Tuesday, November 07, 2006

Researchers Create Artificial Retina From Silicon

I came across an interesting article today about artificial retinas.

From the article:

Researchers from the University of Pennsylvania and Stanford University have made a breakthrough in the field of vision. Kareem Amir Zaghloul and Kwabena Boahen have proposed a silicon retina that reproduces signals in the optic nerve, a technology which could be used to provide vision to those who suffer from blindness-related diseases, such as retinitis pigmentosa

. . .

“We morphed our retinal model into a silicon chip by replacing each synapse or gap junction in our model with a transistor,” Zaghloul and Boahen revealed. “One of its terminals is connected to the pre-synaptic node, another to the post-synaptic node and a third to the modulatory node. By permuting these assignments, we realize excitation, inhibition and conduction, all of which are under modulatory control.”

It's too bad the article doesn't explain how everything works, but I suppose that's a good reason to read the journal article and take a neurophysiology course and an eye anatomy course.


Blogger Phillip Dreizen said...

Are you sure this artificial retina has the proper causal properties? :-)

11:49 PM  
Blogger Jonathan said...


12:23 PM  

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