Videos tagged 'Vision Science Sponsored Talks'
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Robert H. Wurtz "Brain Circuits for Stable Visual Perception"
Robert H. Wurtz: Brain Circuits for Stable Visual Perception. Vision Sciences Society Annual Meeting, Keynote 2009. Abstract: In the 19th century von Helmholtz detailed the need for signals in the brain that provide information about each impending eye movement. He argued that such signals coul...
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Carla Shatz "Releasing the Brake on Ocular Dominance Plasticity"
Carla Shartz: Releasing the Brake on Ocular Dominance Plasticity. Vision Sciences Society Annual Meeting, Keynote 2010. Connections in adult visual system are highly precise, but they do not start out that way. Precision emerges during critical periods of development as synaptic connections rem...
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Daniel Wolpert "Probabilistic Models of Human Sensorimotor Control"
Daniel Wolpert: Probabilistic Models of Human Sensorimotor Control. Vision Sciences Society Annual Meeting, Keynote 2011. The effortless ease with which humans move our arms, our eyes, even our lips when we speak masks the true complexity of the control processes involved. This is evident when ...
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Ranulfo Romo "Conversion of sensory signals into perceptual decisions"
Ranulfo Romo: Conversion of sensory signals into perceptual decisions. Vision Sciences Society Annual Meeting, Keynote 2012. Most perceptual tasks require sequential steps to be carried out. This must be the case, for example, when subjects discriminate the difference in frequency between two m...
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Michael Tarr "Twenty years in twenty slides: A brief history of vision"
OPAM 2012 Keynote Address
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Larry Abbott "The Interaction of Evoked and Spontaneous Activity in Visual Processing"
Larry Abbott. VSS Keynote Address 2007: The Interaction of Evoked and Spontaneous Activity in Visual Processing. In vivo recordings from primary visual cortex reveal that spontaneous background activity can be as complex as activity evoked by visual stimuli. Embedding visually evoked responses in...
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Edward Callaway "Unraveling fine-scale and cell-type specificity of visual cortical circuits"
Edward Callaway. VSS Keynote Address 2008: Unraveling fine-scale and cell-type specificity of visual cortical circuits. We have studied primary visual cortex to better understand how neural circuits give rise to perception. We have found that cortical circuits are extremely precise, such that dif...
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Andrew Smith "New Directions in Cognitive Neuroscience Symposium 2007: Functional MRI: Beyond the Blob"
The standard fMRI group analysis is based on statistical detection of task-related brain activity that has a consistent location across brains. The use of this technique has revealed a great deal about the organization of the human brain. Arguably, it has revealed more than has neuropsychology an...
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Sophie Wuerger "CGIV 2006: Colour Appearance and Cone Signals: How does the Human Brain Combine the Retinal Cone Signals to Yield Colour Sensations such as Red, Green, Yellow and Blue?"
What computation does the human brain perform when we experience "red" (or green, or yellow, or blue)? How does the human visual system combine the retinal cone signals (L, M, S cones) to yield these colour sensations? To address this question we ask observers to select the colour which appears ...
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Iain Gilchrist "AVA Annual Meeting 2007: Active Vision: Asking the Right Questions about Human Vision"
Iain highlights how it is vital that we study saccadic eye movement when researching vision. He demonstrates how many in the Vision Science community ignore two basic properties of vision that are intrinsically connected; (1) the eyes move (2) visual sensitivity is highly heterogeneous across vis...
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Richard Bone "Coloured Filters in the Eye 2006: Macular Pigment Optical Density Determined by Reflectometry and Flicker: Is Flicker the Gold Standard?"
Heterochromatic flicker photometry (HFP) is often regarded as setting the standard with which other methods of determining macular pigment optical density (MPOD) should be compared. We have developed a reflectometry method employing a retinal camera modified with multi-bandpass filters that provi...
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David Brainard "Understanding the appearance of small spot colors"
Understanding the Appearance of Small Spot Colors. Cambridge Research Systems Lecture, Vision Meeting of the UK Colour Group, January 12, 2006, London. [This work is published as: Brainard, D. H., Williams, D. R., & Hofer, H. (2008). Trichromatic reconstruction from the interleaved cone mosai...