One of the most exciting ideas that’s been explored at the Delhi Asylum recently has got to be Shruti & Naman’s electrooculography project.

https://www.flickr.com/photos/125352978@N05/23320393213/in/album-72157658468540358/

Electrooculography is a a fantastic concept that the two stumbled upon during their winter training at college. It inspired them to whip up a quick model to test it out.

https://www.flickr.com/photos/125352978@N05/23921091466/in/album-72157658468540358/

The way it works, is by placing pairs of electrodes around the eyes, it becomes possible to measure the subtlest of eye movements.

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If the eye moves from the centre to either of the two electrodes, the electrodes can ‘see’ the positive and negative sides of the retina. This causes a potential difference between the electrodes. Assuming the resting potential stays constant, the recorded potential is a measure of the eye’s position.

https://www.flickr.com/photos/125352978@N05/23579301059/in/album-72157658468540358/

As a proof of concept, they chose to control a robotic arm using the EOG circuit. The plan however is to scale the project up and implement it on a wheelchair. It could be of tremendous use to paralysed patients.

https://www.flickr.com/photos/125352978@N05/23651483480/in/album-72157658468540358/

In addition, they also plan to introduce components into the setup that would allow for 3D mapping of the area, letting the wheelchair sense whether it’s advisable to move forward or not.

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Given the potential of this project, we can’t wait to see Shruti & Naman explore this idea further and hopefully implement their wheelchair prototype soon!