Botox injections in forehead alter brain activity linked to emotions

After having Botox injections in the forehead, people’s brains respond in a different way when they see images of faces showing emotion. This may mean they find it harder to interpret other people’s emotions because of disrupted signalling between their facial muscles and their brains.

Mitchell Brin – who works at AbbVie, which makes Botox, and at the University of California, Irvine – and his colleagues scanned the brains of 10 women aged between 33 and …