While cognitive effects were temporary, the lead researcher of the UBC and UVic study is concerned about possible long\u002Dterm effects.
While previous studies made a connection between air pollution and cognitive abilities, the UBC-UVic study is the first to confirm the connection in a controlled laboratory setting.Sign up to receive daily headline news from Ottawa Citizen, a division of Postmedia Network Inc.By clicking on the sign up button you consent to receive the above newsletter from Postmedia Network Inc. You may unsubscribe any time by clicking on the unsubscribe link at the bottom of our emails or any newsletter.
The scientists measured the brain’s default mode network, a set of interconnected regions of the brain that are important for memory and internal thought, using fMRI, or functional magnetic resonance imaging.Jodie Gawryluk “We know that altered functional connectivity in the default mode network has been associated with reduced cognitive performance and symptoms of depression, so it’s concerning to see traffic pollution interrupting these same networks,” Gawryluk said. “More research is needed to fully understand the functional impacts of these changes, but it’s possible that they may impair people’s thinking or ability to work.
The study looked only at the cognitive impacts of traffic-derived pollution, but Carlsten cautioned that other products of combustion are likely a concern, too.
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