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publicado em 06/02/2013 às 17h30:00
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Research from Japan shows that up to eight brain areas are directly affected by the simple act of chewing gum

 
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Pesquisa sugere que chiclete pode melhorar o tempo de reação em adultos
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Pesquisa sugere que chiclete pode melhorar o tempo de reação em adultos

In recent years, chewing has been discussed as producing effects of maintaining and sustaining cognitive performance. We have reported that chewing may improve or recover the process of working memory; however, the mechanisms underlying these phenomena are still to be elucidated. We investigated the effect of chewing on aspects of attention and cognitive processing speed, testing the hypothesis that this effect induces higher cognitive performance. Seventeen healthy adults (20 34 years old) were studied during attention task with blood oxygenation level-dependent functional (fMRI) at 3.0 T MRI. The attentional network test (ANT) within a single task fMRI containing two cue conditions (no cue and center cue) and two target conditions (congruent and incongruent) was conducted to examine the efficiency of alerting and executive control. Participants were instructed to press a button with the right or left thumb according to the direction of a centrally presented arrow. Each participant underwent two back-to-back ANT sessions with or without chewing gum, odorless and tasteless to remove any effect other than chewing. Behavioral results showed that mean reaction time was significantly decreased during chewing condition, regardless of speed-accuracy trade-off, although there were no significant changes in behavioral effects (both alerting and conflict effects). On the other hand, fMRI analysis revealed higher activations in the anterior cingulate cortex and left frontal gyrus for the executive network and motor-related regions for both attentional networks during chewing condition. These results suggested that chewing induced an increase in the arousal level and alertness in addition to an effect on motor control and, as a consequence, these effects could lead to improvements in cognitive performance.

Source: Isaude.net
   Palavras-chave:   Gum    Chewing gum    Reaction time    Alertness    National Institute of Radiological Sciences   
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Gum    chewing gum    reaction time    alertness    National Institute of Radiological Sciences   
Comments:
Comment
Fernanda P.M.Minoda
posted on:
08/02/2013 18:04:43
Para quem gosta de mascar chiclete......
Edudo
posted on:
06/02/2013 18:09:58
genti adorrei pur iso çou ixperto mazco ciclete sempri adorrei a materria
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