Articles tagged with Visual Perception
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A blind patient partially recovered natural vision through electrical stimulation of the visual cortex, independent of the implant. The recovery was sustained over time and remained even after the device was removed, suggesting individual factors may have contributed to this outcome.
The lateral geniculate nucleus (LGN) plays a bigger role in visual processing than previously thought, changing and modulating signals as it transfers visual information. LGN cells respond to specific areas of vision, are color-tuned, and follow a layered structure, similar to animal studies.
Researchers analyzed clips from Hollywood films to identify brain structures linking visual and tactile experiences. They discovered eight remarkably similar maps in the visual cortex, mirroring the body's organization in the somatosensory cortex.
A new study reveals that fruit flies have retinal waves of calcium activity during development, shaping their growing eyes and creating a precisely ordered architecture. These waves refine connections in the visual brain while also playing a key role in building the physical architecture of the eye.
When handing over packages to delivery robots, humans tend to feel more comfortable when the robot approaches closely, slowing down walking speed and hesitating briefly. This study suggests that robots should be designed with appropriate approach distances and motion patterns to achieve comfortable human-robot collaboration.
A new study by SISSA researchers found that auditory signals can alter the way rats perceive visual stimuli, compressing their perceptual space. The research used behavioural experiments and computational modelling to demonstrate an inhibitory influence of auditory cues on visual perception.
A biologically inspired computer model combines spatially and temporally congruent audiovisual information like humans do, overcoming previous limitations. The model reproduces results from 69 classic experiments across species and outperforms dominant models.
Researchers at the University of Cambridge found that the human eye has a resolution limit, above which screens provide more information than can be detected. For an average UK living room, a 44-inch 4K or 8K TV does not offer additional benefits over a lower resolution Quad HD TV.
Researchers identified IC-encoder neurons that drive pattern completion and recurrent neural activity in the brain. The findings have implications for understanding neuropsychiatric disorders like schizophrenia.
A new study from McGill University provides insight into how the brain distinguishes objects from background when finding direction. The research found that specific brain areas fired when mice looked at objects, increasing their perception of where they were relative to the object.
Scientists have discovered key circuit changes that lead to the maturation of reliable brain activity patterns in response to visual experience. The findings suggest that the brain develops a modular organization, with patches of neurons activating together in response to specific features, allowing for efficient learning and adaptation.
Researchers found that distinct neural representations of color are conserved across people's brains, enabling scientists to predict the color and brightness of observed stimuli using brain activity comparisons. This study provides new insights into the universal aspects of human color perception.
Researchers have established apple snails as a system to study eye regeneration, which may hold the key for restoring vision due to damage and disease. The team discovered that the snail eye is anatomically similar to humans and can regrow itself, with genes such as pax6 playing a crucial role in development.
A new study reveals that the brain has distinct regions for processing 'things', such as rigid objects, versus 'stuff', like liquids or sand. These findings may help the brain plan interactions with different materials, similar to artificial physics engines used in video games.
A study published in Neuron reveals the neural circuit underlying individual differences in visual escape habituation, a key component of emotional responses. The research identifies distinct brain pathways involved in two types of defensive behaviors, providing new insights into arousal modulation and stress adaptation.
Researchers have created contact lenses that convert infrared light into visible light, allowing users to perceive multiple infrared wavelengths. In experiments, mice and human participants showed enhanced infrared vision when their eyes were closed, with improved color perception for color blind individuals.
A study found that connections between visual and language processing regions in the brain influence object knowledge. Stroke patients' brains showed stronger connections meant better performance on color-identification tasks.
A team of researchers investigated the impact of Kyoto's Murin-an garden on viewers' relaxation. They found a correlation between rapid gaze shifts and reduced stress levels. The design features of the well-crafted Japanese garden led to frequent, rapid horizontal shifts in gaze, which induced a calming effect.
Research by MIT neuroscientists reveals that the brain separates its processing of spatial information to maintain cognitive advantage, yet seamlessly blends it with other features. The study also explores how the brain 'hands off' visual information between hemispheres.
Researchers have used AI and brain activity to study the Other-Race-Effect (ORE), a phenomenon where people recognize faces of their own race more easily than others. They found that faces from other races are processed more generally and with less detail, leading to less accurate recognition.
Researchers at LMU Munich have shown that the brain processes natural visual stimuli with dedicated oscillatory bursts in the visual neocortex. The study, published in Neuron, demonstrates how distinct image properties elicit distinct oscillations in a specific visual circuit.
Researchers from ICTER have determined the 3D structure of RBP3, a key molecule in the visual cycle, shedding light on its role in retinal diseases such as diabetic retinopathy. The study reveals conformational changes upon binding to ligands, providing new insights into its functional mechanisms.
Researchers discovered that aging causes inflammation, oxidative stress, and gene disruption in the retinal pigment epithelium, a vital layer of cells in the eye. This study provides a clearer understanding of why aging leads to eye disease and introduces a reliable laboratory model for testing new therapies.
Researchers found that medical imaging experts can solve common optical illusions, including judging the size of objects. Training to improve visual perception can also make experts less susceptible to these illusions. This study has implications for training medical image analysts.
A study analyzing Klimt's The Kiss reveals that the painting's red discs represent vital biological functions and psychological intensity. The research also uncovers historical links between the artist and medical science, suggesting deliberate incorporation of menstrual blood as a central motif.
Researchers at Ruhr-University Bochum discovered that the rubber hand illusion reduces perceived pain intensity when a heat stimulus is applied to one hand while simultaneously illuminating a rubber hand. This phenomenon, known as visual analgesia, could potentially be used in treating complex regional pain syndrome.
A new analysis of 105-year-old data found that while dazzle camouflage had some effect, the 'horizon effect' had a much greater influence on confusing enemy ships. The study, led by Aston University researchers, showed that when people looked at a ship in the distance, they significantly underestimated its direction of travel.
Researchers at Durham University found that children as young as seven years old adjust their perception of body weight after seeing pictures of low or high weight bodies. The study suggests that media influences can impact both children's and adults' body perceptions, shaping their ideas about what constitutes a healthy weight.
Researchers have discovered column-like structures in the visual cortex of mice, where neurons processing stimuli from the same eye form clusters. This finding sheds light on the structural organization of the brain and may help solve the mystery of cortical columns' function.
A new 15-minute screening tool can identify visual perception problems in stroke survivors, affecting their quality of life and independence. The Oxford Visual Perception Screen (OxVPS) assesses object and face recognition, reading, eye-hand coordination, and neglect, providing an easy-to-interpret guide for healthcare professionals.
The study investigates how the brain perceives pain and finds that the Surprise Hypothesis better explains the mechanism. Participants in the experiment reported stronger pain when they were surprised by painful stimuli, confirming the importance of reducing the gap between expected and unexpected events.
Researchers at Sainsbury Wellcome Centre develop novel experimental setup called Translocator, isolating fundamental elements of locomotion and motion-source separation. The team finds that individual cells in primary visual cortex use motor and vestibular signals to determine visual flow origin.
Researchers developed a new technology to track the eye movements of free-swimming fish in 3D, without invasive methods. The method analyzes video recordings to reconstruct the fish's 3D body posture, eye position, and retinal view, providing insights into their collective behavior.
A study by Seoul National University researchers found that men and women prioritize different aspects of visibility in urban spaces, with men focusing on clear views and women concerned with unexpected threats. The research suggests designing piloti parking spaces with transparent fences and minimizing blind spots can reduce crime anx...
Researchers at ISTA identify a brain region in mice that predicts and minimizes visual distortion during movement, allowing for sharper mental images. The 'ventral lateral geniculate nucleus' (vLGN) integrates motor and sensory signals to compute a comprehensive corrective signal, enabling more efficient visual processing.
A POSTECH research team developed a novel multidimensional sampling theory to overcome limitations of flat optics. Their study identifies constraints of conventional sampling theories and presents an innovative anti-aliasing strategy, significantly enhancing optical performance.
Researchers found that emphasizing high-spatial-frequency components of skin lightness decreases the perception of moisture, closely resembling physiological phenomena associated with skin dryness. The study aimed to investigate visual cues for skin moisture and dryness, shedding new light on this crucial aspect of human health.
Two studies reveal complex and flexible visual information processing in the brain's cortex and thalamus. Researchers identified pathways that selectively channel visual signals to targeted areas or broadcast information broadly across multiple regions.
A new shape-changing device called Shape has been developed to help people with visual impairment perform a location task as effectively as sighted people. The study found that participants with visual impairment located targets significantly faster using Shape than with vibration technology, and preferred it over current methods.
Researchers found that autistic children prioritize faces in different ways, particularly when first seeing them, using an exploratory pattern characterized by larger face regions of interest. This may be associated with autism-related symptomology and decreased visual sensitivity to face information.
Researchers propose a new working definition for CVI, a leading cause of blindness and visual impairment in children. The definition is based on five key elements and includes early detection, neuroplasticity, and functional deficits.
A study by the University of Münster's research team led by Prof Markus Lappe found that smooth eye movements cannot be performed for all types of visual motion, leading to a disruption of spatial perception. The researchers also discovered that the compensation mechanism for rapid eye movements is overridden when certain non-rigid mov...
Researchers at Tel Aviv University demonstrated that bats can navigate great distances in open areas with their eyes closed, using only echolocation. The study found that bats create an acoustic map of their environment, relying on distinct echoes to guide their flight paths.
Researchers found that participants with Parkinson's who performed rapid side-to-side eye movements showed reduced body sway and improved posture. In contrast, those with Parkinson's who made vertical saccadic eye movements experienced increased body instability.
The study found that brain responds rapidly to face-like features, even in ambiguous black-and-white stimuli. Face-likeness affects unconscious processing, and images with high degree of facial likeness are detected faster than those without.
Researchers at Yale University found that visual clutter affects how information flows in the brain, altering perception and cognition. The study used macaque monkeys to investigate the neural basis of perception and discovered subunits within larger visual areas doing their own computations.
A new article investigates whether auditory magic tricks can be created for a blind audience, finding that the brain processes visual and auditory information differently. This study underscores the importance of making magic more inclusive for people with blindness.
High-contrast patterns on humbug damselfish bodies serve dual purpose: camouflage when stationary and motion dazzle when moving. The fish adapt their behavior based on environment, using motion dazzle to confuse predators when feeding outside coral colonies.
Researchers have discovered differences in temporal dynamics of visual processing during brief fixation periods, which could improve understanding of visual information in dynamic environments. The study reveals that the visual system is better at localizing changes at the foveal level initially but improves peripheral detection as fix...
A team of researchers from the National Institute for Physiological Sciences in Japan found that partial occlusion of digital numerals can induce bistable interpretations of their semantic meanings. Long-time visual exposure to normal numerals biases perception, favoring a specific number interpretation.
Researchers discovered that urban and desert fruit flies use distinct visual navigation strategies to maintain balance and orient towards interesting objects. The study suggests that the visual environment plays a crucial role in shaping these navigation tactics, with implications for human vision and autonomous vehicle development.
Neuroscientists have discovered a global process across the brain that coordinates sensory input with motor action through learning. In trained mice, neurons link sensory evidence to action initiation, integrating information across multiple brain regions.
A recent study demonstrates how real-time haptic feedback can enhance interoceptive awareness, improving mental and physical health. Participants showed improved accuracy in heart rate discrimination tasks after receiving haptic feedback, suggesting a deeper connection between the mind and body.
A competition encourages magicians to craft mesmerizing sound-based tricks that evoke wonder and amazement without relying on visual cues. The initiative aims to make magic more inclusive for individuals with visual impairments, allowing them to experience the art in a new way.
Researchers have found a new brain mechanism that detects prediction errors between expected and actual sensory inputs, boosting responses to unexpected information. This discovery could offer insights into the neural circuits underlying autism spectrum disorders (ASDs) and schizophrenia spectrum disorders (SSDs).
A study published in Neuron reveals that neurons are wired to connect seemingly unrelated concepts, enhancing the brain's ability to predict what we see based on past experiences. Visual experience influences the organisation of feedback projections, which store information about the world.
A new Reichman University study demonstrates how external representation of physiological signals can improve internal balance. The researchers created an immersive multisensory environment that mirrors the user's breathing pattern, leading to significant improvements in interoceptive sensibility and flow among users.
The SAM model demonstrates excellent generalization on common scenes, but requires strong prior knowledge for complex scenarios and performs poorly on low-contrast applications. It also struggles with professional data, particularly in medical and industrial settings.
A recent study revealed that the brain uses a similar neural mechanism to store faces of familiar individuals as it does to remember the value of objects. The striatum tail plays a critical role in this process, responding strongly to familiar faces and weakly to unfamiliar ones.
Researchers from Drexel University's College of Nursing and Health Professions found that traumatic life events do impact the perception of trauma-related imagery. Viewers' personal history of adversity and trauma was associated with stronger reactions to images depicting injury/trauma.