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Attention alters appearance
Does attention alter appearance? This critical issue, debated for over a century, remains unsettled. From psychophysical evidence that covert attention affects early vision—it enhances contrastExpand
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Emotion Facilitates Perception and Potentiates the Perceptual Benefits of Attention
Does emotion affect how people see? We investigated the effects of emotion and attention, as well as their conjoint effect, on contrast sensitivity, a dimension of early vision. We manipulated theExpand
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How spatial and feature-based attention affect the gain and tuning of population responses
How does attention optimize our visual system for the task at hand? Two mechanisms have been proposed for how attention improves signal processing: gain and tuning. To distinguish between these twoExpand
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Sustained and transient covert attention enhance the signal via different contrast response functions
We investigated the mechanisms underlying the effects of sustained and transient covert attention on contrast sensitivity. The aim of this study was twofold: (1) Using a zero-noise display, weExpand
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Perceptual Learning Selectively Refines Orientation Representations in Early Visual Cortex
Although practice has long been known to improve perceptual performance, the neural basis of this improvement in humans remains unclear. Using fMRI in conjunction with a novel signal detection-basedExpand
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When sustained attention impairs perception
Virtually all behavioral and neurophysiological studies have shown that sustained (endogenous, conceptually driven) attention enhances perception. But can this enhancement be held indefinitely? WeExpand
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A population-coding model of attention’s influence on contrast response: Estimating neural effects from psychophysical data
Human psychophysics and monkey physiology studies have shown that attention modulates early vision - contrast sensitivity and processing. But how can we bridge the effects of attention on perceptualExpand
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Transient covert attention does alter appearance: A reply to Schneider (2006)
We recently demonstrated that transient covert attention increases the apparent contrast of a stimulus (Carrasco, Ling, & Read, 2004). Schneider (2006) proposes that the observed increase in apparentExpand
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Attention alters orientation processing in the human lateral geniculate nucleus
Orientation selectivity is a cornerstone property of vision, commonly believed to emerge in the primary visual cortex. We found that reliable orientation information could be detected even earlier,Expand
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Transient attention does increase perceived contrast of suprathreshold stimuli: A reply to Prinzmetal, Long, and Leonhardt (2008)
Carrasco, Ling, and Read (2004) showed that transient attention increases perceived contrast. However, Prinzmetal, Long, and Leonhardt (2008) suggest that for targets of low visibility, observers mayExpand
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