Sentences with phrase «primary visual cortex»

Individuals with a smaller primary visual cortex perceived a much more pronounced visual illusion than those individuals with a larger visual cortex.

Task Difficulty Modulates the Activity of Specific Neuronal Populations in Primary Visual Cortex.

In humans, microstimulation of primary visual cortex has been shown to induce phosphenes (Schmidt et al., 1996), and microstimulation of the substantia nigra can influence reinforcement learning (Ramayya et al., 2014).

Using brain scans to compare the gray matter of children with RAD to typically developing children, the researchers found significantly reduced volume of gray matter in the area of the brain known as the left primary visual cortex.

Left: Reconstruction of pyramidal neurons from mouse primary visual cortex.

As visual input flows from the retina into primary visual cortex and then inferotemporal (IT) cortex, it is processed at each level and becomes more specific until objects can be identified.

When photoreceptors in the retina of the eye detect light, they relay the information toward the brain's primary visual cortex for image processing.

Spatially global representations in human primary visual cortex during working memory maintenance

Many response properties in primary auditory cortex (AI) are segregated spatially and organized topographically as those in primary visual cortex.

A recent study in Nature Neuroscience provides evidence that individual perceptual differences may not be so influenced by culture as by the size of our primary visual cortex.

They used macaques in which parts of the primary visual cortex had been destroyed.

Ro speculates that blindsight happens when our eyes take in images that bypass the primary visual cortex, the brain's main vision center.

Hubel and Wiesel were already renowned for having charted the architecture of the primary visual cortex (the area of the cerebral cortex, at the back of the head, that receives input from the retinas).

«Even the primary visual cortex, the first visual area of the brain that registers input from the eyes, is activated by imagery with the eyes closed.

Although the primary visual cortex usually communicates mainly with other parts of the vision system, many other brain areas contributed to the processing of images in volunteers who received LSD.

The findings suggest that the primary visual cortex, the first part of the cerebral cortex to receive retinal information, lights up during our daydreaming as well.

Recent imaging experiments have provided further support that the primary visual cortex (V1) encodes images this way.

When you stare in puzzlement at an optical illusion, two distinct parts of the neocortex in your brain are hard at work: the primary visual cortex is receiving information on what your eyes see, and the surrounding higher order visual areas are trying to interpret that tricky amalgam of information.

Recent work by Krish Sathian of Emory University and Alvaro Pascual - Leone of Harvard University suggests that somatosensory signals (those having to do with touch) may be seen in the primary visual cortex under certain circumstances — for example, in blind Braille readers.

The primary visual cortex is the area of the cerebral cortex with the most detailed representation of visual space and the main recipient of eye inputs coming through the visual thalamus.

In their recent PNAS paper members of the Imperial College team reported that the presence of LSD was linked to a boost in blood flow and functional connectivity between the brain's primary visual cortex and seemingly unrelated brain networks that mediate other sensory inputs as well as higher - level processes including emotion.

In collaboration with the laboratories of neuroscientists Jose - Manuel Alonso of the SUNY College of Optometry and Harvey Swadlow of the University of Connecticut, we discovered the initial circuits that mediate attention in the primary visual cortex of the brain.

The primary visual cortex is Brodmann area 17, located in the interior portion of the occipital lobe at the calcarine sulcus and sometimes continuing onto the surface of the lobe.

This fundamental organization of the visual cortex was even found in people whose eyes did not develop normally, suggesting normal eye development may not be necessary for the establishment of large - scale functional connectivity network mapping in the most fundamental visual areas like V1, the primary visual cortex.

This idea has also been tested physiologically, by recording from individual neurons in two areas of the monkey brain: the primary visual cortex (V1), which receives signals from the retina (after being relayed through the thalamus), and the middle temporal area (MT) on the side of the brain, which is specialized for seeing motion.

This functional magnetic resonance imaging map shows a center periphery connectivity mass in the primary visual cortex (V1) of the congenitally blind brain.

When light hits the retina, the visual signal zips to a region of the brain called the primary visual cortex, or V1.

The information regarding those details are forwarded completely and immediately by the primary visual cortex.

«It was therefore a surprise to discover that the data volumes are considerably reduced as early as in the primary visual cortex, the bottleneck leading to the cerebrum,» says PD Dr Dirk Jancke from the Institute for Neural Computation at the Ruhr - Universität.

Data compression in the brain: When the primary visual cortex processes sequences of complete images and images with missing elements — here vertical contours — it «subtracts» the images from each other.

Using an imaging procedure with high resolutions, the scientists revealed that a simultaneous counterchange of luminance of neighboring stimuli creates a sequential activation in the primary visual cortex.

Specifically, they have found evidence of processing in the human lateral geniculate nucleus (LGN), a small node in the thalamus in the middle of the brain that relays nerve impulses from the retina to the primary visual cortex.

Someone whose striate cortex (primary visual cortex) has been damaged or destroyed can sometimes identify the position and even the shape of light stimuli without the aid of any conscious visual experience.

«The cool part,» Liu says, «is the clockwise and counterclockwise neurons are all intermingled in the same part of the brain,» the primary visual cortex.

«The primary visual cortex, the first visual area of the brain that registers input from the eyes, is even activated by imagery with the eyes closed.

London, UK (Scicasts)-- Neuroscientists have identified a circuit in the primary visual cortex (V1) of the brain that integrates head - and visual - motion signals.

Ocular dominance columns form a zebra - like pattern of stripes in part of the primary visual cortex.

Each tab in the spreadsheet represents human or chimpanzee expression data from anterior cingulate cortex (ACC; layers 3, 5), primary motor cortex (M1; layers 3, 5), primary sensory cortex (S1; layers 3, 4, 5), primary visual cortex (V1; layers 3, 4a, 4b, 4c, 5), caudate nucleus (CN; gray matter), or cerebellum (CB; granule cell layer).

First, the average visual module includes only the area of the primary visual cortex.

«Our finding will provide a new strategy for rehabilitation of these patients with damage in the primary visual cortex.

He studied functional circuit processing throughout the visual system, including thalamus, primary visual cortex and extrastriate visual areas using in vivo two - photon imaging, calcium sensors and viral tracers.