Movie clip reconstructed by an AI reading mice's brains as they watch

A mouse's brain activity may give some indication into what it is seeing A black-and-white movie has been extracted almost perfectly from the brain signals of mice using an artificial intelligence tool. Mackenzie Mathis at the Swiss Federal Institute of Technology Lausanne and her colleagues collected brain activity data from around 50 mice while they watched a 30-second movie clip nine times. The researchers then trained an AI to link this data to 600 frames of the clip, in which a man runs to a car and opens its boot. The data was previously collected by other researchers who inserted metal probes, which record electrical pulses from neurons, into the mice's primary visual cortexes, the area of the brain involved in processing visual information. Some brain activity data was also collected by imaging the mice's brains using a microscope. Next, Mathis and her team tested the ability of their trained AI to predict the order of frames within the clip using brain activity data that was collected from the mice as they watched the movie for the tenth time.