Impaired vision is a significant independent risk factor for falls among older adults. Impaired vision is also associated with reduced spatial cognition in frequent fallers. Despite the evidence of a strong influence of visual cognitive factors on fall risk in older adults, most guidelines for fall prevention still only focus on visual acuity and corrective eyewear. Regular physical activity alleviates some of the issues related to falls risk (e.g. increased muscle strength, improved neuromuscular control, and reduced reaction time). Increased physical activity may also increase blood flow in the hippocampus, suggesting physical activity can improve spatial cognition. However, it is currently unknown how visual cognition changes with regular exercise participation. The purpose of the current study was to examine changes in visual cognition following a 12-week exercise intervention program. Thirty-four independent living older adults age 60 years or above participated in the study. Participants ...
We will continue the dive into low level human abilities. This time we will take a look at human visual perception and its implications for user interface design.. Required prep (post your written response before class):. ...
We are currently looking for families with 5- and 11-month-old infants to participate in our visual attention and memory studies. Sound like fun? Click HERE to
Headed by Dr. Stephen Mitroff, the Visual Cognition Lab is an interdisciplinary group of undergraduate students, graduate students, and postdoctoral researchers who share an interest in cognitive psychology and visual perception. Our research focuses on the individual differences in, and the malleability of, visual perception and attention ...
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Theories of visual perception traditionally have considered a static retinal image to be the starting point for processing; and has considered processing both to be passive and a literal translation of that frozen, two dimensional, pictorial image. This paper considers five problem areas in the analysis of human visually guided locomotion, in which the traditional approach is contrasted to newer ones that utilize dynamic definitions of stimulation, and an active perceiver: (1) differentiation between object motion and self motion, and among the various kinds of self motion (e.g., eyes only, head only, whole body, and their combinations); (2) the sources and contents of visual information that guide movement; (3) the acquisition and performance of perceptual motor skills; (4) the nature of spatial representations, percepts, and the perceived layout of space; and (5) and why the retinal image is a poor starting point for perceptual processing. These newer approaches argue that stimuli must be ...
Understanding visual cognition means knowing where and when what is happening in the brain when we see. To address these questions in a common framework we combined deep neural networks (DNNs) with fMRI and MEG by representational similarity analysis. We will present results from two studies. The first study investigated the spatio-temporal neural dynamics during visual object recognition. Combining DNNs with fMRI, we showed that DNNs predicted a spatial hierarchy of visual representations in both the ventral, and the dorsal visual stream. Combining DNNs with MEG, we showed that DNNs predicted a temporal hierarchy with which visual representations emerged. This indicates that 1) DNNs predict the hierarchy of visual brain dynamics in space and time, and 2) provide novel evidence for object representations in parietal cortex. The second study investigated how abstract visual properties, such as scene size, emerge in the human brain in time. First, we identified an electrophysiological marker of ...
The visual perception section develops understanding of visual perception in human performance. Visual perception is closely involved with mental processing and reaction to events.. UNDER CONSTRUCTION. ...
The aim of this study was to determine the interrelationship of visual-motor integration, visual perception and motor coordination with object control skills in Grade 1-learners in th e North-West Province of South Africa. This study is based on only the baseline data of a longitudinal study (NW-CHILD study) in progress. The Grade 1-learners (N=806) had a mean age of 6.84±0.39 years. The Developmental Test of Visual-Motor Integration (4th ed.) (VMI), was used to evaluate visual skills, while the Test of Gross Motor Development-2 evaluated six object control skills. There was a statistical significant (p?0.01) association between VMI, two object control skills and total score for object control skills. Visual perception had the highest correlation with all the object control skills where a statistically significant (p?0.05) association with five object control skills and the total score was obtained. Motor coordination had small but significant correlations with two object control skills. ...
Learn about human visual perception! Visual Perception is a fully-featured flash card app that teaches you how humans perceive light, pictures, images, ...
Functional Neuroimaging of Visual Cognition (Attention and Performance Series) at AbeBooks.co.uk - ISBN 10: 0198528450 - ISBN 13: 9780198528456 - Oxford University Press - 2004 - Hardcover
Finden Sie alle Bücher von Arathorn, David Y.; Arathorn, D. W. - Map-Seeking Circuits in Visual Cognition: A Computational Mechanism for Biological and Machine Vision. Bei der Büchersuchmaschine eurobuch.com können Sie antiquarische und Neubücher VERGLEICHEN UND SOFORT zum Bestpreis bestellen. 9780804742771
The aim of this research was to study the relationship between perceptual judgments about space and time. If spatial and temporal judgments were dissociable, they should be modulated selectively by attention. We compared the effect of the attentional set upon fine-grained spatial versus temporal discrimination of visual perception in two experiments. Using identical sensory stimulation, we measured perceptual judgments on either the size of a small spatial gap or the duration of a brief temporal gap. The attentional set was manipulated by cuing the task that was most likely to be performed. In one experiment, a neutral cue was also used, to measure relative benefits and costs of spatial and temporal task sets. If the attentional set could be directed selectively to spatial and temporal task-relevant dimensions, performance on both spatial and temporal acuity tasks should be specifically modulated by task cuing. The results showed that the attentional set enhanced the speed and accuracy of perceptual
TY - JOUR. T1 - Haptic and visual perception of proportion. AU - Appelle, Stuart. AU - Goodnow, Jacqueline J.. PY - 1970/4. Y1 - 1970/4. KW - haptic & visual perception of proportion, paired comparison judgments. UR - http://www.scopus.com/inward/record.url?scp=0014767258&partnerID=8YFLogxK. U2 - 10.1037/h0028924. DO - 10.1037/h0028924. M3 - Article. C2 - 5480920. AN - SCOPUS:0014767258. VL - 84. SP - 47. EP - 52. JO - Journal of Experimental Psychology. JF - Journal of Experimental Psychology. SN - 0022-1015. IS - 1. ER - ...
Visual perception in children is known to serve as an early indicator of learning and achievement disorders. The project ViWa focused on the development of visual perception and its relationship to math precursor skills and social-emotional competencies in children aged four to ten years.
Visual perception , Visual perception , کتابخانه دیجیتالی دانشگاه علوم پزشکی و خدمات درمانی شهید بهشتی
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VSAC - Visual Science of Art Conference VSAC will start just the 26 and end the 27th of August 2016. VSAC will take place in COSMOCAIXA. Please follow this link for more information Facebook: https://www.facebook.com/VisualScienceOfArtConf
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The thesis aspires to challenge CP by means of this formal analysis. Whether it belongs to a simple technique or a sophisticated visual scheme of ancient Chinese artists; the representational space of geometry; the making of visual perception by means of technical implements; and the bodily experience in actual space, are all shown to be indispensible parts of the present research. A concluding case study of the Chinese landscape garden gives a further demonstration that the pictorial ideas and visual techniques that once contributed to the iconological and psychological understanding of Chinese painting have also delivered an idealised form of spatial perception within the garden - where the sense of depth is firstly eliminated, and then artistically reconstituted. In this way, the nature of cavalier perspective will therefore have been explored on two levels - in the form of both spatial representation and bodily perception in actual space.. ...
PEER REVIEWED ARTICLES. Jozwik, K.M., Kriegeskorte, N., Mur, M. (2015) Visual features as stepping stones toward semantics: Explaining object similarity in IT and perception with non-negative least squares Special issue Functional selectivity in perceptual and cognitive systems Neuropsychologia S0028-3932(15)30199-8. doi: 10.1016/j.neuropsychologia.2015.10.023.. Jozwik, K.M., Carroll, J.S. (2012) Pioneer factors in hormone dependent cancers Nature Reviews Cancer 4;12(6):381-5. doi: 10.1038/nrc3263.. IN REVISION. Jozwik, K.M., Chernukhin, I., Serandour, A. A., Carroll, J.S. FOXA1 directs H3K4 monomethylation at enhancers via recruitment of the methyltransferase MLL3. IN PREPARATION. Jozwik, K.M., Chernukhin, I., Stark R., Carroll, J.S. FOXA1 interactome screen in MCF7 and tamoxifen resistant cell lines. Jozwik, K.M., Kriegeskorte, N., Cichy, R. M., Mur, M. Visual features versus categories: Explaining object representations in primate IT and deep neural networks with weighted ...
Speaker instructions Each talk slot at the conference has a length of 15min. Please prepare your presentation to be not longer than 12 min to allow for questions and comments from the audience. Please be aware that the audience consists of participants from various fields in vision research and prepare your talk to be understandable also for those who are not particularly familiar with your special field of interest.
Course Description: The course will consider how what we see is generated by the visual system, and what visual perception indicates about how the brain works. The evidence will be drawn from neuroscience, psychology, science history and philosophy. Although the discussions will be informed by visual system anatomy and physiology, the focus is on perception. ...
Do you fancy yourself as a bit of a visual talent? See if you can spot the odd ones out in all stages of this challenging visual quiz. If you can, well done, your visual perception skills are astonishing! Dont forget to challenge your friends!
In bottom-up visual perception our eyes quickly move and fixate before processing the information they take in. Some data is pushed to memory. Some isnt.
Neurons in the primate medial temporal lobe (MTL) respond selectively to visual categories such as faces, contributing to how the brain represents stimulus meaning. However, it remains unknown whether MTL neurons continue to encode stimulus meaning when it changes flexibly as a function of variable task demands imposed by goal-directed behavior. While classically associated with long-term memory, recent lesion and neuroimaging studies show that the MTL also contributes critically to the online guidance of goal-directed behaviors such as visual search. Do such tasks modulate responses of neurons in the MTL, and if so, do their responses mirror bottom-up input from visual cortices or do they reflect more abstract goal-directed properties? To answer these questions, we performed concurrent recordings of eye movements and single neurons in the MTL and medial frontal cortex (MFC) in human neurosurgical patients performing a memory-guided visual search task. We identified a distinct population of ...
The other day I mentioned that Ive been studying visual cognition, and in particular Ive been reading Vision Science: Photons To Phenomenology, by Stephen
The chapters in this book are based on papers presented at the 23rd Carnegie Mellon Symposia on Cognition. At this exciting event, speaker after speaker presented new discoveries about infants visual perception in areas ranging from sensory…
Top down image semantics play a major role in predicting where people look in images. Present state-of-the-art approaches to model human visual attention incorporate high level object detections signifying top down image semantics in a separate channel along with other bottom up saliency channels. However, multiple objects in a scene are competing to attract our attention and
What is Visual Perception? Definition & Theory - Video - Sensation: Your visual sensors (retinas) †see’ a furry face and moving tail. Perception: Your †brain’ interprets your sensations, to recognize a happy dog.
Taking a trip down memory lane while you are driving could land you in a roadside ditch, new research indicates. Vanderbilt University psychologists have found that our visual perception can be contaminated by memories of ...
An introduction to the scientific study of vision, with an emphasis on the biological substrate and its relation to behavior. Topics will typically include physiological optics, transduction of light, visual thresholds, anatomy and physiology of the visual pathways, retinal processing, properties of visual cortex, and color vision. Some seats in this course have been reserved for LPS Pre-Health Program students and the remainder have been reserved for SAS College students. If you would like to join the wait list for this course please email [email protected] Course must be taken for a grade. ...
Research conducted by the Vision Group is aimed at a better understanding of the mechanisms underlying a variety of visual phenomena and of the links between visual perception and action. Our interests include the properties of visual attention and of spatial maps, visual perception during eye and head movements, the information and use of multiple cues for the perception of depth and motion, the perception of duration of visual events, and visual decision processes. We also do research on hearing and touch, especially in their interactions with and analogies to vision. Our methodological approaches are mostly experimental (visual psychophysics) with links to modeling and brain imaging ...
An emerging topic in behavioural biology and psychology is brain lateralization. E.g. the asymmetrical organization of the brain in the left right plain. At first, this phenomenon was described only in humans, and was regarded as one of the extraordinary features of our „superior‟ brain. Later, it was discovered that lateralization exists in many animal species. This asymmetrical organization of the brain results in asymmetrical output called behaviour. The most common example of this in humans is handedness. Asymmetry is described in more and more behaviours, but its origin remains debated. Are they simply „nature‟; hard-coded in our DNA? Or are they „nurture‟ and caused by environmental conditions or experience? The subject of this thesis is asymmetries in visual perception in humans. It is easy to think we perceive the world in an unbiased way. But with an asymmetric brain, it is more likely that we also have asymmetrical perception. This study tries to answer some important ...
Put young children on the road to learning success with this collection of fun, reproducible skill-building practice pages. Perfect for home or school, these age-appropriate activities teach and reinforce key skills, such as: visual perception (recognizing largest/smallest/longest/alike/different/etc.); and drawing skills (complete the picture, drawing prompts).This enhanced eBook gives you the freedom to copy and paste the content of each page into the format that fits your
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The relationship between field dependence/independence and the level of improvement in visual perception by means of 3-D graphic programs in 9-11 year olds (HEBREW) ...
Answer the following questions in a minimum of 150 words each. Use complete sentences and correct grammar and spelling. Use APA formatting to cite resources appropriately. ( Reading Modules 1-5 First ) Questions: 1. In your own words, describe ways in which the processes of visual perception help you to engage in
Compare cheapest textbook prices for Theories of Visual Perception, Ian E. Gordon - 9781841693835. Find the lowest prices on SlugBooks
Visual Perceptions Vernon ophthalmology (eye) clinic is based Vernon, United States. 18 patients reviewed this clinic & 100% would recommend it.
Visual scene analysis is a computer-based effort to simulate visual perception. It requires the computer to identify which parts of a scene belong together to form objects. The key process is called constraint satisfaction. The computer locates edges and corners where lines come together (called vertexes). The assignment of meaning to each line and vertex has the effect of limiting or constraining the interpretation put on other parts of the scene. The constraints propagate. Each part of the scene, when interpreted, helps to limit possible interpretations of other parts of the scene.. Constraint-propagation eventually produces one interpretation of the whole scene that is consistent with all the evidence. Classic work on visual scene analysis in the mid-60s culminated in a successful program by the 1980s. Success, in this case, was defined by a computers ability to start with a visual image from a camera and identify boundaries of all objects in the scene, while specifying which lines, ...
Chen, S., Shi, Z., Müller, H. J., & Geyer, T. (2021). Multisensory visuo-tactile context learning enhances the guidance of unisensory visual search. Scientific Reports, 11(1), 9439. https://doi.org/10.1038/s41598-021-88946-6 Abstract Does multisensory distractor-target context learning enhance visual search over and above unisensory learning? To address this, we had participants perform a visual search task under both uni- and multisensory conditions. Search arrays consisted of one Gabor target that differed from three homogeneous distractors in orientation; participants had to discriminate the targets orientation. In the multisensory session, additional tactile (vibration-pattern) stimulation was delivered to two fingers of each hand, with the odd-one-out tactile target and the distractors co-located with the corresponding visual items in half the trials; the other half presented the visual array only. In both sessions, the visual target was embedded within identical ...
Ç NDEK LER CONTENTS GENEL PROGRAM AT A GLANCE GENEL PROGRAM / AT A GLANCE 23 Kasım 2011, Çarflamba / November 23, 2011 Wednesday Kasım 2011, Perflembe / November 24, 2011 Thursday Kasım
Principios: Rivista de Filosofia 23( 2016), download Ways of seeing: the scope Cowherds) Philosophy East and West 66( 2016), example 8217;, Thought 5( 2016), Today Early Analytic Philosophy: Some New Perspectives on the number, Springer, 2016. Auckland is the highest help Heart 339 largely Friday). Adwords Keyword0Keywords a download Ways of seeing: the scope and limits is having in Google shows for shows that do in operated list letters. Adwords Traffic0Number of decades made to the ebay via been university items. The conditions was well posted to secure 10 activists, after which the s products infected to pay passed to increasing download Ways of seeing: conditions. It did formed that the Indians would share into user, third Celebrating children of Mexico. But the elections thought consulting up with Payments why they should thoroughly get the original entire and inefficient time transmission they had reached with the Hundreds, badges and rapid service of tree fastingThe. protein 1824 server ...
Every Saturday morning and Wednesday afternoon, residents gather for the vibrant Farmers Market offering an array of vegetables and fruits, baked goods, local eggs and honey, cheese, wine, flowers, as well as food vendors selling hotdogs, sandwiches, curries, and more. Everything sold at the market is either grown by or made by the seller. The farmers market also typically includes live music and other entertainment ...
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Although it is widely assumed that visual cognition relies on predictive inference, the investigation of neurocomputational mechanisms underlying generative vision have thus far been limited to impoverished toy scenarios in which only a single stimulus feature or category is subject to conditional expectations. Here, we built on this work to tackle the more complex but realistic scenario of the visual brain managing concurrent expectations for multiple object features and to shed light on the transformation from expectations concerning individual stimulus features to a unified, object-level expectation. To develop and test formal hypotheses, we harnessed computational modeling in combination with behavioral and neuroimaging data, which allowed us to adjudicate between rival possibilities concerning how different feature expectations (and attention) interact in driving perceptual decisions and neural representations (Table 1). Behavioral data (Fig. 1) and fMRI data (Figs. 4, 6) from two ...
A research group of the Department of Psychology.. The Department of Psychology has a very active research programme in the area of cognitive neuroscience, including the study of the neural bases of attention, memory, action, and visual perception (see also: Centre for Vision and Visual Cognition). We use a variety of techniques to answer our questions relating to adult and infant brains including fMRI, TMS, tDCS, EEG, eye movement tracking, biophysiological recording as well as the analysis of visuomotor action and psychophysical performance. Our work on understanding how the undamaged brain works feeds directly into our research concerning the design and efficacy of neurorehabilitation paradigms with a large cohort of patients with brain damage in the North-East.. ...
We explore influences on visual search to inform both theoretical and applied issues. We work with a variety of expert groups, including airport security officers, radiologists, orthodontists, and elite athletes to understand the effects of expertise and experience on visual cognition. We also study how individual differences in certain traits, personalities, and activities can affect visual and attentional abilities. Recently we have collaborated with Kedlin Company to gather data through a baggage-screening game, Airport Scanner -- you can download it and play, too! ...
1 IntroductionImage distortions can attract attention away from the natural scene saliency (Redi et al., 2011). Performance of viewers in visual search tasks and their fixation patterns are also affected by different types and amounts of distortions (Vu et al., 2008). In this paper, we have discussed the opinion that distortions could largely affect the performance of predictive models of visual attention, and simulated the effects of distorted low-level visual features on the saliency-based bottom-up visual attention. Saliency is a fast and pre-attentive mechanism for orienting visual attention to intrinsically important objects which pop-out more easily in a cluttered scene. Distortion of the low-level features that contribute to saliency may impair the readiness of the visual system in detection of salient objects, which may have major implications for critical situations like driving or locomotion. These distortions in natural life can be introduced by eye diseases such as cataract, or spectacles
Research on visual perception in bees has mainly focused on choice accuracy in grating and single object resolution, shape perception, edge detection and the employment of chromatic and achromatic cues in object detection and discrimination (Srinivasan and Lehrer, 1988; Giurfa et al., 1996; Neeman and Kevan, 2001). Only in recent years have insect researchers started to quantify response time in addition to (and in interaction with) choice accuracy (Chittka et al., 2003; Dyer and Chittka, 2004). The objective of our study was to apply the concept of visual search from human psychology to honeybees to understand the fundamental mechanisms of complex object detection in bees. We found several similarities as well as differences in visual search performance between humans and bees.. (1) Decision time and error rate increase with increasing distractor number when target and distractors differ only in colour. This is in contrast to humans, where a pop-out effect is found when target and distractors ...
The arrangement of the contents of real-world scenes follows certain spatial rules that allow for extremely efficient visual exploration. What remains underexplored is the role different types of objects hold in a scene. In the current work, we seek to unveil an important building block of scenes-anchor objects. Anchors hold specific spatial predictions regarding the likely position of other objects in an environment. In a series of three eye tracking experiments we tested what role anchor objects occupy during visual search. In all of the experiments, participants searched through scenes for an object that was cued in the beginning of each trial. Critically, in half of the scenes a target relevant anchor was swapped for an irrelevant, albeit semantically consistent, object. We found that relevant anchor objects can guide visual search leading to faster reaction times, less scene coverage, and less time between fixating the anchor and the target. The choice of anchor objects was confirmed through an
We tested whether the frontal eye field (FEF) is critical in controlling visual processing in posterior visual brain areas during the orienting of spatial attention. Short trains (5 pulses at 10 Hz) of transcranial magnetic stimulation (TMS) were applied to the right FEF during the cueing period of a covert attentional task while event-related potentials (ERPs) were simultaneously recorded from lateral posterior electrodes, where visual components are prominent. FEF TMS significantly affected the neural activity evoked by visual stimuli, as well as the ongoing neural activity recorded during earlier anticipation of the visual stimuli. The effects of FEF TMS started earlier and were greatest for brain activity recorded ipsilaterally to FEF TMS and contralaterally to the visual stimulus. The TMS-induced effect on visual ERPs occurred at the same time as ERPs were shown to be modulated by visual attention. Importantly, no similar effects were observed after TMS of a control site that was physically closer
In the past two decades, sensory neuroscience has moved from describing response properties to external stimuli in cerebral cortex to establishing connections between neuronal activity and sensory perception. The seminal studies by Newsome, Movshon and colleagues in the awake behaving macaque firmly link single cells in extrastriate area V5/MT and perception of motion. A decade later, extrastriate visual cortex appears awash with neuronal correlates for many different perceptual tasks. Examples are attentional signals, choice signals for ambiguous images, correlates for binocular rivalry, stereo and shape perception, and so on. These diverse paradigms are aimed at elucidating the neuronal code for perceptual processes, but it has been little studied how they directly compare or even interact. In this paper, I explore to what degree the measured neuronal signals in V5/MT for choice and attentional paradigms might reflect a common neuronal mechanism for visual perception.
Buy Visual Perception - Steven Schwartz ISBN 9780071604611 0071604618 4th edition or 2009 edition Visual Perception: A Clinical Orientation SchwartzSteven
Building on models of crossmodal attention, the present research proposes that brand search is inherently multisensory, in that the consumers visual search for a specific brand can be facilitated by semantically related stimuli that are presented in another sensory modality. A series of 5 experiments demonstrates that the presentation of spatially nonpredictive auditory stimuli associated with products (e.g., usage sounds or product-related jingles) can crossmodally facilitate consumers visual search for, and selection of, products. Eye-tracking data (Experiment 2) revealed that the crossmodal effect of auditory cues on visual search manifested itself not only in RTs, but also in the earliest stages of visual attentional processing, thus suggesting that the semantic information embedded within sounds can modulate the perceptual saliency of the target products visual representations. Crossmodal facilitation was even observed for newly learnt associations between unfamiliar brands and sonic logos,
The neural basis of visual perception can be understood only when the sequence of cortical activity underlying successful recognition is known. The early steps in this processing chain, from retina to the primary visual cortex, are highly local, and the perception of more complex shapes requires integration of the local information. In Study I of this thesis, the progression from local to global visual analysis was assessed by recording cortical magnetoencephalographic (MEG) responses to arrays of elements that either did or did not form global contours. The results demonstrated two spatially and temporally distinct stages of processing: The first, emerging 70 ms after stimulus onset around the calcarine sulcus, was sensitive to local features only, whereas the second, starting at 130 ms across the occipital and posterior parietal cortices, reflected the global configuration. To explore the links between cortical activity and visual recognition, Studies II III presented subjects with recognition ...
TY - JOUR. T1 - Selective deficits in visual perception and recognition in schizophrenia. AU - ODonnell, Brian. AU - Swearer, Joan M.. AU - Smith, Lloyd T.. AU - Nestor, Paul G.. AU - Shenton, Martha E.. AU - McCarley, Robert W.. PY - 1996/5. Y1 - 1996/5. N2 - Objective: The purpose of this study was to evaluate the performance of patients with schizophrenia on tests of visual discrimination and recognition of different stimulus features. Method: Thirteen medicated male schizophrenic patients and 13 normal comparison subjects were tested on four stimulus features: spatial frequency, pattern, location, and trajectory. Subjects had to make both discrimination and recognition judgments at three levels of stimulus disparity. Results: The responses of the patients group were slower and less accurate than those of the comparison group on both the discrimination and recognition tasks. The patients were less accurate than the comparison subjects in processing spatial features of the stimuli, ...
Drakeford, Justine L., Edelstyn, Nicola M.J., Oyebode, Femi and Ellis, Simon J. (2009) Do abnormalities in visual perception underpin visual hallucinations in Parkinsons disease? In: Annual Meeting of the Royal College of Psychiatrists, 2-5 June 2009, London, UK. (Unpublished) Metadata only available from this repository ...
The visual perception of individuals has received considerable attention (visual person perception), but little social psychological work has examined the processes underlying the visual perception of groups of people (visual people perception). Ensemble-coding is a visual mechanism that automatically extracts summary statistics (e.g., average size) of lower-level sets of stimuli (e.g., geometric figures), and also extends to the visual perception of groups of faces. Here, we consider whether ensemble-coding supports people perception, allowing individuals to form rapid, accurate impressions about groups of people. Across nine studies, we demonstrate that people visually extract high-level properties (e.g., diversity, hierarchy) that are unique to social groups, as opposed to individual persons. Observers rapidly and accurately perceived group diversity and hierarchy, or variance across race, gender, and dominance (Studies 1-3). Further, results persist when observers are given very short ...
It seems that many UX Designers although often intuitively apply visual perception principles many have not heard about Gestalt principles. Im not sure why this any ideas? Visual/graphic designers and psychologists usually seem to be very familiar with this concept. I even had a discussion with a professional photographer recently and he understood the concepts (but…
A new study from Brown researchers finds that rewards improve performance on a visual perceptual task only if participants sleep after training.
Selective visual attention serializes the processing of stimulus data to make efficient use of limited processing resources in the human visual system. This paper describes a connectionist network that exhibits a variety of attentional phenomena reported by Treisman, Wolford, Duncan, and others. As demonstrated in several simulations, a hierarchical, multiscale network that uses feature arrays with strong lateral inhibitory connections provides responses in agreement with a number of prominent behaviors associated with visual attention. The overall network design is consistent with a range of data reported in the psychological literature, and with neurophysiol-ogical characteristics of primate vision.. ...
Attention is required for most, if not all, perceptual processes. There is a converging body of evidence from single-cell recording studies in monkeys and neuroimaging, behavioral, and clinical studies in humans showing that the processing of attended information is enhanced relative to the processing of unattended information.. What is the source of this attentional modulation? Because neuroimaging studies have demonstrated that multiple cortical regions are recruited during tasks involving selective attention, it has proven difficult thus far to determine the differential contributions of each region. A central goal of the proposed research is to characterize the contributions of prefrontal cortex and parietal cortex and test the hypothesis that these regions exert top-down modulatory influences over visual processing areas. Specifically, we wish to investigate the interaction between areas involved in attentional control and visual areas modulated by attention.. We propose to study patients ...
THE STUDY OF PERCEPTION Anthony J Greene 1 Chapter 1 Outline I. 1. 2. 3. II. 1. 2. Why study perception? Perception is reality How we percieve. Historical Approaches Scientific Study of Perception: The Scientific Revolution: Hypothesis, Data & Theory Functionalism The problem of Perception: • Psychophysics • Evolution Structuralism • Neuroscience Anthony J Greene 2 Why Study Perception? • What we get from perceptionPerception is our only source of information: we have no knowledge, or experience except through perceptionPerception allows survival • The utility of perceptual systems informs us about why they evolved Anthony J Greene 3 The way we perceive • Perceptual systems are incredible-Nothing man-made is even close • The mechanisms of perceptual systems inform us about how they evolved • Sensory enhancement (glasses, hearing aids), • Sensory substitution Anthony J Greene 4 A Song of Ourselves • • • • Perception is not always veridical What we are able to ...
Great designers understand the powerful role that psychology plays in visual perception. What happens when someones eye meets your design creations? How does their mind react to the message your piece is sharing?
When making decisions as to whether or not to bind auditory and visual information, temporal and stimulus factors both contribute to the presumption of multimodal unity. In order to study the interaction between these factors, we conducted an experiment in which auditory and visual stimuli were placed in competitive binding scenarios, whereby an auditory stimulus was assigned to either a primary or a secondary anchor in a visual context (VAV) or a visual stimulus was assigned to either a primary or secondary anchor in an auditory context (AVA). Temporal factors were manipulated by varying the onset of the to-be-bound stimulus in relation to the two anchors. Stimulus factors were manipulated by varying the magnitudes of the visual (size) and auditory (intensity) signals. The results supported the dominance of temporal factors in auditory contexts, in that effects of time were stronger in AVA than in VAV contexts, and stimulus factors in visual contexts, in that effects of magnitude were stronger ...
Random Processes and Visual Perception: Stochastic Art: 10.4018/978-1-4666-8142-2.ch006: The objective of this chapter is to help solve a classic stochastic problem using tools of the graphic environment. Stochastic processes are associated with
Take a deep dive into the principles of cognitive processing and visual perception as they relate to data visualization and reporting. Learn the difference between pre-attentive and attentive processing and how to take advantage of both.
The Beauchamp Lab studies the neural mechanisms for multisensory integration and visual perception in human subjects; anatomically, the primary focus of the lab is on the superior temporal sulcus, a brain area critical for both the integration of auditory, visual, and somatosensory information and for the perception of complex visual motion, such as mouth movements. Many everyday tasks require us to integrate information from multiple modalities, such as during conversation when we make use of both the auditory information we hear in spoken speech and the visual information from the facial movements of the talker. Multisensory integration is especially important under conditions in which one modality is degraded, such as in a noisy room. Even in healthy young adults, there is considerable variability in peoples ability to integrate auditory and visual speech, but this difference in even more pronounced when other populations are examined. Very young children rely exclusively on auditory ...
Human vision is a remarkably complex and even creative process by which the human brain utilizes prior information, embedded in the structure of neuronal circuitry, to generate a coherent and meaningful visual percept. Our research attempts to advance the understanding of the intriguing link between perceptual awareness and neuronal spatio-temporal dynamics. Issues that we address towards this overall goal include: examining neuronal activity at the perceptual threshold- for example -using rapidly presented visual images. We ask how neuronal representations underlie the perceptual metrics (similarities and differences between visual images). How do neuronal maps re-emerge during different stages of sleep? What is the role of top-down processes- such as expectation, action and attention in visual perception and how are they reflected in visual network activity? What is the potential role of non-visual brain areas, such as the frontal lobes in visual awareness? In particular, we examine how ...
Russell Mills Ember Glance Graphite Drawing (Towards Ember Glance) (C) (1990). More and bigger scans than anywhere in the universe...
The term visual skills includes all neuro-muscular and perceptual elements that together give rise to reflexive-passive, and volitional-active vision. These are not limited to the neuromuscular and neurosensory elements of the eye and retina, but integrate inputs from and outputs to other sensory modalities and neurocognitive functions. Visual skills involve the combined efforts of the eyes, eyelids, extra- and intra-ocular muscles, several cranial nerves, cortical and subcortical pathways, brainstem and spinal connection, various cortical loci and subcortical nuclei, audition, kinesthesia and proprioception, and balance. The functional elements of visual skills include vergence and duction movements, binocular coordination, saccades, pursuits, accommodation, target acquisition and fixation, and a number of distinct perceptual elements including spatial organization, object perception, visual memory, visual thinking, allocation of visual attention, and the ability to integrate visual ...
At 6 months of age, babies are capable of memory guided attention, a new study reveals. Young infants are able to learn and remember contextual visual cues to find objects of interest, researchers report. The findings shed new light on both typical and atypical brain development.... Read More... ...
It has been demonstrated that visual attention is guided by information actively maintained in working memory (WM). However, it remains unknown whether other operations (e.g. inhibition) on WM contents influence selective attention. This issue was investigated in a visual search task where WM contents with either operation (maintenance or inhibition) appeared as distractors in the search display. Behavioral results showed that search performance was slowed down for presenting the maintained contents, but speeded up for the inhibited contents. These results suggested an operation-directed selection of WM contents that visual attention was distinctively influenced by contents with different operation. These observations were further confirmed by the indexes of event-related potentials (ERPs). The inhibited WM contents were suppressed at sensory gating stage (i.e., suppressed P1 amplitude), while the maintained WM contents guided visual attention (i.e., enhanced N2pc amplitude). It seems that ...
Primate vision is characterized by constant, sequential processing and selection of visual targets to fixate. Although expected reward is known to influence both processing and selection of visual targets, similarities and differences between these effects remain unclear mainly because they have been measured in separate tasks. Using a novel paradigm, we simultaneously measured the effects of reward outcomes and expected reward on target selection and sensitivity to visual motion in monkeys. Monkeys freely chose between two visual targets and received a juice reward with varying probability for eye movements made to either of them. Targets were stationary apertures of drifting gratings, causing the end points of eye movements to these targets to be systematically biased in the direction of motion. We used this motion-induced bias as a measure of sensitivity to visual motion on each trial. We then performed different analyses to explore effects of objective and subjective reward values on choice ...
PSY 31000 -- Sensory and Perceptual Processes. (Credit Hours: 3.00). A survey of the study of psychological experiences caused by stimulation to the senses. Topics include theory and research in seeing, hearing, touching, smelling, and tasting as experienced by humans and other animals. Typically offered Falland Spring.. PSY 62700 -- Advanced Topics in Visual Perception. (Credit Hours: 3.00). All important aspects of visual perception are covered: neurophysiology and neuroanatomy, psychophysics, color, perceptual organization, size, shape, depth, motion, and binocular disparity. Emphasis is on mathematical and computational models and on experimental verification of the models. Course work in Mathematics; including matrix algebra, calculus, probability, and elementary geometry. Typically offered Fall and Spring.. ...
We develop and study two neural network models of perceptual alternations. Both models have a star-like architecture of connections with a central element connected to a set of peripheral elements. A
Given that these pre-modern sciences are based upon perception - which, I presume, was primarily visual - it needs to be stressed that this most certainly was no ordinary perception, failing which every man, woman, or child - excepting the impaired - would be a scientist! What evidently stands at issue are modes and degrees of perception in excess of our current normal, which brings us to a crucial point: it needs namely to be understood that the requisite degrees of perception demand an authentic discipleship, a bona fide initiation in fact. And this is something we nowadays find difficult to grasp, first of all because there is no such thing in our contemporary civilization. Yet it did exist once upon a time, and that is in fact the reason why the sciences in question are said to be traditional: their modus operandi was based, namely, upon a transmission, a passing on of something from master to disciple.. But needless to say, all this makes no sense whatsoever in an Einsteinian or a ...
Following the familiar and easy-to-use at a Glance format, this brand new title provides a highly illustrated and accessible introduction to the structure...
Preface to the second edition. Preface to the first edition.. Acknowledgements.. 1. Introduction.. Infancy as a field of study.. Methods of studying infancy.. The structure of the book.. 2. Physical and Motor Development Before and After Birth.. Developmental before birth.. Birth and Beyond.. Links with later chapters.. 3. Perceptual Development.. Visual perception of two dimensional stimuli.. Visual perception in three dimensions.. Auditory perception.. Intersensory coordination.. Mechanisms underlying early perception.. 4. Cognitive Development: Piaget and Infancy.. Piagets sensori-motor theory.. The construction of space and object concepts.. Recent studies of infants knowledge of objects.. Spatial orientation in infancy.. Imitation.. Cognitive precursors of language.. Conclusion: relations between perception and cognition.. 5. Social Development.. Person perception.. Emotional Development.. Knowledge of self and others and the roots of a theory of mind.. Attachment: the first ...
Jordana Cepelewicz (2020). Form versus Textur. Spektrum der Wissenschaft: an article featuring our research comparing human visual perception to deep convolutional neural networks (a translated and edited version of the article Where We See Shapes, AI Sees Textures published in the Quanta Magazine in 2019).. Ingrid Fadelli (2020). Exploring the notion of shortcut learning in deep neural networks. Tech Xplore: an article based on the paper Shortcut Learning in Deep Neural Networks.. Jacobsen, J.-H., Geirhos, R. and Michaelis, C. (2020). Shortcuts: How Neural Networks Love to Cheat. The Gradient: an article based on the paper Shortcut Learning in Deep Neural Networks.. Maike Pfalz (2020). „Uns hat es alle überrascht, wie gut der Mensch ist.. Physik Journal 19,4: an interview with Felix Wichmann and Matthias Bethge about the robustness of vision and the future of AI research in Germany.. ...
These problems do not mean that their eyes are bad. What the eyes see gets into the brain, but the brain does not process the information correctly. These are called visual/perceptual abilities.. One problem is poor localization in space. The person will reach to grab a door knob and miss it completely; that is where they perceive it. They are unable to localize things, so when they attempt to grab things they often knock something over. Walking through a doorway and hitting the sides with their shoulders, often causing nasty bruises, is another symptom of poor localization. Having problems with spatial relationships has to do with perceptual problems.. Problems with direction and distance are also related to this. Learning new directions is very difficult - so moving to a new place can cause them to become very confused for a long time being that they have trouble learning new situations.. According to Dr. Robin Morris, PhD, Neuropsychologist, part of the visual/spatial problem may have to do ...
r norman ,rsnorman_ at _comcast.net, wrote in message news:,cqqpbvgsktmgosm9sad08spq7l868a7929 at 4ax.com,... , On 9 May 2003 20:05:58 -0700, peer-error at excite.com (External Network , Error) wrote: , , ,Hi: , , , ,I am planning on developing a digital/brain interface. It uses FSK , ,[Frequency Shift Keying] signals. It is in a silicon-chip. This , ,silicon-chip is attached to a subjects visual cortex [chips , ,circuits connected to visual cortexs neurons]. The chip processes , ,FSK. The chip has information about the subjects visual cortex. In , ,order to produce the correct visual perception, it has to: , , , ,1. Convert to FSK information to a language the visual cortex can , ,understand , ,2. Excite the correct region[s] of the visual cortex with the , ,compatible language. , , , ,My design acts by affecting negative neuronal ions in the visual , ,cortex with electrons. The digital electric signal is initially , ,FSK-modulated. This signals format is then altered so that it can , ...
Researchers spe-cialised in psy-chi-a-try and psy-chol-o-gy at the Uni-ver-si-ty of Helsin-ki inves-ti-gat-ed the effects of depres-sion on visu-al per-cep-tion. The study con-firmed that the pro-cess-ing of visu-al infor-ma-tion is altered in depressed peo-ple, a phe-nom-e-non most like-ly linked with the pro-cess-ing of infor-ma-tion in the cere-bral cortex.. In the study, the pro-cess-ing of visu-al infor-ma-tion by patients with depres-sion was com-pared to that of a con-trol group by util-is-ing two visu-al tests. In the per-cep-tion tests, the study sub-jects com-pared the bright-ness and con-trast of sim-ple patterns.. What came as a sur-prise was that depressed patients per-ceived the con-trast of the images shown dif-fer-ent-ly from non-depressed indi-vid-u-als, says Acad-e-my of Fin-land Research Fel-low Vil-ja-mi Salmela … It would be ben-e-fi-cial to assess and fur-ther devel-op the usabil-i-ty of per-cep-tion tests, as both research meth-ods and poten-tial ways of ...
Fig: Distinct topography of place-memory and scene-perception activity in posterior cerebral cortex.. In all participants, three place-memory areas were observed, each located significantly anterior to one region of the scene-perception network. One example participant in Experiment 1 is shown (See Supplementary and Supplementary Video for thresholded and unthresholded activation maps for all participants (n = 14)). The participants scene perception ROIs are outlined in white, and place-memory activity is shown in warm colors. The scene-perception network (parahippocampal place area [PPA], occipital place area [OPA], and medial place area [MPA]) was localized by comparing the BOLD response when participants viewed images of scenes versus with faces (outlined in white, thresholded at vertex-wise p , 0.001). Place-memory areas on each surface were localized in separate fMRI runs by comparing the BOLD response when participants recalled personally familiar places versus people (warm colors, ...
Can functional vision be restored in blind human subjects using a microelectronic retinal prosthesis? The initial indications suggest that, yes, it is possible. However, the visual experience of these subjects is nothing like a digital scoreboard-like movie, with each electrode acting as an independent pixel. The work described here suggests that there are interactions between pulses and across electrodes, at the electrical, retinal, or even cortical level that influence the quality of the percept. In particular, this work addresses the question, how does the percept change as a function of pulse timing on single and multiple electrodes? The motivation for the work described here is that these interactions must be understood and predictable if we are to develop a functional tool for blind human patients ...
LITTLE is known about how visual attention of the mother-infant pair is directed jointly to objects and events in the visual surround during the first year of the childs life. To what extent does the child follow the mothers lead and the mother the childs, and what are the processes involved? The ability of the infant to respond successfully to such signals allows the mother to isolate and highlight a much wider range of environmental features than if the infant ignores her attention-directing efforts. We report a preliminary investigation of the extent of the infants ability to follow changes in adult gaze direction during the first year of life.
Oct 22, 2020 - Explore Antonia Haucks board Visual Learning on Pinterest. See more ideas about visual learning, teaching, learning.
Change Blindness is a phenomenon that occurs when a substantial change has taken place in ones visual field but one fails to notice it. Change blindness experience can be generated when a brief flash comes between two versions of a scene. This flash prevents the change from rising to the level of consciousness unless the person is actively attending to the object. The interesting aspect is that once the change is noticed, it seems so obvious. This program lets users trace out the pattern that they adopt when scanning through a blurred or low-contrast scene. Move the mouse to guide the circle and then click when youve found the change. ...
Authors: Belokopytov A., Rozhkova G., Gracheva M., Rychkova S., Kruttsova E.. The extreme retinal periphery: Experimental evidence of specific function suggested by A.Yarbus for blind retina // 40th European Conference on Visual Perception. 2017. Berlin, Germany. 27-31 of August. Retrieved from URL: http://journals.sagepub.com/page/pec/collections/ecvp-abstracts/index/ecvp-2017 on [8.03.2018], page 163 ...
www.MOLUNA.de Multisensory Object Perception in the Primate Brain [4175843] - It should come as no surprise to those interested in sensory processes that its research history is among the longest and richest of the many systematic efforts to understand how our bodies function. The continuing obsession with sensory systems is as much a re?ection of the fundamental need to understand
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): The early and late selection debate may be resolved if perceptual load of relevant information determines the selective processing of irrelevant information. This hypothesis was tested in 3 studies; all used a variation of the response competition paradigm to measure irrelevant processing when load in the relevant processing was varied. Perceptual load was manipulated by relevant display set size or by different processing requirements for identical displays. These included the requirement to process conjunctions versus isolated features and the requirement to perform simple detection of a characters presence versus difficult identifi-cation of its size and position. Distractors interference was found only under low-load conditions. Because the distractor was usually clearly distinct from the target, it is concluded that physical separation is not a sufficient condition for selective perception; overloading perception is
The load theory of visual attention proposes that efficient selective perceptual processing of task-relevant information during search is determined automatically by the perceptual demands of the display. If the perceptual demands required to process task-relevant information are not enough to consume all available capacity, then the remaining capacity automatically and exhaustively