Sentences with phrase «nonoptical cells of the retina»

Consider also his claim that «the right way to think» about a visual experience is that «photons reflected off objects attack the photoreceptor cells of the retina and this sets up a series of neuronal processes (the retina being part of the brain), which eventually result, if all goes well, in a visual experience that is a perception of the very object that originally reflected the photons» (MC 64).

The cells of our retinas, however, lack this ability to regenerate.

The therapy employs a virus to insert a gene for a common ion channel into normally blind cells of the retina that survive after the light - responsive rod and cone photoreceptor cells die as a result of diseases such as retinitis pigmentosa.

The team found that the Amyloid beta proteins entered the cells of the retina within 24 hours of exposure and then began to break the cell's scaffold structure.

Human - induced pluripotent stem (iPS) cells can be directed to develop into light - sensing photoreceptor cells of the retina.

My hope is to discover how age - related mitochondria dysfunction in cells of the retina lead to macular degeneration.

Imagine how difficult it is for a patient and their family and friends when they lose vision, as is the case in a disorder such as age - related macular degeneration (AMD), where the unexpected sprouting of weak and leaky new blood vessels leads to death the ath of the nerve cells of the retina.

Final Report Summary: Glaucoma is a silent disease that, over time, kills the nerve cells of the retina leading to irreversible blindness.

In many forms of human retinal disease, including age - related macular degeneration (AMD), the underlying pathogenesis resides within the support cells of the retina, the retinal pigment epithelium (RPE).

Light perception takes place in the cone and rod photoreceptor cells of the retina, a structure at the back of the eye, through a set of proteins denominated phototransduction cascade proteins.

Paulaitis says «the novel concepts put forth in this study, of investigating small molecules called microRNAs to see what they can tell us about mitochondria disorders in cells of the retina, hold great promise of providing new insights into how age - related macular degeneration develops, after which new treatments can be designed to save or improve vision.»

This is because melanopsin — a photopigment found in specialized cells of the retina involved in the regulation of circadian rhythms — is most sensitive to blue light.

Also, from Wikipedia re Sorbitol, the Polyol Pathway and Aldose Reductase: «While most cells require the action of insulin for glucose to gain entry into the cell, the cells of the retina, kidney, and nervous tissues are insulin - INdependent, so glucose moves freely across the cell membrane, regardless of the action of insulin.

Progressive retinal atrophy (PRA)-- This is a condition where the cells of the retina slowly die.

This is different from typical progressive retinal degeneration (PRA), which involves both the rod and cone cells of the retina causing night blindness and worsening day vision.

In this type of PRA the rod and cone cells of the retina develop normally but gradually degenerate.

This test detects the small electrical signals given off by the cells of the retina when they respond to light.

In low lighting not only do camera sensors fail to show colours, so do the cone cells of our retinas!

Not exact matches

Did it started off as a mass of white ball, then it slowly started developing nerves, retina, a cornea, and essentially a complex apparatus for capturing light and transmitting it via nerve cells to the brain?

Docosahexaenoic acid is incorporated in large amounts into cell membranes of the developing retina and brain.

That light goes through the transparent liquid behind the lens and strikes the retina, a thin film of light - sensitive nerve cells that line the back of the eye.

In most vertebrates and some mollusks, the eye works by allowing light to enter it and project onto a light - sensitive panel of cells known as the retina at the rear of the eye, where the light is detected and converted into electrical signals.

A layer of cells called the retinal pigment epithelium (RPE) is essential for supporting and nourishing the retina cells that capture light for vision.

But is it fair to equate historical constraints with defects in describing how vertebrate photoreceptors are on the back of the «inside - out» retina, shadowed by blood vessels and overlying cells?

Neurons that fire in response to horizontal and vertical movements had already been found in the retinas of mammals, but the only cells known to be sensitive to approaching objects were in the brain.

The exterior of the nanoparticle is coated with nucleic acids that act as targeting agents, drawing the delivery system to the retina and facilitating uptake by RPE cells.

Following injection into the retina of mice, the researchers could see fluorescent green concentrating in RPE cells.

To test the cells» abilities, the researchers injected them into the injured body parts of rodents with diabetes or injuries that cut off blood flow to the retina, heart or hind leg.

This gives just enough time for light signals from the baseball to hit the batter's eye, work through the circuitry of the retina, activate successions of cells along the loopy superhighways of the visual system at the back of the head, cross vast territories to the motor areas, and modify the contraction of the muscles swinging the bat.

Disease or an injury to the retina also can cause the loss of protective proteins in the cells, resulting in additional cell death.

To find out, the researchers injected a cloned telomerase gene into cultured cells from retina, skin, and blood vessels, all of which are associated with degenerative, aging - related diseases.

Cone cells in the retina each carry a stack of membranous discs: as they grow they shed older discs and generate new ones.

One is the inability to replace the function of cells in the retina with a digital camera.

This mechanism consists of introducing bone marrow stem cells into the damaged retina.

Orange Glow The inside of the eye derives its orange color from a layer of pigment cells inside the retina.

«These cyanobacteria use the entire cell body as a lens to focus an image of the light source at the cell membrane, as in the retina of an animal eye,» says University of London microbiologist Conrad Mullineaux, who helped to make the discovery.

Researchers in France and Sweden have, over the past couple of years, shown that when BMAA is injected into rodents it gets incorporated into their eyes (pdf), where it could build up and potentially cause damage to cells in the retina.

The downside is that people with these eye diseases are losing sight in large part because they're losing a different type of eye cell: the photoreceptors that sense light in the retina.

Neuroscientists usually explain color illusions in mechanistic terms: They arise because of the way cells in the retina and the brain respond to certain wavelengths of light.

The volunteers, ranging in age from 20 to 88, received injections under their retina of a particular type of eye cell, retinal pigment epithelium (RPE) cells, which were derived from hESCs in the lab.

Blind Spot A layer of nerve cells coats the innermost surface of the retina.

LCA is a rare inherited eye disease that destroys vision by killing photoreceptors — light - sensitive cells in the retina at the back of the eye.

Each of our retinas has a small patch of densely packed, light - sensitive cells called the fovea.

The ganglion cells are third or fourth in a chain of neurons triggered when light strikes the retina; the study suggested that neurons somewhere in this path calculate movement direction from the timed interplay of excitatory and inhibitory neural impulses.

Exposure to blinding light killed photoreceptor cells in the retinas of mice (left, dying cells colored pink).

As with brain cells, the neurons of the retina are basically irreplaceable.

Johns Hopkins researchers have developed a method to efficiently turn human stem cells into retinal ganglion cells, the type of nerve cells located within the retina that transmit visual signals from the eye to the brain.

When the researchers injected human umbilical stem cells behind the retinas of these rats, the Müller glia remained healthy, as did the neural synapses.

Long, tree - shaped cells called Müller glia span the entire thickness of the retina, wrapping their branches around neurons to support their health and encourage the development of synapses.

The photoreceptors in the retina, at the back of the eyes, are the primary light sensitive cells that allow us to see: they convert light into electrical signals.