix") ... manufacturing of collagen and mineral based medical devices ... Bill Messer has joined the company ... leverage the growing portfolio of oral surgery, neurosurgery, ... Bill joins the Collagen Matrix executive team as ...
(Date:6/24/2016)... ALEXANDRIA, Va. , June 24, 2016 ... a set of recommendations that would allow ... information (HCEI) with entities that make formulary and coverage ... determine the "value" of new medicines. The ... that does not appear on the drug label, a ...
(Date:6/24/2016)... June 24, 2016   Pulmatrix, Inc ., (NASDAQ: ... innovative inhaled drugs, announced today that it was added ... reconstituted its comprehensive set of U.S. and global ... is an important milestone for Pulmatrix," said Chief Executive ... awareness of our progress in developing drugs for crucial ...
Breaking Medicine Technology: