According to the research by Goldsmiths University neuroscientist Patrick Fagan and Professor Brendan Walker of Thrill Laboratory, participating filmgoers showed a 23% increase in cognitive processing ability after watching a movie in stereoscope. Their reaction times improved by 11%, and they experienced a “brain boost” for up to 20 minutes after viewing. The improvement in reaction time was five times that experienced by participants who had been watching a 2D movie.“These findings are more significant than you might think,” said Fagan. “It is a fact that people are living longer and there is a noticeable decline in cognitive brain function in old age, which can impair future quality of life. There has never been a better time to look at ways to improve brain function. The initial results of this study indicate that 3D films may potentially play a role in slowing this decline.”

Source: Watching 3D movies ‘helps improve brain power’ | Film | The Guardian