Brain regions ‘tune’ activity to enable attention

The brain appears to synchronize the activity of different brain regions to make it possible for a person to pay attention or concentrate on a task, scientists at the School of Medicine have learned. Pictured is the study’s first author, graduate student researcher Amy Daitch.

Unwanted side effect becomes advantage in photoacoustic imaging

Biomedical engineer Lihong Wang, PhD, and researchers in his lab work with lasers used in photoacoustic imaging for early-cancer detection and a close look at biological tissue. But sometimes there are limitations to what they can do, and as engineers, they work to find a way around those limitations. Wang and his team have discovered a unique and novel way to use an otherwise unwanted side effect of the lasers they use — the photo bleaching effect — to their advantage.

Microbes buy low and sell high

Microbes set up their own markets, comparing bids for commodities, hoarding to obtain a better price, and generally behaving in ways more commonly associated with Wall Street than the microscopic world. This has led an international team of scientists, including two from Washington University in St. Louis, to ask which, if any, market features are specific to cognitive agents.
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