White pixels yield strong electrical signals that some say feel like champagne bubbles, while black pixels give no signal. This technology uses the tongue because it is more sensitive and a better electrical conductor than other areas of the body, such as the hands or the back. The device can also be used to address problems of balance. Sensors transmit information about the position of your head, the amount of pressure on your feet and other bodily positions and then relay the data to your tongue, where you learn to interpret your position in space and make the adjustments you need to stand straight, or to walk without fear of falling.
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A new device that could make the blind people gain their vision has been developed by scientists. This device is known as BrainPort vision device or the electric lollipop. The impulses are then sent to the different sensory centers of the brain for interpretation through an electrode array placed on the tongue. This works in a similar fashion, like tasting a toffee. The BrainPort technology could totally change the way of interaction for the blind people with others.
It may help in their personal growth and make them feel that they are not blind anymore. The machine is called the BrainPort vision device and is manufactured by Wicab, Inc.
It relies on sensory substitution, the process in which if one sense is damaged, the part of the brain that would normally control that sense can learn to perform another function.
About two million optic nerves are required to transmit visual signals from the retina. With BrainPort device, visual data are collected through a small digital video camera about 1.
Bypassing the eyes, the data are transmitted to a handheld base unit, which is a little larger than a cell phone. This unit houses such features as zoom control, light settings and shock intensity levels as well as a central processing unit CPU , which converts the digital signal into electrical pulses replacing the function of the retina. Part of the challenge of BrainPort is to train the brain to interpret the information it receives through the stimulation device and use it like data from a natural sense.
Research from prototype devices showed such training is possible, as patients with a severe bilateral vestibular loss could, after time, maintain near-normal posture control while sitting and walking, even on uneven surfaces. Why is it known as a Tasting Device? Other than the normal use of tongue for tasting the food, eating, talking there are also many other uses. One of them is for sensing of light. It is called as tasting because it can taste the light and sense the objects.
It is this property which is used in BrainPort vision device. The lollipop contains a square grid of electrodes which pulse according to how much light is in that area of the picture.
White pixels have a strong pulse while black pixels give no signal. The control unit converts the image into a low resolution black, white and gray picture, which is then recreated as a square grid of electrodes — around the size of a postage stamp — on the lollipop.
Each of the electrodes pulses according to how much light is in that area of the picture. It converts pictures into electrical pulses and it is placed on the tongue.
Electrode array that is placed on the tongue. The other side of the electrode array is an accelerometer. Named BrainPort, and developed by Wicab Inc. Sensitive nerve fibers on the tongue respond to electrodes to enable a rapid transfer of electrical information. The working of the BrainPort device can be divided into 3 stages. The following video explains the working of the BrainPort device.
Other parts of the body, such as the back, were not sufficiently sensitive. The fingertips were sensitive enough, but people wanted full use of their hands to grip a cane or to grab objects. Placing the device on the tongue inside the mouth frees the hands to interact with the environment, Plus, the device can be hidden in the mouth. 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.
This device has been tested on several blind people; one among them is Erik Weihenmayer. A genetic eye condition known as retinoschisis caused him to be visually impaired at birth and completely blind by age In retinoschisis, tiny cysts form within the eyes delicate retinal tissue, eventually causing its layers to split apart.
Neither medication nor surgery can restore sight. But with the help and practicing this device he was at least able to identify the obstacles, objects around him and can also read the signs. And by use of this device he has climbed mountains around the world — the highest peaks, in fact, on every continent. Science has always provided mankind with answers and solutions, and science will continue to do so, while simultaneously supplying us with improvements upon previous technologies or new technologies altogether.
Today, humanity owes the majority of our commodities, from prosthetic limbs to iPods, to years of scientific research and collaboration between different scientific disciplines. Unfortunately, however much science may have contributed to improving our lives, there is still plenty of headway to be made. We are always looking for areas in which our interdisciplinary strengths can be leveraged to revolutionize areas of science, engineering, and technology, and to improve the quality of life for millions of people.
The brain appears to be flexible when it comes to interpreting sensory input. You can train it to read input from, say, the tactile channel, as visual or balance information, and to act on it accordingly.
There is a hope that a balance device that uses nerve fibers on the tongue to transmit information about head and body position to the brain can make a serious difference for patients whose sight cannot be replaced.
Thus we hope that blind people can also see this colorful world by using this brainport device. I am working on the same project and i really found it helpful. Sir, can u send me full details of this particular project, it help to me a lot for paper presentation.
Thanks for contacting us Megha. You can refer to the content posted here. You have an option to email it to yourself via sharing buttons. I will be glad if you help me. Email Krishnashrestha gmail.
This is really an awesome one but sir I need a help can u sir help me wid any new paper for seminar. Otherwise can u please send me the pdf and ppt of this paper.. This has been already implemented. If you pick this as your project, You would need to buy the device and show implementation.
BrainPort Vision Device Unit. Suggested articles for you:. Did it help? Comment here.. Cancel reply.
The climbers at Earth Treks gym, in Golden, Colorado, were warming up: stretching, strapping themselves into harnesses, and chalking their hands as they prepared to scale walls stippled with multicolored plastic holds. Seated off to one side, with a slim gray plastic band wrapped around his brow, Erik Weihenmayer was warming up, too—by reading flash cards. It was. Weihenmayer moved triumphantly on to the next card.
BrainPort Vision Device
Test results for the BrainPort vision device are no less encouraging, although Wicab has not yet performed formal clinical trials with the setup. According to the University of Washington Department of Ophthalmology, million people in the United States alone suffer from visual impairment. This might be age-related, including cataracts, glaucoma and macular degeneration, from diseases like trachoma, diabetes or HIV , or the result of eye trauma from an accident. BrainPort could provide vision-impaired people with limited forms of sight. To produce tactile vision , BrainPort uses a camera to capture visual data.