Tasting the Light: Device Lets the Blind "See" with Their Tongues

A pair of sunglasses wired to an electric "lollipop" helps the visually impaired regain optical sensations via a different pathway















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The challenge of rechecking vision
Wicab is working with the University of Pittsburgh Medical Center's UPMC Eye Center for further testing on BrainPort. Optometrist Amy Nau will test it, along with other artificial devices such as retinal and cortical implant chips, in order to develop criteria for monitoring the progress of artificial sight.

"We can't just throw up an eye chart. We have to take a step back and describe the rudimentary precepts that these people are getting," Nau says. "The images are in black and white, pixilated. How do you recheck vision?"

Nau is particularly interested in the BrainPort because it is non-invasive, unlike implants.

The key to the device may be its utilization of the tongue, which seems to be an ideal organ for sensing electrical current. Saliva there functions as a good conductor, Seiple said. Also it might help that the tongue's nerve fibers are densely packaged and that these fibers are closer to the tongue's surface relative to other touch organs. (The surfaces of fingers, for example, are covered with a layer of dead cells called stratum corneum.)

"Many people who have acquired blindness are desperate to get their vision back," Nau says. Although sensory substitution techniques cannot fully restore sight, they do provide the information necessary for spatial orientation. Along with the blind, the BrainPort could help people with visual defects such as glaucoma, which leads to the loss of peripheral vision, and macular degeneration, which degrades sight at the center of the visual field.



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  1. 1. lyrogersle 12:08 PM 8/13/09

    I am blind. I am a member of the Blind community (uppercase intentional). I do not wish to ape the sighted by learning to ride a bicycle or seeing colors. I assume there must be other blind individuals (lowercase intentional) who do, and I hope they do not find this device awkward or demeaning. However, to those of us who are both Blind and sarcastic, this device is just another way to shut us up.

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  2. 2. Johnay 01:32 PM 8/13/09

    I wonder if this could be of use to firefighters.

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  3. 3. beep beep in reply to lyrogersle 04:27 PM 8/13/09

    Good one.

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  4. 4. rootsxrocks in reply to lyrogersle 11:23 PM 8/13/09

    LOL at the Sarcastic sight impared person, I dought seriously if this thing would shut my freind up. Besides it does not look demeaning at all maybe like she has her ear buds in her mouth and holding an Ipod using it like a flashlight. the glassess are not very obtrusive either.

    I think it would require a time to train

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  5. 5. Mr. Yojinbo 01:40 PM 8/14/09

    The plasticity and adaptability of the human mind beggars belief. Who needs miracles and messiahs to give sight to the blind when the Greatest Story Ever Told takes place everyday in our living brains!

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  6. 6. Mr. Yojinbo 01:41 PM 8/14/09

    The plasticity and adaptability of the human mind beggars belief. Who needs miracles and messiahs to give sight to the blind when the Greatest Story Ever Told takes place everyday in our living brains!

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  7. 7. iamarcin 02:15 PM 8/14/09

    So a person that can see should be able to use this method.
    I would very much like them to have and artist use this with eyes closed and then draw what he saw.

    Very very impressive i didn't even know anyone was doing something at this level.

    Not stupid looking at all.

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  8. 8. blechten in reply to lyrogersle 12:06 AM 8/15/09

    What a tremendous invention. I hope that people can make a free choice to use it without blowhard bigots giving them a hard time.

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  9. 9. quantum_flux 09:02 PM 8/16/09

    Yeah, this is really cool. I'm not blind and I can see myself using it for other applications. Wow, enter the matrix, the matrix of CPU pixels.

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  10. 10. paulbennett 04:43 PM 8/18/09

    Those who are intrigued by this should pick u a copy of Norman Doidge's "The Brain That Changes Itself." It has an account of Bach-y-Rita's early experiments and other therapies that use the brain's ability to reorganize itself. Great reading!

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  11. 11. Mary Cooper 03:48 PM 8/20/09

    My brother has been blind since birth and is an amazingly independent business person. His intelligence is astounding and my opinion is that he would be the perfect candidate to test the Brainport. His name is Jerry Berrier and he can be reached at 508-735-4420. He is 57 years old and in perfect health. Recently retired from Bell Telephone of Massachusetts but is still active as a consultant for visually impaired people.

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  12. 12. OckerBrown 10:48 PM 8/23/09

    My mum has been totally blind for almost a year. I would be keen on having a trial of this with her. Are there any machines in Australian yet?

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  13. 13. Synonymous 06:42 AM 8/25/09

    Whatever happened to teaching blind children echo location? I heard a while back that blind children all over the states were starting to pick it up after one blind kid taught himself how to do it. I remember thinking about the superhero Dare Devil at the time, and also wouldn't it be cool if I could do that!

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  14. 14. liberal scientist 02:34 PM 8/25/09

    Thanks for your reference paulbennett. I'm always looking for good additional reading.

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  15. 15. liberal scientist 02:37 PM 8/25/09

    By the way there was a great Nova presentation on this recently.

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  16. 16. mhenriday 04:46 PM 8/25/09

    Isn't it obvious that this is the type of research to which money should be devoted, rather than to ever more clever ways to kill and maim people around the world ?...

    Henri

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  17. 17. SwanSister 02:05 PM 8/26/09

    As someone dealing with the slow loss of vision from diabetic retinopathy, I find this article heartening. I realize there are many ways that the blind can retain independence, and another choice (such as this device) can only be good. I hope it's perfected soon. Definitely worth keeping up with it's progress.

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  18. 18. Aiyuke 06:48 PM 8/27/09

    Can't wait to get the Ford Foundation, Gates Foundation and other well-known foundations to open their eyes and help fund Bach-y-Rita's company to help bring the cost down.

    Wow! What a concept! Congrats to the scientists!

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  19. 19. dididi 07:32 PM 8/27/09

    I am happy that this is available. It is good to see how hard these people are working, generally unnoticed, to help humankind. It goes to show---Always have high hope for the future. Not as irrational sometimes as it seems.

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  20. 20. jeroboambramblejam 10:15 AM 9/20/09

    Cool. But the price is totally arbitrary and strictly corporate. The actual production of such a device wouldn't exceed a couple hundred US. Also, stereo (two cameras... or three) would produce an actual 3D model of the field in front of the wearer, and provide more realistic data.

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  21. 21. badgerroy123 05:23 AM 9/24/09

    as someone that is fast losing there sight this really is an exciting and comforting discovery.im 34 and have a degenerative eye disease and will with certainty be blind within 2 years.this is a truly terrifying thought and iv spent alot of sleepless nights worrying how im going to cope and what life will be like.this gives me alot of hope. thank you.

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  22. 22. Tom Orozco 11:15 AM 9/27/09

    What could happen if the person with that gadget eats chili con carne or some other really spicy food? Don't affect the "vision"?

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  23. 23. Rachel1235256 04:56 AM 10/4/09

    $10k is a ridiculous price. It's a couple hundred dollars worth of electronics at most. More along the lines of a third year EE project. In fact, I might try making one myself.

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  24. 24. kminor2578 06:09 PM 11/17/09

    I think this is absolutely brilliant. If snakes can see with their tongues accurately why couldn't humans.

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  25. 25. Miss Holmes 03:51 PM 12/19/09

    im curious to know if blind people who have been diagnosed with retnitis pigmentosa can benefit from this device. My mother is blind and im interested in helping her see her children and grandchildren again. I am willing to do anything to help her. Please contact me
    mercedes1082@aol.com

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  26. 26. nola caines 02:31 AM 3/17/10

    can this brainport help my nephew who has been blind for 8 years? his optic nerve has died. thanks, it would be wonderful for him to see his daughter, who now is 9

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  27. 27. nola caines 02:32 AM 3/17/10

    can this brainport help my nephew who has been blind for 8 years? his optic nerve has died. thanks, it would be wonderful for him to see his daughter, who now is 9

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  28. 28. begreen157 06:31 PM 12/16/10

    OMG that is so cool. In a few decades from now, if scientists perfect this, it'll be totally normal to see people walking around with weird glasses on. In fact, it would be very normal, considering that one of the last remaining factors of human evolution, domination of the seeing, would be defeated and blindness would be just short of equal to sight.Nah, maybe it ain't so cool. Humans have a very bad habit of overusing technology.

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  29. 29. jmichelsen 11:54 AM 6/12/11

    Many thanks for sharing this great and awesome information.i liked your words....<a href="http://www.gunnars.com/indoor.php">gaming eyeglasses</a>

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  30. 30. alanjfullmer 10:53 PM 9/25/11

    While a brilliant idea, I don't want to know how I taste/see or whatever the term would be. It would probably be similar to tasting pickle juice and cottage cheese.

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  31. 31. AOEUD 01:08 PM 10/27/11

    So... If the user has a congested nose, there's a choice between breathing and seeing? Obviously breathing wins, so the common cold blinds the user for over a week?!

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  32. 32. bebetxx 07:57 AM 3/16/12

    Hey check this movie. You will change your mind. See with tongue.
    http://www.youtube.com/watch?v=IdQi-HYVM1Q or see their website www.seewithtongue.info

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