Pearce found that Neanderthals had significantly larger eye sockets – by an average of 6mm from top to bottom.
Although this seems like a small amount, she said that it was enough for Neanderthals to use significantly more of their brains to process visual information.
“Since Neanderthals evolved at higher latitudes, more of the Neanderthal brain would have been dedicated to vision and body control, leaving less brain to deal with other functions like social networking,” she told BBC News.
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