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When Your Eyes Can’t See, but Your Brain Is Still Watching

It is estimated that sight accounts for 80–85% of learning, perception and cognition, however, people who don't have the sense of vision often have a more nuanced sense of hearing and can extract more information from sound than people with sight.

For some people without vision, this information extraction from sound reaches extraordinary levels, providing the brain with information in much the same way that light and vision do.