Current Visual Impairment News and Events

Current Visual Impairment News and Events, Visual Impairment News Articles.
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Sleep is vital to associating emotion with memory, according to U-M study
When you slip into sleep, it's easy to imagine that your brain shuts down, but University of Michigan research suggests that groups of neurons activated during prior learning keep humming, tattooing memories into your brain. (2021-02-22)

'In the blink of an eye' statistics
HSE University researchers Yuri Markov and Natalia Tiurina discovered that when people visually estimate the size of objects, they are also able to consider their distance from the observer, even if there are many such objects. The observers rely not only on the objects' retinal representation, but also on the surrounding context. The paper was published in the journal Acta Psychologica. (2021-02-19)

Neural pathway critical to correcting behavioral errors related to psych disorders found
Mount Sinai researchers have identified a neural pathway through which the brain detects errors and guides subsequent behavioral improvement (2021-02-19)

Human brain taps into visual cues when lacking a sense of touch - study
Evidence that a sense of our physical selves can develop even without the sense of touch has been uncovered in a new study by researchers in the UK and the United States. (2021-02-18)

Columbia researchers uncover altered brain connectivity after prolonged anesthesia
A body of evidence supports the association between prolonged anesthesia and cognitive impairment, but the Columbia study is first to address the effect of the procedure on neural connections. (2021-02-17)

COVID-19 linked to potentially dangerous eye abnormalities
Researchers using MRI have found significant abnormalities in the eyes of some people with severe COVID-19, according to a new study. The study results support the need for eye screening in these patients to provide appropriate treatment and management of potentially severe ophthalmological manifestations of COVID-19. (2021-02-16)

Differences in walking patterns could predict type of cognitive decline in older adults
Canadian researchers are the first to study how different patterns in the way older adults walk could more accurately diagnose different types of dementia and identify Alzheimer's disease. (2021-02-16)

Evidence shows how the human brain may tap into visual cues when lacking a sense of touch
Researchers at the University of Chicago, the University of Birmingham, and Bournemouth University have uncovered evidence that physical embodiment can occur without the sense of touch, thanks to a study involving two participants who lack the ability to feel touch. (2021-02-15)

Prediabetes may be linked to worse brain health
For the study, published in the journal Diabetes, Obesity and Metabolism, researchers analysed data from the UK Biobank of 500,000 people aged 58 years on average, and found that people with higher than normal blood sugar levels were 42% more likely to experience cognitive decline over an average of four years, and were 54% more likely to develop vascular dementia over an average of eight years (although absolute rates of both cognitive decline and dementia were low). (2021-02-11)

White contours induce red hue
A color illusion that strongly induces color contrast effect has been found by a research team at the Toyohashi University of Technology. The powerful visual illusion clarified a century-old contradiction relating to simultaneous color contrast theory. The team demonstrated that the presence or absence of flanking contours formed from extremely thin white lines could be used to switch between contradictory visual phenomena. This solution is expected to contribute to industrial design and high-definition imaging. (2021-02-10)

Oncotarget: Evaluation of cancer-derived myocardial impairments using a mouse model
'The established mouse cachexia model can therefore be considered useful for analyzing cancer-derived myocardial damage' (2021-02-10)

Experiment shows how our visual system avoids overloading
Russian researchers from HSE University have studied a hypothesis regarding the capability of the visual system to automatically categorize objects (i.e., without requiring attention span). The results of a simple and beautiful experiment confirmed this assumption. The paper was published in the journal Scientific Reports. The study was supported by a Russian Science Foundation grant. (2021-02-09)

Correspondence between representations in visual cortices and neural networks
A research group led by Nobuhiko Wagatsuma, Lecturer at Toho University, Akinori Hidaka, Associate Professor at Tokyo Denki University, and Hiroshi Tamura, Associate Professor at Osaka University, found that the neural network structure of attention prediction, based on deep learning used in the development of artificial intelligence, has similar characteristics to the cerebral mechanism of primates. (2021-02-08)

Audiovisual professionalisation affects how the brain perceives media content
According to a study conducted by the Universitat Autònoma de Barcelona, the Instituto Radio Televisión Española and the Universidad Pablo de Olavide in Seville, audiovisual professionals decrease their eyeblink rate after cuts, suggesting that they can better manage the loss of visual information that blinking entails. (2021-02-05)

Researchers assess cognitive impairment in patients with breast cancer
A recent analysis of published studies in Psycho-Oncology estimates that one-quarter of adults with breast cancer have cognitive impairment before starting therapy. (2021-02-03)

Brain-related visual problems may affect one in 30 primary school children
A brain-related visual impairment, which until recently was thought to be rare, may affect one in every 30 children according to new research investigating the prevalence of Cerebral Visual Impairment [CVI]. The University of Bristol-led findings published today [3 February] in Developmental Medicine and Child Neurology, aim to raise awareness of CVI among parents and teachers to help them identify signs of the condition earlier. (2021-02-03)

The benefits of reading outdoors
Investigators demonstrate that image luminance has opposite effects on the contrast sensitivity of cortical pathways signaling lights than darks. It impairs luminance discrimination for the brightest stimuli of the scene while improving it for the darkest stimuli, a mechanism that is needed to efficiently sample natural scenes. (2021-02-02)

Remyelinating drug could improve vision in patients with multiple sclerosis
A team led by a biomedical scientist at the University of California, Riverside, reports a drug -- an estrogen receptor ligand called indazole chloride (IndCl) -- has the potential to improve vision in patients with multiple sclerosis, or MS. The study, performed on mice induced with a model of MS and the first to investigate IndCl's effect on the pathology and function of the complete afferent visual pathway, is published in Brain Pathology. (2021-02-02)

Aging-US: Screening Alzheimer's disease by facial complexion using artificial intelligence
This Aging-US study showed that deep learning programs such as Xception have the ability to differentiate the faces of patients with mild dementia from that of patients without dementia. (2021-02-02)

A study reveals that the brain distributes sensory information highly efficiently
Extracting information from a small fraction of neurons, according to a study published in Nature Communications, involving Rubén Moreno-Bote, a researcher at the Center for Brain and Cognition, together with researchers from the University of Zaragoza and the University of the Basque Country, led by Harvard University (USA). (2021-02-01)

Halved risk for severe retinal disease in extremely premature infants
Risk for a severe form of retinopathy of prematurity, which can cause blindness in extremely premature babies, was halved when the newborns were given a new supplement combining various fatty acids. This was shown in a Swedish study led from the University of Gothenburg. (2021-02-01)

In a tight spot
A newly discovered circuit helps fish to prioritize. (2021-01-27)

Hypnotic suggestions can make a complex task easy by helping vision fill in the blanks
New research demonstrates that hypnosis--the process of focusing a person's attention on a specific task or sensation--can turn a normally difficult visual task into a far easier one by helping individuals mentally ''fill in the gaps'' of missing visual cues. (2021-01-27)

Children cannot ignore what they hear when detecting emotions
Children determine emotion by what they hear, rather than what they see, according to new research. The first-of-its-kind study, by Durham University's Department of Psychology, looked at how children pick up on the emotions of a situation. They found that whilst adults prioritised what they see, young children showed an auditory dominance and overwhelmingly prioritised what they could hear. The researchers say their findings could benefit parents currently managing home learning and professional educators. (2021-01-26)

Growing up in a bilingual home has lasting benefits
New research has found that growing up in a bilingual home can provide unexpected cognitive benefits later in life. The study, published in the journal Scientific Reports, demonstrates for the first time that adults who acquired their second language as a young child (early bilinguals) are quicker at shifting attention and quicker at detecting visual changes compared to adults who learnt their second language later in life (late bilinguals). (2021-01-22)

Does where older US adults die affect their wellbeing at the end of life?
Where people die can affect the quality of their deaths and the end-of-life care that they receive. A study published in the Journal of the American Geriatrics Society found that satisfaction with end-of-life care was rated highest when individuals died at home. (2021-01-21)

Neuronal recycling: This is how our brain allows us to read
Is there an area and cognitive mechanism in our brain specifically devoted to reading? Probably not. According to new research, underlying reading there is evolutionarily ancient function more generally used to process many other visual stimuli. We process letters and words similarly to how we do with any visual stimulus: we identify basic features as shape, size, structure. On the basis of the statistical frequency of specific symbols, we can recognise orthography, understand it and immerse ourselves in the pleasure of reading. (2021-01-21)

Severe menopause symptoms often accompany premature ovarian insufficiency
Hot flashes, insomnia, and vaginal dryness are commonly reported symptoms that accompany the menopause transition. A new study suggests that such symptoms--especially psychological and sexual problems--are worse for women who have premature ovarian insufficiency (POI) than for women undergoing natural menopause. Study results are published online today in Menopause, the journal of The North American Menopause Society (NAMS). (2021-01-20)

Tiny high-tech probes reveal how information flows across the brain
A new study from researchers at the Allen Institute collected and analyzed the largest single dataset of neurons' electrical activity to glean principles of how we perceive the visual world around us. The study, published Wednesday in the journal Nature, captures the hundreds of split-second electrical signals that fire when an animal is interpreting what it sees. (2021-01-20)

Medical terms for opioid addiction don't always reduce stigma, study finds
Researchers conducted a nationally representative study with more than 3,500 participants to test how six common terms describing someone treated for opioid-related impairment influenced perceptions. The researchers found that there was not one single term that can reduce all potential stigma biases. (2021-01-20)

A biological strategy reveals how efficient brain circuitry develops spontaneously
Researchers have explained how the regularly structured topographic maps in the visual cortex of the brain could arise spontaneously to efficiently process visual information. This research provides a new framework for understanding functional architectures in the visual cortex during early developmental stages. (2021-01-19)

Eye tests predict Parkinson's-linked cognitive decline 18 months ahead
Simple vision tests can predict which people with Parkinson's disease will develop cognitive impairment and possible dementia 18 months later, according to a new study by UCL researchers. In a related study, the researchers also found that structural and functional connections of brain regions become decoupled throughout the entire brain in people with Parkinson's disease, particularly among people with vision problems. (2021-01-19)

Appreciating a flower's texture, color, and shape leads to better drone landings
A team of TU Delft and the Westphalian University of Applied Sciences researchers present an optical flow-based learning process that allows robots to estimate distances through the visual appearance (shape, color, texture) of the objects in view. This artificial intelligence (AI)-based learning strategy increases the navigation skills of small flying drones and entails a new hypothesis on insect intelligence. (2021-01-19)

Genetic rewiring behind spectacular evolutionary explosion in East Africa
Genetic rewiring could have driven an evolutionary explosion in the shapes, sizes and adaptations of cichlid fish, in East Africa's answer to Darwin's Galapagos finches. (2021-01-19)

Glass frogs living near roaring waterfalls wave hello to attract mates
A University of California, Berkeley, conservationist has discovered that the glass frog Sachatamia orejuela can be added to the list of species that make use of visual cues in response to their acoustic environments. This is the first time a member of the glass frog family (Centrolenidae) has been observed using visual communication in this manner. (2021-01-15)

Can menopause be blamed for increased forgetfulness and lack of attention?
If you're a bit more forgetful or having more difficulty processing complex concepts than in the past, the problem may be your menopause stage. A new study claims that menopause stage is a key determinant of cognition and, contrary to previous studies, shows that certain cognitive declines may continue into the postmenopause period. Study results are published online today in Menopause, the journal of The North American Menopause Society (NAMS). (2021-01-13)

TalTech's neuroscientists investigate the causes of a widespread eye disease
Fuchs' corneal dystrophy is one of the most common eye diseases diagnosed in almost 5% of the population of Europe aged 40 years or over. It is a hereditary eye disease that causes vision impairment and typically manifests in middle age. The first symptoms of the disease - blisters on the surface of your cornea - resemble cataract at first glance. (2021-01-13)

Tweaking AI software to function like a human brain improves computer's learning ability
Computer-based artificial intelligence can function more like human intelligence when programmed to use a much faster technique for learning new objects, say two neuroscientists who designed such a model that was designed to mirror human visual learning. (2021-01-12)

Master designers: Architects of the brain revealed
In a study published in Cell Reports, researchers at Kanazawa University identify pathways in the brain which enable neurons to assemble into functional units resembling tall columns. (2021-01-12)

A brain mechanism underlying 'vision' in the blind is revealed
Researchers observed slow spontaneous fluctuations in the brain's visual centers that preceded visual hallucinations in blind people. (2021-01-07)

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