Over 285 million people are visually impaired in the world. What if they could see using their taste buds in the tongue rather than their eyes?
A woman who is blind puts on a pair of glasses that contain a camera. The image from the camera is sent to a small device about the size of a postage stamp that sits on her tongue. She feels a sensation like soda bubbles on her tongue—this is the camera signals being sent to electrodes on her tongue. This information then goes either to the visual cortex or to the part of the brain that processes taste signals from the tongue. The scientists who developed this technology say they aren’t sure which part of the brain is actually receiving the information from the tongue in this situation.The taste buds are seeing — The experience of the woman when her brain receives the signals from her tongue is that she sees shapes. The vision is not the same as normal sight, but she can see enough that she can better navigate her environment. People who are totally blind can find doorways and elevator buttons when they use the device, called a BrainPort. They can read letters and numbers and pick up everyday objects, for example, a fork at the dinner table.
The brain is learning — When someone uses the BrainPort at first, they don’t see anything. It takes fifteen minutes for them to start to interpret the signals as visual information. Interestingly, it’s not that they have to “learn” anything —it’s not that they are conscious of practicing. The brain is unconsciously learning to interpret the information as vision.
Design to augment — According to the World Health Organization, over 39 million are blind and 246 million have moderate to severe visual impairment.Over 360 million have disabling hearing loss. Until now, designing devices for people with visual, auditory, or other physical impairments has been an area that a small number of designers have worked on. The rest of the designers have been told to make their designs “accessible” so that the special devices (such as screen readers) are compatible and can use the mainstream technologies. Keeping accessibility in mind is always important, but now more designers will be directly designing devices that are specifically created to augment the impaired sense.
What do you think? Will these devices become more common? If you are a designer would you like to work in this field?
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