Navigation Links
Signals from stroking have direct route to brain

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
University of Gothenburg

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:
(Date:11/17/2015)... 2015 Paris from 17 ... Paris from 17 th until 19 ... innovation leader, has invented the first combined scanner in the ... same scanning surface. Until now two different scanners were required: one ... capture both on the same surface. This innovation is ...
(Date:11/16/2015)... , Nov 16, 2015  Synaptics Inc. (NASDAQ: ... interface solutions, today announced expansion of its TDDI ... touch controller and display driver integration (TDDI) ... smartphones. These new TDDI products add to the ... resolution), TD4302 (WQHD resolution), and TD4322 (FHD resolution) ...
(Date:11/11/2015)... , Nov. 11, 2015   MedNet Solutions , an ... of clinical research, is pleased to announce that it will ... Trials (PCT) event, to be held November 17-19 in ... to view live demonstrations of iMedNet , ... how iMedNet has been able to deliver time ...
Breaking Biology News(10 mins):
(Date:12/1/2015)... Dec. 01, 2015 ... of the "2016 Europe Cell Surface ... Technologies, Competitive Strategies, Opportunities for Suppliers--France, Germany, ... offering. --> ) has ... Europe Cell Surface Markers: Country Volume and ...
(Date:12/1/2015)... -- Symic, a clinical-stage biotherapeutics company developing multiple compounds that ... that it has secured $25 million in a Series ... lead candidates SB-030 and SB-061. The financing was led ... existing major investors, as well as several new investors. ... Symic to over $43 million since being founded in ...
(Date:12/1/2015)... 1, 2015 ... "2016 U.K. Virology and Bacteriology Testing Market: ... Tests, Supplier Shares by Test, Innovative Technologies, ... offering.  --> ) has ... Virology and Bacteriology Testing Market: Sales and ...
(Date:11/30/2015)... radiology technique shows promise for helping morbidly obese patients lose ... presented today at the annual meeting of the Radiological Society ... --> --> Gastric artery embolization ... way to stop bleeding in emergency situations, but the idea ... is new. Mubin Syed , M.D., interventional radiologist ...
Breaking Biology Technology: