Articles tagged with Visual Perception
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Research at Goethe University Frankfurt reveals that the human brain prepares for dawn and dusk by reducing resting activity in the visual cortex, allowing it to process weak visual stimuli more effectively during these times. This mechanism may have provided an evolutionary advantage in the pre-industrial era.
A recent study revealed neural clustering in V4 that preserves visual acuity, enabling the separation of local and global features. This discovery challenges existing models and offers new insights into how the brain processes visual information.
Researchers found that people closely watch lip movement and shape when perceiving speech, with subtle distinctions between vowel sounds suffering without these cues. The study's findings have implications for designing more intelligible avatars and improving communication devices for the hearing impaired.
A study has linked individual variation in biological motion perception to genetic factors, revealing a common genetic basis for heritable aspects of BM perception and autistic traits. Genetic influences account for up to 50% of individual variation in local kinematics processing, while environmental factors shape global configuration ...
A new study led by Colorado State University researcher Jessica Witt investigates the impact of actions on vision. The findings suggest that vision is influenced by actions, but this effect may not be entirely dependent on the participant's level of understanding the experiment's purpose.
Cognitive psychologists found that people can accurately estimate both mean size and number of objects in separate tasks, suggesting two independent processes. This discovery can inform new approaches to statistical data visualization and education.
Research explores military-related brain disorders and potential treatments, including improved visual responses and neural stem cell therapy. Disruptions in brain networks may underlie symptoms of Gulf War Illness, such as changes in vision, language function, pain perception, and mood regulation.
A UCLA-led study reveals that sleep deprivation affects the ability of brain cells to communicate with each other, leading to mental lapses in memory and visual perception. The researchers discovered that lack of sleep also slows down brain cell activity, causing sluggish cellular activity and performance issues.
A new study by Ohio State University finds that moderately farsighted preschoolers have poorer scores on attention-related tests. The research suggests that uncorrected vision problems in young children can lead to deficits in learning and literacy.
Researchers at McGill University have shown that practice can alter the way the brain uses sensory information, including visual perception. By temporarily deactivating a critical brain region, subjects who practiced with moving lines were able to perceive motion despite the region's inactivation.
Neurons in the brain receive information from large parts of the visual field to form a coherent perceptual image. The study found that neurons are most likely connected if they react to edges on a common axis, mirroring the structure of the visual world.
Researchers found that exposure to a common visual illusion enhances ability to read fine print by improving visual acuity. Participants who saw clockwise spirals showed improved performance in reading letters at smaller font sizes.
Scientists have discovered that hypnotic states significantly impair deep processing operations while allowing simple perception to occur. This suggests that hypnosis affects specific regions of the brain when receiving visual stimuli.
Researchers analyzed how neurons in V2 respond to natural scenes, discovering three principles: combining edges, cross-orientation suppression, and repeating patterns. This work provides insight into the brain's ability to recognize faces, cars, and other objects.
A recent study found that cultural differences in visual processing affect the ability to discern simple differences between geometric figures. North Americans took longer to identify a straight line among tilted ones compared to Japanese volunteers.
Researchers at National Research University Higher School of Economics found that repetition of nouns and verbs can enhance the syntactic priming effect. The study shows that repetition of any content word in a sentence boosts syntactic priming, with more repeated words resulting in stronger effects.
Researchers have developed an algorithm to automatically improve the design of scatterplots by exploiting models and measures of human perception. The optimized designs effectively communicate relationships between two data variables, reducing unintended miscommunication.
Researchers created an algorithm to understand how the brain combines auditory and visual speech cues, shedding light on the McGurk effect. The findings will help improve speech perception in patients with deficits and enhance hearing in devices.
A multidisciplinary team from UChicago is developing wireless brain implants that can convert camera input into electrical stimulations to produce useful visual perception in the brain. The technology could restore partial vision to people who have lost their sight, significantly improving their quality of life.
The brain can distinguish between expected and unexpected visual motion by selectively silencing neurons sensitive to yaw during intentional turns. This allows flies to stabilize their flight path and shift their gaze without interference. The study provides insights into how the brain processes visual information to control behavior
A new study found that children with poor vision show vast improvement in their peripheral vision after eight hours of training via kid-friendly video games. The game trains players to pay attention to the entire visual field, not just where their vision is most impaired, resulting in up to 50% improvement in visual perception tasks.
Researchers at UC Berkeley discovered that humans use visual cues to quickly determine if something is lifelike or not. In real life, this allows us to navigate social situations and avoid confusion, while in the lab, participants accurately rated groups of images as more or less lifelike even when shown for just 250 milliseconds.
Researchers discovered a neural circuit in fruit flies that creates an internal representation of direction and velocity, allowing them to navigate accurately. This finding has implications for our understanding of self-movement perception in humans and other animals.
A study by researchers at the University of Wisconsin-Madison found that visual interference can disrupt recall of what things look like. The study, published in the Journal of Memory and Language, challenged widely held theories about visual knowledge and how it is processed in the brain.
A new study using Bayesian inference models shows that humans anticipate future events based on past experiences, but the accuracy of their responses differs from reality when stimuli are accelerated or delayed. This suggests that our brain continuously updates probability of encountering future stimuli.
Researchers have discovered specific cell types and mechanisms responsible for orientation selectivity in the retina of zebrafish, shedding light on how we perceive and recognize visual stimuli. The study reveals that mutating a key protein called Teneurin-3 leads to a loss of orientation selectivity in neurons.
Researchers found that even when conflicting information is invisible, the human brain initiates mechanisms to resolve it. This occurs in the early visual cortex with minimal involvement of the fronto-parietal cortex.
Research shows that older adults experience age-related deficits in inhibition, leading to slower processing of visual information. This decline affects their ability to distinguish between familiar and novel objects, making it harder for them to perceive shapes and objects clearly.
Scientists propose a computational model explaining multisensory integration in humans, utilizing a Multisensory Correlation Detector. The brain detects similarity across visual and auditory signals to integrate stimuli, opening new clinical perspectives for neurological syndromes like Autism Spectrum Disorder and Dyslexia.
Research by Dr. Sven Joubert reveals that Alzheimer's disease affects holistic face perception, leading to difficulties in recognizing faces of family members or celebrities. This impairment is observed even in the early stages of the disease, highlighting potential strategies for patients to recognize their loved ones for longer.
A University at Buffalo-led study finds that gamers become less responsive to guilt-inducing stimuli as they repeatedly play violent video games, leading to a loss of moral response over time.
Researchers at the University of Pennsylvania have discovered that the occipital place area (OPA) plays a key role in perceiving boundaries during navigation. By using transcranial magnetic stimulation to disrupt normal processing, the team found that participants made more errors navigating around boundaries but not landmarks.
Researchers at KU Leuven found that the human brain completes missing parts of objects using visual cues, leading to the 'shrunken finger illusion'. This counterintuitive phenomenon suggests our brains rely on visual system, not imagination, to fill in gaps. The study's findings provide new insights into perception and cognition.
A study published in Attention, Perception, & Psychophysics reveals that people can intentionally exclude objects from their mental model of their environment. Test observers were faster at finding a target when the objects matched the color of the rectangle, but not when they did not, indicating top-down control over attention.
Researchers at Johns Hopkins University found that expertise influences how people process visual information, with novices faster to identify letter pairs but less accurate. The study used the Arabic alphabet and showed participants 2,000 pairs of letters, revealing biases in expert perception that went beyond visual features.
Researchers at Johns Hopkins University found that giving people time to learn what's possible to ignore improves visual search performance. Participants who were told to ignore distracting colors on a computer screen found the target letters faster and more efficiently over time.
Cognitive neuroscientist Rosie Cowell is using a five-year grant to develop and test a theory of memory interaction with fine-grained visual perception. She will use computational modeling and memory experiments to investigate how the medial temporal lobe affects both memory and visual perception.
Researchers at Dartmouth College used fMRI to explore neural mechanisms behind filling in missing details of sensory information. The study found that intermediate object features are reconstructed in neural responses at early stages of cortical processing.
A study published in Biology Letters found that the eye views of ponies and other mammals are surprisingly similar to those of humans. Researchers used touchscreens to test visual perception in three ponies, comparing their results with studies on dolphins and chimps.
Researchers found that people with CFS are more vulnerable to pattern-related visual stress, a condition that causes discomfort and exhaustion when viewing repetitive striped patterns. This discovery may help in diagnosing the illness, which is difficult due to its similar symptoms to other conditions.
Research found that prenatal exposure to marijuana improves a child's ability to track moving objects, while alcohol has a negative effect on visual processing. The study suggests that health professionals can counteract the negative effects of drug use in pregnancy.
A functional magnetic resonance imaging (fMRI) study found that The Dress activates frontal and parietal brain areas, depending on perception. Researchers identified differential brain activity in participants perceiving the dress as white-gold versus black-blue.
Researchers found that the visual cortex can make decisions on its own, switching between different interpretations of visual input. This discovery challenges previous assumptions about the role of the visual cortex in processing visual information.
Research suggests that feeling sadness can change how we perceive color, with participants who were induced to feel sad being less accurate in identifying colors on the blue-yellow axis than those who were led to feel amused or emotionally neutral.
A brief period of postnatal visual deprivation rewires the brain's visual processing areas, even after normal vision is restored. This crossmodal competition highlights the role of early experience in shaping brain function.
A new Dartmouth study reveals that the brain encodes conceptual information in a way that combines object category-specific information with non-specific visual features. The research provides valuable insights into the mind-brain relationship, offering a deeper understanding of how we perceive and organize visual stimuli.
A recent study published in Neuron reveals that the brain's visual cortex can differentiate between important and irrelevant images through practice. The researchers found that as mice learned to associate certain images with rewards, specific neurons in the brain became more responsive to those images.
Researchers developed an augmented reality display to improve audience understanding of electronic musicians' engagement during performances. The technology uses 3D virtual content and mixed-reality displays to enhance the audience experience.
Researchers Paul Dassonville and Scott A. Reed found that the brain relies on a shared representation of space to make perceptual judgments and guide behavior, contradicting the notion of separate pathways for perception and action. This study challenges long-held assumptions about how the brain processes visual information.
A machine vision approach has demonstrated 93% accuracy in spotting true Pollocks, verifying the authenticity of Jackson Pollock's drip paintings. The software, developed by Lior Shamir, analyzes numerical image descriptors and quantifies details at the pixel level to reveal specific features and textures unique to Pollock's style.
Research by University of Kent's Professor Samuele Marcora found that athletes performing better when exposed to subliminal visual cues, such as action-related words and happy faces. This study confirms the perception of effort can be altered during exercise, leading to improved endurance capacity.
UC Berkeley researchers have discovered how our brains merge faces for stability and continuity. By identifying a 'Continuity Field' in facial recognition, they explain why we can't tell the difference between an actor's face and their stunt double's.
A study using morphed images of celebrities found that individual neurons react to subjective perception rather than visual stimuli. This suggests that neurons play a key role in the formation of memory by encoding our thoughts and images.
Researchers at University of California, Berkeley and University of Denver discovered that we rely on a specialized visual process known as 'ensemble coding' to perceive where a crowd is looking. This enables us to tell where a group of people is looking even after just a fraction of a second.
Research at Granada finds that alcohol consumption markedly impairs night-vision and deteriorates the optical quality of images seen. The study concludes that ethanol from alcoholic drinks disturbs the tear-film, facilitating evaporation of the aqueous part, which in turn degrades image quality.
A study by US researchers resolves a long-standing debate on package size perception, revealing that presentation context plays a significant role in estimating volume. When packages are displayed in groups of nine or more, simple-shaped packages appear larger than complex ones, but the reverse occurs when presented with fewer packages.
New research from the Monell Chemical Senses Center reveals that pleasant odors enhance women's facial attractiveness, while odor pleasantness has a mixed effect on age perception. The study found that visual age cues influence judgments of facial age, and unpleasant odors weaken this effect.
Scientists found that smelling certain steroids affects people's perception of movement as masculine or feminine, depending on their biological sex and sexual orientation. The study reveals a sexually dimorphic response to pheromones in both heterosexual and homosexual individuals.
Scientists found a 'continuity field' that smooths out object features, allowing us to perceive stability in the real world. This discovery explains why we often miss subtle changes in movies and everyday life.
The study found that monkeys can localize stimuli they do not perceive, similar to humans, who can also locate and side-step objects in their peripheral vision. Monkeys performed tasks accurately when stimuli were unmasked, but still localized targets at masking levels for which they reported no target had been presented.