Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Noise is not a nuisance: Noise helps memory performance in unruly children

20.09.2007
Noise as background sounds helps children with Attention Deficit and Hyeractivity Disorder (ADHD) to concentrate.

This is shown in new research at Stockholm University. A study soon to be published in the scientific journal Psychological Review, and serving as the basis of a new dissertation, shows that concentration and memory are improved for such children when they listen to auditory noise while learning.

“The discovery is surprising, since previous research has indicated that children with ADHD are easily disturbed in distracting environments,” says Göran Söderlund, a former teacher, today a doctoral student at the Department of Psychology, Stockholm University, who performed this research, together with Associate Professor Sverker Sikström of Lund University, also in Sweden.

A control group of children without ADHD nevertheless performed better in silence. The researchers explain the difference in how noise affects the memory by pointing to how the signal substance dopamine controls the brain’s activity. Children with ADHD have a low level of dopamine and therefore have low brain activity. Noise serves to stimulate the brain just enough for it to function better. Children without ADHD, on the other hand, have considerably more dopamine and higher brain activity. For these children, noise can even be damaging, since their brain is disturbed by too much irrelevant stimulation, which lowers their ability to concentrate and remember things.

A follow-up study shows that the positive effects of noise are not limited to children with ADHD but also help normal schoolchildren who are somewhat below average. At the same time, this study showed that high-achievement children performed less well in the presence of noise. This is also explained by the fact that below-average children normally have lower levels of dopamine than high-achievers.

“The conclusion is that noise is generally taken to raise low dopamine levels, thereby improving concentration and school achievement in children with ADHD but also for below-average achievers in general,” says Göran Söderlund.

“The conclusions we draw from our model are actually relatively easy to transfer to practical situations. The model helps us understand children with concentration problems and serves as a simple tool to adapt the school environment to children with ADHD.”

“It provides a scientific basis for treatment of a problem complex linked to concentration difficulties, as in ADHD, and can be a complement to pharmacological treatment,” says Göran Söderlund.

Low dopamine levels are one of several characteristics of ADHD, but they also occur in Parkinson’s disease and in normal aging. Other patient groups with memory problems may also benefit from these findings.

Göran Söderlund will also be submitting his thesis to the Department of Psychology, Stockholm University, based on the research behind the article. His doctoral dissertation. Noise Improves Cognitive Performance in Children with Dysfunctional Dopaminergic Neurotransmission, will be publicly defended at the Department of Psychology, Stockholm University, on September 21, 2007.

Maria Erlandsson | alfa
Further information:
http://www.diva-portal.org/su/abstract.xsql?dbid=7040

More articles from Studies and Analyses:

nachricht A sudden drop in outdoor temperature increases the risk of respiratory infections
11.01.2017 | University of Gothenburg

nachricht Urbanization to convert 300,000 km2 of prime croplands
27.12.2016 | Mercator Research Institute on Global Commons and Climate Change (MCC) gGmbH

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

Im Focus: Bacterial Pac Man molecule snaps at sugar

Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.

The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...

Im Focus: Newly proposed reference datasets improve weather satellite data quality

UMD, NOAA collaboration demonstrates suitability of in-orbit datasets for weather satellite calibration

"Traffic and weather, together on the hour!" blasts your local radio station, while your smartphone knows the weather halfway across the world. A network of...

Im Focus: Repairing defects in fiber-reinforced plastics more efficiently

Fiber-reinforced plastics (FRP) are frequently used in the aeronautic and automobile industry. However, the repair of workpieces made of these composite materials is often less profitable than exchanging the part. In order to increase the lifetime of FRP parts and to make them more eco-efficient, the Laser Zentrum Hannover e.V. (LZH) and the Apodius GmbH want to combine a new measuring device for fiber layer orientation with an innovative laser-based repair process.

Defects in FRP pieces may be production or operation-related. Whether or not repair is cost-effective depends on the geometry of the defective area, the tools...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

Multiregional brain on a chip

16.01.2017 | Power and Electrical Engineering

New technology enables 5-D imaging in live animals, humans

16.01.2017 | Information Technology

Researchers develop environmentally friendly soy air filter

16.01.2017 | Power and Electrical Engineering

VideoLinks
B2B-VideoLinks
More VideoLinks >>>