Sentences with phrase «retinal image»

The group analyzed neuron activity in the monkey's visual cortical area V4 and found that cells in this area integrated information about retinal image size and the distance from the object to calculate the size of the object.

Hospital systems also would need to acquire special cameras for taking retinal images, as well as training NICU staff and establishing remote image reading centers.

The image readers, all of them non-physicians, followed a standard protocol to assess whether features of RW - ROP were present in retinal images.

Anatomical and physiological observations in monkeys indicate that the primate visual system consists of several separate and independent subdivisions that analyze different aspects of the same retinal image: cells in cortical visual areas 1 and 2 and higher visual areas are segregated into three interdigitating subdivisions that differ in their selectivity for color, stereopsis, movement, and orientation.

One algorithm that studied retinal images from over 284,000 patients could predict cardiovascular health risk factors such as high blood pressure.

Trained non-physician evaluators who studied retinal images transmitted to computer screens at a remote central reading center successfully identified newborn infants likely to require a specialized medical evaluation for retinopathy of prematurity (ROP), a leading cause of treatable blindness.

The implantable mini-scope, developed by Saratoga, Calif. - based VisionCare Ophthalmic Technologies, works with the eye's cornea like a telephoto system, rendering an enlarged retinal image designed to reduce the area of diminished vision.

To see the three dimensions, our brain must reconstruct the three - dimensional world from our two - dimensional retinal images.

In a lineage drawn from Viktor Vasarely, Cracco combines the subtleties of color with both optics and illusion to create retinal images that work on multiple levels.

Taking retinal images to help determine the health of a patient's eyes and performing OCT scans on patients with various eye conditions.

The fact that the same retinal image can give more than one perception, as when perceptions «flip», is useful because it lets us separate «bottom - up» (from the eye) from «top - down» (from the brain) processes.

The manner in which the brain deals with inexplicable gaps in the retinal image — a process called filling in — provides a striking example of this principle.

That time lengthened with the distance between features, suggesting — but not proving — that the brain pans across an imagined scene depicted with the same spatial topography as a retinal image.

This group's experiment verified that cells in the visual cortical area V4 do not react to the retinal image size but to the size of the object.

In contrast, if neurons convey information about object size, they are expected to react to the small retinal image when the object is far away and to react to the big retinal image when the object is near.

It was believed that neurons responded to the size of the image formed on the eye (retinal image); however, size constancy can not be achieved by such cells alone.

Ichiro Fujita and Shingo Tanaka, then student in the doctoral course of Graduate School of Frontier Biosciences, Osaka University, examined if there were cells that express not the retinal image size, but the size of the object itself.

When an object is far away, its retinal image size becomes small, and when the object is near, its retinal image size becomes big.

A group of researchers at Osaka University found that neurons in the monkey visual cortical area V4 * 1, one of the areas in the visual cortex, calculate the size of an object based on information on its retinal image size and the distance from the object.

If neurons respond to the same retinal image size, even if the distance from the object changes, they are supposed to react to retinal image size.

It's possible to screen for severe ROP by sending a retinal image taken in the NICU to an off - site reader.

This includes the retinal images of normal objects.

Clements is concerned with the retinal image before the mind interprets it, but also its evolution through time, space and light.

Later, bioscientific works such as Gary Schneider's Genetic Self - Portraits (1997 — 1998) or Marc Quinn's A Genomic Portrait: Sir John Sulston (2001)-- in which a sample of the sitter's DNA in agar jelly is mounted in stainless steel — took the bearers of identity to be images of chromosomes, enlargements of microscopic hair samples, retinal images, and even mounted DNA itself.