Articles tagged with Visual Perception
Researchers developed a virtual walking system that uses 360° videos and scene-congruent foot vibrations to improve sensations of walking and perception of ground materials. The system was found to enhance walking-related sensations and telepresence, particularly in indoor corridors and snowy ground scenes.
Carlos Ponce is studying the parts of the visual system that analyze shapes, using macaque monkeys as a model. He combines computational models with electrophysiology experiments to understand how neurons process visual information.
A study published in eLife found that rats exhibit efficient coding processes for visual stimuli, similar to those observed in humans. This suggests a universal principle in vision, where the brain adapts to its environment by specializing in the recognition of informative signals, thereby conserving computational resources and energy.
Tiny fixational eye movements, beyond human awareness, are critical for fine details and everyday tasks. Microsaccades cause transient visual suppression during gaze shifts, but vision recovers rapidly at the center of gaze, leading to enhanced overall visibility.
Research published in JNeurosci found that children with dyslexia take longer to gather visual evidence, indicating altered motion processing and decision-making. This slowdown corresponds to differences in brain activity, particularly in centro-parietal regions involved in decision making.
Researchers uncover how sensory inputs and cognitive processes interact in the brain to create our perception of the world. The study explores the neural basis of perceptual phenomena, shedding light on disorders like ADHD, autism, and Alzheimer's disease.
A new study reveals that non-mammalian vertebrates may have an efficient way of deciphering between color and greyscale information. Zebrafish were found to use four types of cone-photoreceptors, which respond to different wavelengths, to distinguish color in a simpler manner than humans.
New research in zebrafish reveals the genetic mechanisms behind blue and green color vision loss in human ancestors. By studying gene editing tools and genome sequencing, experts understand how genes are regulated to detect different light wavelengths.
A team of researchers has found a 390-million-year-old hyper-facet eye system in trilobites that is unique to the animal kingdom. The discovery suggests that this ancient eye may have been an adaptation for life in low light conditions, and could provide insights into the evolution of visual systems.
Researchers at the University of Birmingham discovered that humans process written words rapidly, using pre-processing judgments within 100ms, and that this activity is linked to the complexity of the word. This study has significant implications for diagnosing and training individuals with dyslexia where pre-processing is impaired.
Researchers found that batters keep their eye on the ball but move their head to direct their gaze. The study suggests that this movement may help reduce visual calculations needed for accurate bat placement. Further investigation is needed to determine if eye-gaze-based training can improve batting performance.
Researchers found that mice can make fine visual discriminations between slightly different lines, suggesting a more complex decision-making process than previously thought. The study's findings highlight the importance of considering non-perceptual biases in understanding animal behavior and decision-making strategies.
A study published in Frontiers in Human Neuroscience found that brain activity associated with aesthetically appealing natural landscapes is not limited to the reward system, but also involves early visual areas. This suggests an early form of beauty perception that can be triggered by surprise and unexpected stimuli
Researchers found that jumping spiders can recognize biological patterns of movement, similar to vertebrates, using point-light displays. This skill allows them to focus on potential prey or predators while ignoring inanimate objects.
The study reveals that feedback to the primary visual cortex (V1) is necessary for segregating figures from the background, a crucial function of our vision. Disrupting this feedback renders objects invisible, highlighting its importance in figure-ground perception.
A new class of illusion, Scintillating Starburst, illustrates how the brain connects dots to create a subjective reality. Researchers found that contrast, line width, and number of vertices contribute to stronger and more vivid rays.
Infants younger than 7 months can perceive faces even when they are followed by a mask image, but this ability disappears in older infants. The study found that visual backward masking occurs due to interference with feedback processing, which develops in the second half of the first year of life.
A Perspective counters the DOJ's claim that forensic analysis of visual patterns is not metrology by highlighting biological sensory systems' ability to quantify patterns. This clarifies processes underlying human sensation and perception, potentially improving forensic accuracy.
Researchers at McGill University found that brain signals constantly adapt to synchronize visual and auditory inputs, using temporal recalibration to adjust our sense of time. This dynamic process enables us to perceive sounds and images as simultaneous, despite the different physical velocities and neural processing speeds.
A University of Granada study found that smoking cannabis significantly worsens visual acuity, contrast sensitivity, and glare sensitivity. Notably, over 90% of users believe the drug has no effect on their vision, highlighting a need for awareness-raising campaigns to inform users about the risks.
Researchers found that monkeys exhibit same patterns as humans in learning from consciously experienced and subliminally presented visual cues. This suggests that monkeys possess two levels of processing, one of which is conscious.
Researchers at the University of Helsinki found that depression alters the way the brain processes visual information, with depressed individuals perceiving contrast as stronger. The study used two visual tests to compare brain function in patients with depression to those without.
A recent study found that biases arise from unconscious tendencies towards certain decisions, affecting wellbeing. The research used mathematical models and neural recordings in primates to understand how biases are formed, revealing two types of bias: slow and fast, which can be difficult to eradicate.
A study involving two participants with sensory impairments reveals that physical embodiment can occur without the sense of touch. Kim and Ian, who cannot feel touch, use visual information to develop a sense of their bodies. Their unconscious body representations differ from those of control subjects.
Researchers discovered that transparent materials are perceived as flatter than actual thickness, contrary to metallic or glossy surfaces. The study used a computational model to predict image cues contributing to judgment errors and identified regional variations in local luminance contrast as the key factor.
Researchers developed an augmented reality (AR) visor system that manipulates light distribution to alter food appearance. This technique altered perceptions of moistness, wateriness, and deliciousness in people consuming the food, with the most notable effects on cake and ketchup.
Researchers found that listeners in Gainesville perceived increased accentedness with a South Asian face, whereas Montreal listeners did not exhibit the same effect. Exposure to linguistic diversity may impact accentedness judgments.
A new study demonstrates a high-definition brain prosthesis that can recreate complex shapes and letters in the minds of macaque monkeys. The device, containing 1024 electrodes, successfully evokes phosphenes and allows animals to recognize patterns.
Researchers at Salk Institute discover patterns of neural signals that facilitate perception of faint objects. The brain's ability to recognize targets is directly related to when and where traveling brain waves occur in the visual system.
Research from Binghamton University found that the human perceptual system rapidly adjusts to changes in visual experience, including playing video games. The study shows that people can adapt quickly to changes in their environment, with some arguing that this adaptation is helpful in a digital world.
A new study from JNeurosci found that time-sensitive neurons in the supramarginal gyrus fatigue and distort our subjective experience of time. When repeatedly exposed to a fixed duration stimulus, these neurons wear out, leading to skewed perceptions of time.
Consumer-created social media visuals are reflective of consumer brand perceptions, according to researchers who developed a new model called BrandImageNet. This model maps images to perceptual attributes of a brand, allowing firms to automatically monitor consumers' brand perceptions and evaluate their positioning strategies.
A new study finds that people with face blindness use different memory processes for face recognition, relying on familiarity rather than recollection. The research suggests that successful facial recognition requires more than a vague familiarity with a face.
Researchers discovered that neural representations of smell in the cortex reflect chemical similarities between odors, allowing for categorization. The findings also suggest that sensory experiences can rewire these representations.
Research on brain-damaged patients with distorted perception reveals neural processing can occur despite lack of awareness. The study's findings have significant implications for theories of human visual awareness and suggest a reevaluation of the relationship between complex cognitive processing and awareness.
A study from Toyohashi University of Technology reveals that visual perception elicits emotions across all attentional states, while auditory perception only elicits emotions when attention is paid to sounds. This suggests distinct relationships between attentional states and emotional responses to visual and auditory stimuli.
Researchers found that people are often unaware of color removal from their visual periphery in virtual reality, suggesting limitations to human color awareness. The studies used 178 participants and revealed that peripheral color detection is less accurate than previously believed.
Research from Anglia Ruskin University's Vision and Eye Research Institute found that people with severe vision loss can less accurately judge the distance of nearby sounds. This impairment may put them at risk of injury in real-life situations.
A University of Minnesota Medical School researcher used functional MRI to demonstrate differences in visual motion perception among individuals with autism spectrum disorder. Brain responses show less neural suppression in the visual cortex, which may explain symptoms like sensory hypersensitivity.
Researchers found that prediction errors can be accessed during final processing stages of perception, contradicting previous theories. This means the brain simultaneously keeps track of past, current, and future image contents, allowing for stability and flexibility in rapid image sequences.
Researchers at Goethe University Frankfurt found that mistakes in short-term memory, such as misperceiving the motion direction of dots, contribute to our ability to recognize and integrate visual information over time. This 'blurring' of perception helps us perceive a stable environment despite constant changes.
Researchers at NIH defined a critical window for visual event detection in mice, revealing the superior colliculus plays a crucial role. Inhibiting this region impaired event perception and made mice more susceptible to distracting visuals.
A study by Kiel University researchers has identified a consistent counterclockwise deviation in the orientation of newly built Early Neolithic houses in Central and Eastern Europe. The finding is attributed to the phenomenon known as pseudo-neglect, where humans tend to prefer their left visual field.
A Dartmouth study finds that conscious visual perception of location occurs in the frontal lobes, contradicting previous assumptions about its location. The research used fMRI data and multivariate pattern analysis to investigate where conscious perception emerges and how the brain codes this.
A team of neuroscientists discovered that the brain combines visual features through high-frequency oscillations to achieve a unified percept. The researchers measured nerve cell activity in rhesus monkeys while performing a visual perception task, finding that faster responses occurred with stronger high-frequency oscillations.
Research suggests that infants under 6 months can detect the motion of large objects more accurately than small ones, whereas adults struggle with this task. This phenomenon is attributed to surround suppression, which weakens in older children and adults, allowing them to see smaller motions better.
Researchers at Emory University found that the medial axis of an object, or its skeletal geometry, is a crucial visual tool for object recognition. The study suggests that this inner mechanism may play a more important role than previously thought in recognizing objects quickly.
Researchers isolated melanopsin cell functions and demonstrated their importance in perceiving visual environment. The study showed that melanopsin plays a crucial role in detecting light intensity, contributing to a new understanding of the biology of the eye.
Researchers developed a new optogenetic technique to control brain activity in mice, recreating natural perception and guiding behavior. The method revealed new insights into neuronal dynamics and the neurobiology of mammalian behavior.
A new study led by UC Riverside psychologist Brent Hughes found that the tendency to recognize differences in own-race faces is greater than in other-race faces, a phenomenon known as the 'other-race effect.' This bias occurs even at early stages of sensory perception and can affect downstream beliefs and behaviors.
Volunteer participants who could control a smiley face's appearance perceived an afterimage as smaller, indicating shorter perceptual distance. This effect is automatic and nearly independent of knowledge, suggesting social cognition plays a crucial role in low-level perceptual processing.
A study found that children's brains can compensate for missing regions of the visual cortex after epilepsy surgery, allowing them to maintain full visual perception. This brain plasticity suggests that early surgical treatment for children with epilepsy may enable this type of remapping.
A study led by York University researchers found that children's brains can compensate for lost regions of the visual cortex after surgery, retaining normal visual perception. The brain's plasticity allows it to re-wire itself in a way not seen in adults, enabling children to read and recognize faces with minimal impairment.
Researchers created a database of 21 textures associated with different emotions, revealing soft surfaces tend to evoke pleasant feelings while rough ones elicit unpleasant sensations. The study also found people with high alexithymia levels experience more intense negative emotions when interacting with certain textures.
Researchers used optical illusions to study human vision and found rhythmic brain activity patterns that facilitate visual feature integration. The findings suggest that periodic waves of brain activity are necessary for both perception and attention, contradicting the classical view of unified perception relying on a single brain region.
Researchers at the University of Texas at Austin developed an AI agent that can gather visual information and reconstruct a full 360-degree image of its surroundings. The agent uses deep learning to choose the most informative shots, similar to how humans would take pictures in different directions based on prior experience.
A new University study highlights the high incidence and prevalence of visual problems in acute stroke survivors, with 48% of all stroke admissions and 60% of survivors experiencing new onset visual conditions. The study found that three quarters of patients had visual problems, including impaired central vision, eye movement abnormali...
A new study by the University of Plymouth found that people spontaneously form mental images of how the world looks to others, allowing them to virtually see through another person's eyes and make judgments. This ability helps us empathize with others, predict their behavior, and interact with them effectively in everyday activities.
Archae fish, trained in a computer experiment, exhibit same visual processing skills as humans when identifying target features such as color, size, orientation and motion. This shared approach is believed to be essential for survival and could provide insights into other species' brains.
Researchers found that body-camera footage led to lower intentionality ratings compared to dashboard footage in both real and staged incidents. The study suggests that body-camera footage could impact judicial decisions.