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  • perceptual
  • Perceptual sensitivity was significantly enhanced only when participants who had previously learned control over ongoing activity were now exercising control and only for that region of visual cortex. (jneurosci.org)
  • Hence, this new approach could potentially allow us to voluntarily and temporarily increase perceptual sensitivity without relying on repeated exposure to (or training with) a specific visual stimulus. (jneurosci.org)
  • Other means of improving visual sensitivity, such as perceptual learning, require repeated exposure to a specific stimulus, are not under voluntary control, and are permanent. (jneurosci.org)
  • In the project, visual perceptual skills of children aged between four and ten years were assessed. (dipf.de)
  • The project focused on the question whether the correlation of an understanding of quantity relationships on the one hand and arithmetic skills on the other hand is mediated via the children's visual perceptual skills. (dipf.de)
  • We discuss how these data on motion perception fit within the broader literature on perceptual Bayesian priors, perceptual expectations, and statistical and perceptual learning and review the possible neural basis of priors. (frontiersin.org)
  • Indeed, statistical and perceptual learning studies show that the visual system continuously extracts and learns the statistical regularities of the environment, and can do so automatically and without awareness. (frontiersin.org)
  • Autistics score very highly on tests of perceptual detection and higher-level visual reasoning. (autismspeaks.org)
  • cortex
  • To test this, we trained human participants to control ongoing spontaneous activity in circumscribed regions of retinotopic visual cortex using real-time functional MRI-based neurofeedback. (jneurosci.org)
  • After training, we tested participants using a new and previously untrained visual detection task that was presented at the visual field location corresponding to the trained region of visual cortex. (jneurosci.org)
  • Typically, the level of ongoing activity in visual cortex is outside voluntary control because we do not have conscious access to it. (jneurosci.org)
  • Rather than studying differences in activity levels associated with ongoing spontaneous fluctuations, this new approach allowed us to selectively train participants to voluntarily "clamp" visual cortex activity at high or low levels. (jneurosci.org)
  • 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. (clinicaltrials.gov)
  • We also expect that brain imaging data will show decreased activation in visual regions ipsilateral to the focal lesions in prefrontal and parietal cortex, thus providing evidence that prefrontal and parietal cortex are sources of top-down modulation. (clinicaltrials.gov)
  • The results provide further support for previous findings by Vanderbilt researchers Frank Tong and Stephanie Harrison that the contents of working memory may be represented in early visual areas in the brain, including the primary visual cortex, that were previously thought to play no role in higher cognitive functions such as memory. (medicalxpress.com)
  • Processing is carried out in one direction from the retina to the visual cortex, with each successive stage in the visual pathway carrying out ever more complex analysis of the input. (simplypsychology.org)
  • Beck O, Chistiakova M, Obermayer K, Volgushev M (2005) Adaptation at synaptic connections to layer 2/3 pyramidal cells in rat visual cortex. (springer.com)
  • psychology
  • after I finished writing that post, ScienceDirect sent me an email alert with the contents of the October issue of the Journal of Personality and Social Psychology , in which there is a paper by Emily Balcetis and David Dunning 1 describing research that demonstrates an influence of motivation on fairly high-level visual perception - object recognition. (scienceblogs.com)
  • This study shows that holding the memory of a visual event in our mind for a short period of time can 'contaminate' visual perception during the time that we're remembering," Randolph Blake, study co-author and Centennial Professor of Psychology , said. (medicalxpress.com)
  • Covering the perception of location, motion, object recognition and with up-to-date information on the workings of the visual brain, the 3rd edition looks at how our ideas have been shaped, not just by psychology, but by art, optics, biology and philosophy. (routledge.com)
  • perceive
  • Biologists have long wished to know how visual communication between flowers and their pollinators works, but it's not an easy task as animals perceive colours quite differently from us. (phys.org)
  • Today we'll talk about how we perceive our visual surroundings . (vanseodesign.com)
  • visually
  • There are numerous instances where we engage in visually guided activities, such as driving, while rehashing visual events in our mind's eye. (medicalxpress.com)
  • You will be able to visually illustrate the principles of visual perception and use contrast to enhance your visualizations. (coursera.org)
  • psychologists
  • Vanderbilt University psychologists have found that our visual perception can be contaminated by memories of what we have recently seen, impairing our ability to properly understand and act on what we are currently seeing. (medicalxpress.com)
  • contrast
  • Here, we probed mouse visual perception and neural responses in areas V1 and LM using various types of second-order, contrast-modulated gratings with static noise carriers. (jneurosci.org)
  • SIGNIFICANCE STATEMENT To extract object boundaries in natural scenes, the primate visual system does not only rely on differences in local luminance but can also take into account differences in texture or contrast. (jneurosci.org)
  • relatively
  • They will focus on the activity of these connections during visual processing, as how these pathways function in normal individuals is relatively well understood. (autismspeaks.org)
  • extract
  • In between saccades we allow our eyes to briefly fixate on one location and we extract visual data before starting the next saccade. (vanseodesign.com)
  • mechanisms
  • Our findings provide compelling evidence that visual working memory representations directly interact with the same neural mechanisms involved in processing basic sensory events," Kang and his colleagues wrote. (medicalxpress.com)
  • study
  • At first, this might seem like a case of motivation (poor kids wanting money) affecting perception, but there was a problem with this study, and the line of research that it spawned. (scienceblogs.com)
  • This study will focus on brain regions involved in visual perception and attention. (clinicaltrials.gov)
  • In the context of a norming study and reissue of the psychological testing procedure FEW-2 (Frostig's developmental test of visual perception), ViWa was administered to children aged between four and ten years. (dipf.de)
  • A second study using high school students found that visual perception and intelligence test scores were highly correlated, indicating overlap of behavior tapped. (ed.gov)
  • Efficiency
  • We demonstrate the efficiency and robustness of this perception system in a real humanoid robot participating in the RoboCup SPL competition. (springer.com)
  • field
  • Common sense tells us that this mental replay is harmless in that it does not interfere with our ability to register and react to objects within our visual field," Kang and his co-authors wrote. (medicalxpress.com)
  • An undergraduate's honor's thesis involved measurements of both VPEL settings and manual matches to targets through a range of elevations above and below VPEL, and showed that the influence of the visual field on VPEL was part of a shift of the entire dimension of perceived elevation along with closely related sensorimotor mislocalizations. (dtic.mil)
  • visuals
  • You will assess how data and design work together, including how to choose the appropriate visual representation for your data, and the difference between effective and ineffective visuals. (coursera.org)
  • object
  • These findings shed light on basic steps of feature extraction along the mouse visual cortical hierarchy, which may ultimately lead to object recognition. (jneurosci.org)
  • knowledge
  • It is hard to imagine how Wade's and Swanston's textbooks could be improved upon and for anyone who wishes to acquire detailed knowledge of visual perception, this latest edition provides an unbeatable source. (routledge.com)
  • memory
  • Since the kids were estimating the size of coins without real coins sitting in front of them, what motivation was affecting was their memory of the sizes of coins, and not necessarily their perception of coins. (scienceblogs.com)
  • We propose a novel active visual memory that moves the camera to detect objects in robot's surroundings and tracks their positions. (springer.com)
  • This visual memory is based on a combination of multi-modal filters that efficiently integrates partial information. (springer.com)
  • partial
  • A particular perception is simulated in terms of partial synchronization between the central element and some sub-group of peripheral elements. (springer.com)
  • areas
  • Specifically, we wish to investigate the interaction between areas involved in attentional control and visual areas modulated by attention. (clinicaltrials.gov)
  • Direction
  • R.N. Aslin, Perception of Visual Direction in Human Infants. (routledge.com)
  • Eye pursuit complicates the perception of the heading direction and the direction axis of rotation relative to the head from the visual flow. (frontiersin.org)
  • For example, even at the instant when the eyes' and the head's reference frames are aligned, the eyes' horizontal pursuit velocity alters the visual flow in such a way that the center of expanding flow is horizontally displaced relative to the heading direction when the head is moved forward. (frontiersin.org)
  • The sample talks about about direction and movement and LeFred wondered if some of the information is invalidated by what we now know about saccadic eye movement and visual perception. (vanseodesign.com)
  • research
  • Although other research groups have compared the behavior of patients with various focal lesions or have performed fMRI studies of visual attention in neurologically normal patients, we are unaware of any concerted effort to perform fMRI in patients with focal lesions in order to functionally isolate the contributions of individual cortical regions that serve as critical nodes in the attentional network. (clinicaltrials.gov)
  • important
  • The perception of absolute distance has been assumed to be important in the perception of the size of objects and the depth between them. (dtic.mil)
  • A more complete understanding of autistic individuals' strength in perception and visual reasoning may have important implications with respect to selecting and creating parenting, teaching, and workplace strategies that leverage these abilities. (autismspeaks.org)