Retina in sentence

79 examples of Retina in a sentence

[51 Days] [Developing retina, nose and fingers] [The fetus' continual movement in the womb is necessary for muscular and skeletal growth.]

But sometime ago, through the help of an opthamologist colleague of mine, Carmen Puliafito, who developed a laser scanner of the retina, I found out the the following.

If I scan my retina through the horizontal plane that you see there in the little corner, what I get is the following.

On the right side, my retina is perfectly symmetrical.

But on my left retina there is a bump, which is marked there by the red arrow.

So this is how close your mental experience and the activity of the neurons in the retina, which is a part of the brain located in the eyeball, or, for that matter, a sheet of visual cortex.

So from the retina you go onto visual cortex.

And of course, the brain adds on a lot of information to what is going on in the signals that come from the retina.

There are 10 million people in the U.S. and many more worldwide who are blind or are facing blindness due to diseases of the retina, diseases like macular degeneration, and there's little that can be done for them.

Okay, so let me back up a little bit and show you how a normal retina works first so you can see the problem that we were trying to solve.

Here you have a retina.

So you have an image, a retina, and a brain.

So when you look at something, like this image of this baby's face, it goes into your eye and it lands on your retina, on the front-end cells here, the photoreceptors.

So, a solution to the problem, then, would be to build a device that could mimic the actions of that front-end circuitry and send signals to the retina's output cells, and they can go back to doing their normal job of sending signals to the brain.

So a completely blind retina, even one with no front-end circuitry at all, no photoreceptors, can now send out normal signals, signals that the brain can understand.

In other words, we're not literally replacing the components of the retina.

We've just abstracted what the retina's doing with a set of equations.

An image comes in, goes through the set of equations, and out comes streams of electrical pulses, just like a normal retina would produce.

So what we did is we took a moment in time from these recordings and asked, what was the retina seeing at that moment?

Can we reconstruct what the retina was seeing from the responses from the firing patterns?

So on the left is the encoder alone, and on the right is from an actual blind retina, so the encoder and the transducer.

When this first came out, it was just a really exciting thing, the idea that you even make a blind retina respond at all.

So the same strategy that we used to find the code for the retina we can also use to find the code for other areas, for example, the auditory system and the motor system, so for treating deafness and for motor disorders.

So just the same way that we were able to jump over the damaged circuitry in the retina to get to the retina's output cells, we can jump over the damaged circuitry in the cochlea to get the auditory nerve, or jump over damaged areas in the cortex, in the motor cortex, to bridge the gap produced by a stroke.

This is a degeneration of the retina.

And in that episode, I answer the question and I get a chance to explain what would normally be kind of dry topics: optics, diffuse versus specular reflection, how light works, how light works on the retina, and even the etymology of color terms like white and black.

For example, our eyes have blind spots where the optic nerve blocks part of the retina.

Traditionally, this requires expensive equipment to examine an area called the retina.

The retina is the single part of the eye that has huge amounts of information about the body and its health.

We can see all parts of the retina.

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