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:1/28/2020)... ... January 28, 2020 , ... ... companies and government agencies, announced that the firm has established a presence in ... Cambridge office will be in the Cambridge Innovation Center (CIC), at One Broadway ...
(Date:1/27/2020)... ... January 27, 2020 , ... Cytonus Therapeutics Inc. today ... tech entrepreneur, and former senior management consultant at McKinsey & Company who holds ... alternative investment firm. , “Chris Thorne has exceptional business acumen with a ...
(Date:1/24/2020)... ... January 24, 2020 , ... Worldwide Business with kathy ireland® ... Stanbridge and Vice President of Sales and Marketing Jeff Maier to discuss their innovative ... content on Sunday, Jan. 26, 2020 at 5:30 p.m. EST and internationally on Bloomberg ...
Breaking Biology News(10 mins):
(Date:1/24/2020)... , ... January 24, 2020 , ... The plastic and ... Surgery Center in New Jersey epitomize the notion that plastic surgery is much more ... characterized in popular media. , Over the last 20 years NJ Top Docs, Dr. ...
(Date:1/24/2020)... ... January 24, 2020 , ... Sierra ... mass flow meters and controllers ideal for BioPharm OEMS. Sierra also ... antiquated rotameters. These thermal instruments employ high-precision MEMS (Micro-Electro Mechanical Systems) technology utilizing ...
(Date:1/22/2020)... ... January 20, 2020 , ... Brilliant, maker of the award-winning ... independent electronics distributor in the US, to make it easy for homebuilders, multifamily ... smart home products from a single fulfillment partner. Ranging from entry-level systems for ...
(Date:1/22/2020)... ... January 21, 2020 , ... ... the precision of Genome editing. The partners have agreed to co-develop and market ... CRISPR research, agricultural, and pre-clinical programs. Over the longer-term, the parties aim to ...
Breaking Biology Technology: