I wanted to alert you to a very interesting finding published in a recent issue of Science, one of the world’s leading scientific journals.

The study was led by Dr. Torkel Klingberg and his colleagues from the Karolinska Institute in Sweden. The goal was to learn whether Working Memory Training is associated with changes in brain biochemistry, thus suggesting a mechanism by which training may lead to enhanced working memory capacity and a reduction in attention problems. Thus, although Working Memory Training has previously shown promising results as a treatment for working memory and attention difficulties, this was a basic science study rather than a treatment study.

The major finding was that increased working memory capacity following training was associated with changes in brain biochemistry. Specifically, the researchers found changes in the density and binding potential of cortical D1 dopamine receptors in brain regions that are activated during working memory tasks.

Results from this study suggest a biological basis for the improvement in working memory capacity and reductions i Read the rest of this entry »

Cognitive Training Can Alter Biochemistry Of The Brain (Science Daily)

- “Researchers at the Swedish medical university Karolinska Institutet have shown for the first time that the active training of the working memory brings about visible changes in the number of dopamine receptors in the human brain.”

- “”Brain biochemistry doesn’t just underpin our mental activity; our mental activity and thinking process can also affect the biochemistry,” says Professor Torkel Klingberg, who led the study.”

- “Changes in the number of dopamine receptors in a person doesn’t give us the key to poor memory,” says Professor Lars Farde, one of the researchers who took part in the study. “We also have to ask if the differences could have been caused by a lack of memory training or other environmental factors. Maybe we’ll be able to find new, more effective treatments that combine medication and cognitive training, in which case we’re in extremely interesting territory.”

Comment:  couldn’t agree more with “Maybe we’ll be able to find new, more effective treatments that combine medication and cognitive training, in which case we’re in extremely interesting territory.” This study adds a very important angle to the growing literature on working memory training, showing a more fundamental, structural impact, that once thought (such as the well-known effect that “cells that fire together wire together”). The computerized cognitive program used in the study was Cogmed working memory training.

More on Torkel Klingberg’s research:

- Article written by Torkel Klingberg on The Overflowing Brain & Information Overload

- His recent book, which was The SharpBrains Most Important Book of 2008: The Overflowing Brain: Information Overload and the Limits of Working Memory

- 2006 Interview with Dr. Klingberg: Working Memory Training and RoboMemo: Interview with Dr. Torkel Klingberg