Navigation Links
Signals from stroking have direct route to brain
Date:4/14/2009

Nerve signals that tell the brain that we are being slowly stroked on the skin have their own specialised nerve fibres in the skin. This is shown by a new study from the Sahlgrenska Academy, University of Gothenburg, Sweden. The discovery may explain why touching the skin can relieve pain.

The specialised nerve fibres in the skin are called CT nerves (C-tactile) and they travel directly to the areas in the brain that are important in the emergence of feelings.

"Basically the signals that tell the brain that we are being stroked on the skin have their own direct route to the brain, and are not blocked even if the brain is receiving pain impulses from the same area. In fact it's more the opposite, that the stroking impulses are able to deaden the pain impulses," says Line Lken, postgraduate student in neurophysiology at the Sahlgrenska Academy.

The results are being published in the distinguished scientific journal, Nature Neuroscience. The research group examined a group of healthy subjects using a technique called microneurography.

"By inserting a thin electrode into a nerve in the forearm we can listen in on the nerve and pick up signals from one of the thousands of nerve fibres that make up a nerve," explains Associate Professor Hkan Olausson, who is leading the research group behind the discovery, together with Johan Wessberg.

Each individual nerve fibre is responsible for touch signals from roughly a square centimetre of skin. The research team used a specially-designed robot, which brushed over the exact area of skin for which a particular nerve fibre is responsible. The subjects were also asked to rate how pleasant or unpleasant they found the brushing.

"As the nerve signals that were sent in the CT nerves became more frequent, the subjects reported the experience as being increasingly pleasant. Of the skin nerves that we studied, it was only the CT nerves that had this strong link between the frequency of the signals and how pleasant it felt," says researcher Johan Wessberg.


'/>"/>

Contact: Line Lken
line.loken@neuro.gu.se
46-070-565-8861
University of Gothenburg
Source:Eurekalert

Related biology news :

1. Cell response to stress signals predicts tumors in women with common pre-breast cancer
2. Presence of certain antibodies signals healthier teeth and gums
3. Its a unisex brain with specific signals that trigger male behavior
4. Crossed (evolutionary) signals?
5. Signals from the Atlantic salmon highway
6. Millisecond brain signals predict response to fast-acting antidepressant
7. Atomic-resolution views suggest function of enzyme that regulates light-detecting signals in eye
8. Streamlining brain signals for speed and efficacy
9. Novel electric signals in plants
10. New, more direct pathways from outside the cell-to-cell nuclei discovered
11. 4,000 e-Books now available on ScienceDirect
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/18/2020)... ... July 16, 2020 , ... ... effectiveness of the Invictus Medical Neoasis™ active noise control device to attenuate typical ... that the Neoasis™ device attenuated the alarm sounds from patient monitors, ventilators and ...
(Date:7/2/2020)... ... July 01, 2020 , ... ... phase 1a findings of Neihulizumab, a biologic for the treatment of steroid-refractory acute ... Led by hemato-oncologist Dr. Paul J Martin of the Fred Hutchinson Cancer Research ...
(Date:6/28/2020)... JUPITER, Fla. (PRWEB) , ... June 25, 2020 , ... ... will focus on innovations in accelerated Point of Care Testing solutions (POCT). Check local ... labs. Samples are collected at medical offices and are shipped to labs throughout the ...
Breaking Biology News(10 mins):
(Date:7/31/2020)... (PRWEB) , ... July 29, 2020 , ... ... that can combine up to three different materials for use with CRM, neurostimulation, ... up to three materials to meet specific design requirements, performance, and cost criteria; ...
(Date:7/22/2020)... ... July 22, 2020 , ... Join experts from ... Sr. Manager Regulatory Solutions, in a one hour live webinar on Thursday, ... body in China for drugs and medical devices. Specifically, for medical devices, the NMPA ...
(Date:7/10/2020)... ... July 08, 2020 , ... ... a significant expansion of laboratory operations through its COVID-19 testing service, Bode-CARES ... programs. , Bode-CARES provides a turnkey solution that includes a ...
(Date:7/7/2020)... (PRWEB) , ... July 06, 2020 , ... ... Practices Awards. Entries from Roche, Eli Lilly, Bristol-Myers Squibb, the University of Chicago, ... 2003, Bio-IT World has hosted an elite awards program, highlighting outstanding examples of ...
Breaking Biology Technology: