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6 March 2014 1:04 pm ,
Vol. 343 ,
Magdalena Koziol, a former postdoc at Yale University, was the victim of scientific sabotage. Now, she is suing the...
Antiretroviral drugs can protect people from becoming infected by HIV. But so-called pre-exposure prophylaxis, or PrEP...
Two studies show that eating a diet low in protein and high in carbohydrates is linked to a longer, healthier life, and...
Considered an icon of conservation science, researchers at World Wildlife Fund (WWF) headquarters in Washington, D.C.,...
The new atlas, which shows the distribution of important trace metals and other substances, is the first product of...
Early in April, the first of a fleet of environmental monitoring satellites will lift off from Europe's spaceport in...
Since 2000, U.S. government health research agencies have spent almost $1 billion on an effort to churn out thousands...
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ScienceShot: Bird Brains Show Their Fear of Faces
10 September 2012 3:10 pm
Crows don't forget a face—especially one they're afraid of. Now, images of the birds' brain activity reveal what happens neurologically when they see a familiar face. Researchers from the University of Washington donned identical masks and captured 12 wild American crows. The scientists kept the birds in captivity for a month and fed them while wearing a different, "caretaker" mask. Afterward, the team showed the birds humans wearing the two different masks and monitored the crows' brain activity using positron emission tomography. The "threatening" mask the researchers wore to capture the birds activated brain regions associated with fear, the team reports today in the Proceedings of the National Academy of Sciences. The caretaker mask worn to feed the birds, on the other hand, activated another set of regions associated with reward and motivation. These results suggest that American crows, like humans, distinguish faces by combining visual information with preexisting memories.
See more ScienceShots.