
Not good at math? You might need a slight jolt to the brain.
A recent study published in PLOS Biology suggests that a faint electrical shock to the brain can improve college students’ math abilities.
The research featured 72 volunteer students from the University of Oxford, with varying math skills. They were scanned and assessed before being divided into three smaller groups.
Each group would have students with varying math skills; some are stronger, while others are weaker.
As part of the experiment, each student would have electrodes placed on their scalps. This cap can deliver mild electrical signals to the brain using a technique called transcranial random noise stimulation (tRNS). (Don’t worry, this stimulation is non-invasive and rarely feels anything, according to previous subjects.)
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Two groups would receive stimulation to their dorsolateral prefrontal cortex (dlPFC) or the posterior parietal cortex (PPC), which have been previously identified as parts of the brain linked to mathematical ability. The third group received a sham stimulation.
Each participant then completed 150 minutes of stimulation, paired with math tests, over a period of five days — the math problems involved either calculations or recalling memorized equations.
The researchers hypothesized that stronger connections between the dlPFC and the PPC, which are responsible for executive function and memory, respectively, predicted better calculation performance.
When the researchers applied the painless brain stimulation through the electrodes, the low performers saw their test scores improve by 25 to 29 percent.
The researchers believe that by enhancing the excitability of neurons and interacting with the brain chemical GABA, the stimulation worked.
The stimulation also showed that, while it helped the natural underperformers reach or even surpass the scores of their peers with inherently stronger brain wiring, those who were already proficient did not see any additional benefits.
This article, Mild electric stimulation of the brain may improve math skills — study, was originally published at NoypiGeeks | Philippines Technology News, Reviews and How to's.
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