Activate Now
ProHealth fibromyalgia Vitamin and Natural Supplement Store and Health
Home  |  Log In  |  My Account  |  View Cart  View Your ProHealth Vitamin and Supplement Shopping Cart
800-366-6056  |  Contact Us  |  Help
Facebook Google Plus
Fibromyalgia  Chronic Fatigue Syndrome & M.E.  Lyme Disease  Natural Wellness  Supplement News  Forums  Our Story
Store     Brands   |   A-Z Index   |   Best Sellers   |   New Products   |   Deals & Specials   |   Under $10   |   SmartSavings Club

Trending News

Do You Have These Fibromyalgia Symptoms of Systemic Dysfunction?

Fibromyalgia Is Finally Recognized as an Official Diagnosis!

Meet Devin Starlanyl: Fibromyalgia and Chronic Myofascial Pain Expert

The Fibromyalgia – Negativity Connection

Which Infection Causes CFS & Fibromyalgia?

Simplifying Nutritional Support in CFS & Fibromyalgia

Need Help with Pain Management? There's an App for That

6 Reasons Why Trigger Point Injections Aren't Helping Your Fibromyalgia

Exercise: Friend or Foe in Fibromyalgia?

How Multiple Chronic Illnesses Shaped One Woman Into a Patient Advocate

Print Page
Email Article

An fMRI-Based Neurologic Signature of Physical Pain

  [ 1 vote ]   [ Discuss This Article ]
By Tor D. Wager et al. • • April 15, 2013

~Source: N Engl J Med, April 11, 2013.

By Tor D. Wager et al.

Background: Persistent pain is measured by means of self-report, the sole reliance on which hampers diagnosis and treatment. Functional magnetic resonance imaging (fMRI) holds promise for identifying objective measures of pain, but brain measures that are sensitive and specific to physical pain have not yet been identified.

Methods: In four studies involving a total of 114 participants, we developed an fMRI-based measure that predicts pain intensity at the level of the individual person. In study 1, we used machine-learning analyses to identify a pattern of fMRI activity across brain regions — a neurologic signature — that was associated with heat-induced pain. The pattern included the thalamus, the posterior and anterior insulae, the secondary somatosensory cortex, the anterior cingulate cortex, the periaqueductal gray matter, and other regions. In study 2, we tested the sensitivity and specificity of the signature to pain versus warmth in a new sample. In study 3, we assessed specificity relative to social pain, which activates many of the same brain regions as physical pain. In study 4, we assessed the responsiveness of the measure to the analgesic agent remifentanil.

Results: In study 1, the neurologic signature showed sensitivity and specificity of 94% or more (95% confidence interval [CI], 89 to 98) in discriminating painful heat from nonpainful warmth, pain anticipation, and pain recall. In study 2, the signature discriminated between painful heat and nonpainful warmth with 93% sensitivity and specificity (95% CI, 84 to 100). In study 3, it discriminated between physical pain and social pain with 85% sensitivity (95% CI, 76 to 94) and 73% specificity (95% CI, 61 to 84) and with 95% sensitivity and specificity in a forced-choice test of which of two conditions was more painful. In study 4, the strength of the signature response was substantially reduced when remifentanil was administered.

Conclusions: It is possible to use fMRI to assess pain elicited by noxious heat in healthy persons. Future studies are needed to assess whether the signature predicts clinical pain.

Source: N Engl J Med 2013; 368:1388-1397April 11, 2013DOI: 10.1056/NEJMoa1204471. Tor D. Wager, Ph.D., Lauren Y. Atlas, Ph.D., Martin A. Lindquist, Ph.D., Mathieu Roy, Ph.D., Choong-Wan Woo, M.A., and Ethan Kross, Ph.D.

Please Discuss This Article:   Post a Comment 

[ Be the first to comment on this article ]

Free Chronic Fatigue Syndrome and Fibromyalgia Newsletters
Subscribe to
Subscribe Now!
Receive up-to-date ME/CFS, Fibromyalgia & Lyme Disease treatment and research news
 Privacy Guaranteed  |  View Archives

Vitamins and Supplements for Fibromyalgia Support

Featured Products

Fibro Freedom™ Fibro Freedom™
Soothes, strengthens & revitalizes
Energy NADH™ 12.5mg Energy NADH™ 12.5mg
Improve Energy & Cognitive Function
Optimized Curcumin Longvida® Optimized Curcumin Longvida®
Supports Cognition, Memory & Overall Health
Hydroxocobalamin Extreme™ Hydroxocobalamin Extreme™
The B-12 your brain needs for detox & sharpness
Guaifenesin FA™ Guaifenesin FA™
Natural Expectorant Relieves Chest Congestion

Natural Remedies

"It's Not Easy Being Green" - But It Is Healthy
Clinically Studied Joint Relief Product for FM & ME/CFS Clinically Studied Joint Relief Product for FM & ME/CFS
Carry a Massage Therapist in Your Pocket Carry a Massage Therapist in Your Pocket
Red Yeast Rice - Natural Option for Supporting Healthy Cholesterol Red Yeast Rice - Natural Option for Supporting Healthy Cholesterol
Running on Empty? Fuel Up with NADH Running on Empty? Fuel Up with NADH

What is Fibromyalgia?
Fibromyalgia Diagnosis
Fibromyalgia Symptoms
Fibromyalgia Causes
Fibromyalgia Treatments
Fibromyalgia Diet
Fibromyalgia Medications
M.E. & CFS
What is M.E./CFS?
M.E./CFS Diagnosis
M.E./CFS Symptoms
M.E./CFS Causes
M.E./CFS Treatments
M.E./CFS Diet
M.E./CFS Medications
What is Lyme Disease?
Lyme Disease Diagnosis
Lyme Disease Symptoms
Lyme Disease Causes
Lyme Disease Treatments
Lyme Disease Diet
Lyme Disease Medications
M.E. & CFS
Lyme Disease
General Health
ProHealth on Facebook  ProHealth on Twitter  ProHealth on Pinterest  ProHealth on Google Plus
Credit Card Processing