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BrainPort

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A sensory substitution device that allows blind people to 'see' through electrical stimulation on the tongue.

accessibility sensory substitution medical device
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David Eagleman

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David Eagleman mentioned ✓ High confidence
"Paul Bach-y-Rita's research has continued with something called the BrainPort, which is again for blind people. You've got this little electrical grid on your tongue. And so whatever the camera is seeing, you feel that on your tongue."
From: Science & Tools of Learning & Memory | Dr. David Eagleman • ▶ 1:33:35 • Jan 2026

Attribution: Eagleman describes BrainPort as continuation of research in sensory substitution