A clenched fist helps the brain



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Retrieving memories is easier with a clenched fist

Those who clench their fists can recall memories more easily. That's what American psychologists found out. It depends on which hand uses the fist trick. The experiment was carried out with 51 right-handed people. Many were able to improve their small memory deficits.

Right hand clenched into a fist helped right-handed people to learn A clenched fist does not always mean trouble. This was demonstrated by Ruth Propper from Montclair State University and her team. Clenching a fist can help you recall memories and what you've learned. The researchers took advantage of the long-recognized thesis that movements of the left half of the body are connected to the right brain region and activities of the right half of the body are connected to the left brain region.

In the study, right-handers should either not squeeze a rubber ball for 45 seconds or do it twice in quick succession with the same hand. At the same time, the test subjects concentrated on an "X" on a screen. Then you should remember 36 words that were displayed. Before the noted words were queried, some of the test subjects should press the rubber ball again while the other part did nothing. As the researchers wrote in the online journal "PLoS ONE", the study participants did best who pressed the rubber ball with their right hand while memorizing and with their left hand when retrieving the information. The test subjects remembered an average of 11 words where nine answers were correct, compared to the group of study participants who had pressed a rubber ball with their left hand in both experiments, they performed almost twice as well, but the test participants who had not pressed a rubber ball performed almost as well as the first group.

A clenched fist could also help with other memory functions As Propper explained, the results concluded that "simple movements can improve memory, for example by temporarily changing brain activity". However, "this activity was not measured during the tests". Nevertheless, it is possible to use these experiments to investigate the responsibility of the brain hemispheres for certain tasks. "The thesis was supported that the simple one-sided clenching of the hand can be used as an aid with which the functional specialization of the brain hemispheres can be examined by healthy people can, "the researchers write. The study also supports the well-known thesis that words are remembered in the left front of the brain and retrieved in the right half of the brain. Further studies are now to test" whether the fist -Trick not only when learning words but also with others Memory skills such as spatial imagination or face recognition is helpful ".

The study results from Propper and her team only refer to right-handed people. The researchers have not yet explained to what extent the results also apply to left-handed and ambidextrous people. Corresponding results were available in part, but would only be presented later, according to the scientists. (ag)

Image: Gerd Altmann / pixelio.de

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