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:12/9/2016)... (PRWEB) , ... December 09, 2016 , ... The ... Drug Dependence, Inc. (NCADD) is recommending the film Whispering Spirits and ... the District of Columbia as an education tool in the war against teen drug ...
(Date:12/9/2016)... ... December 09, 2016 , ... Mediaplanet today announces distribution of the latest ... readers to sign up as an organ donor for the 123,000 people in the ... organ donor can save up to 8 saves through organ donation and enhance many ...
(Date:12/9/2016)... (PRWEB) , ... December 09, 2016 , ... "I had ... an inventor from Winchester, Va. "I thought that if the nebulizer had a more ... rather than fearing them." , He developed the patent-pending NEBY to avoid the need ...
(Date:12/8/2016)... ... 08, 2016 , ... The Florida Hospital Tampa Wound Healing ... Society (UHMS), the leading authority in hyperbaric medicine. This accreditation identifies the Institute ... and facilities have earned this distinction. This is the second time the Florida ...
(Date:12/8/2016)... ... 2016 , ... ZyDoc , a New York-based medical ... Capture Methods for Input to Electronic Health Records: A Comparative Usability Study” has ... usability study demonstrate that a dictation-based method (“NLP Entry”) using ZyDoc’s MediSapien™ natural ...
Breaking Medicine News(10 mins):
(Date:12/9/2016)... Research and Markets has announced the addition of ... offering. ... report forecasts the global optical transceiver market to grow at a ... report covers the present scenario and the growth prospects of the ... the report considers the revenue generated from the shipment of optical ...
(Date:12/9/2016)...  Harmar Mobility, LLC announced today that Steven E. Dawson has been ... of Directors. Photo - http://photos.prnewswire.com/prnh/20161209/447552 ... Harmar ... Mr. Dawson,s executive career includes leadership roles managing ... of industries. He brings to the company deep operational and leadership expertise, ...
(Date:12/9/2016)... aTyr Pharma, Inc. (Nasdaq: LIFE ), a ... to address severe, rare diseases, today announced that senior management will ... Success Healthcare Conference at the InterContinental Barclay Hotel in ... 4:20 p.m. ET. About aTyr Pharma ... aTyr Pharma is engaged ...
Breaking Medicine Technology: