Does our environment affect the genes in our brains?

Is there a link between differences in IQ test performance and the activity of certain genes? Researchers from Charité — Universitätsmedizin Berlin have shown that modifications in the structure of a specific gene have a negative impact on individual test performance. This suggests that environmentally-induced epigenetic changes to our genetic material have a greater impact on intelligence than previously thought. Results from this study have been published in Translational Psychiatry. Continue reading “Does our environment affect the genes in our brains?”

For the first time, a neural link between altruism and empathy toward strangers

Giving up a kidney to a stranger requires a certain sense of selflessness, what’s come to be known in social science as extraordinary altruism. University of Pennsylvania psychologist Kristin Brethel-Haurwitz wanted to understand the connection between this trait and empathy, specifically empathy for distress emotions. Continue reading “For the first time, a neural link between altruism and empathy toward strangers”

Mobile phone radiation may affect memory performance in adolescents, study finds

Radiofrequency electromagnetic fields may have adverse effects on the development of memory performance of specific brain regions exposed during mobile phone use. These are the findings of a study involving nearly 700 adolescents in Switzerland. The investigation, led by the Swiss Tropical and Public Health Institute (Swiss TPH), will be published on Monday, 23 July 2018 in the peer-reviewed journal Environmental Health Perspectives. Continue reading “Mobile phone radiation may affect memory performance in adolescents, study finds”

This is how the brain forgets on purpose

Researchers from Ruhr-Universität Bochum and the University Hospital of Gießen and Marburg, in collaboration with colleagues from Bonn, the Netherlands, and the UK, have analysed what happens in the brain when humans want to voluntarily forget something. They identified two areas of the brain — the prefrontal cortex and the hippocampus — whose activity patterns are characteristic for the process of forgetting. They measured the brain activity in epilepsy patients who had electrodes implanted in the brain for the purpose of surgical planning. The team headed by Carina Oehrn and Professor Nikolai Axmacher outlines the results in the journal Current Biology, published online on 6 September 2018. Continue reading “This is how the brain forgets on purpose”

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