Medindia LOGIN REGISTER
Medindia
Advertisement

Study Finds Ability to Identify the Source of Pain Varies Across the Body

by Dr. Enozia Vakil on June 7, 2014 at 10:37 PM
 Study Finds Ability to Identify the Source of Pain Varies Across the Body

"Where does it hurt?" is probably the first question asked to anyone affected by pain.

A new UCL study defines for the first time how our ability to identify where it hurts, called "spatial acuity", varies across the body, being most sensitive at the forehead and fingertips.

Advertisement

Using lasers to cause pain to 26 healthy volunteers without any touch, the researchers produced the first systematic map of how acuity for pain is distributed across the body. The work is published in the journal Annals of Neurology and was funded by the Wellcome Trust.

With the exception of the hairless skin on the hands, spatial acuity improves towards the centre of the body whereas the acuity for touch is best at the extremities. This spatial pattern was highly consistent across all participants.
Advertisement

The experiment was also conducted on a rare patient lacking a sense of touch, but who normally feels pain. The results for this patient were consistent with those for healthy volunteers, proving that acuity for pain does not require a functioning sense of touch.

"Acuity for touch has been known for more than a century, and tested daily in neurology to assess the state of sensory nerves on the body. It is striking that until now nobody had done the same for pain," says lead author Dr Flavia Mancini of the UCL Institute of Cognitive Neuroscience. "If you try to test pain with a physical object like a needle, you are also stimulating touch. This clouds the results, like taking an eye test wearing sunglasses. Using a specially-calibrated laser, we stimulate only the pain nerves in the upper layer of skin and not the deeper cells that sense touch."



Source: Eurekalert
Font : A-A+

Advertisement

Advertisement
Advertisement

Recommended Readings

Latest Research News

Life Expectancy Gap for Autistic Individuals Revealed
Diagnosed autistic individuals showed increased premature mortality in the UK, highlighting urgent needs to address associated inequalities.
Exploring How Hearing Impairment Shapes Dementia Risk
Study reveals a correlation between hearing impairment and distinct brain region variances, contributing to dementia.
Coffee and its Role in Neurodegenerative Disorders
Financial impact of caring for individuals with neurodegenerative disorders reaches hundreds of billions annually in the United States.
Healthcare Industry Struggles With Tech Skills Shortage
Experts emphasize that addressing the skills gap demands immediate attention and innovative solutions, including education, re-training, and significant time investment.
Nano-Probes Uncover Cellular Reactions to Pressure
New study unveiled the cells' ability to adapt in responses and potential implications for conditions such as diabetes and cancer.
View All
This site uses cookies to deliver our services.By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use  Ok, Got it. Close
×

Study Finds Ability to Identify the Source of Pain Varies Across the Body Personalised Printable Document (PDF)

Please complete this form and we'll send you a personalised information that is requested

You may use this for your own reference or forward it to your friends.

Please use the information prudently. If you are not a medical doctor please remember to consult your healthcare provider as this information is not a substitute for professional advice.

Name *

Email Address *

Country *

Areas of Interests