• Publications
  • Influence
Aging Reduces Center-Surround Antagonism in Visual Motion Processing
Discriminating the direction of motion of a low-contrast pattern becomes easier with increasing stimulus area. However, increasing the size of a high-contrast pattern makes it more difficult forExpand
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Signal but not noise changes with perceptual learning
Perceptual discrimination improves with practice. This ‘perceptual learning’ is often specific to the stimuli presented during training, indicating that practice may alter the responseExpand
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Inversion Leads to Quantitative, Not Qualitative, Changes in Face Processing
Humans are remarkably adept at recognizing objects across a wide range of views. A notable exception to this general rule is that turning a face upside down makes it particularly difficult toExpand
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Identification of band-pass filtered letters and faces by human and ideal observers
To better understand how the visual system makes use of information across spatial scales when identifying different kinds of complex patterns, we measured human and ideal contrast identificationExpand
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The effects of aging on motion detection and direction identification
Random dot cinematograms were used to probe motion perception in human observers ranging from 23 to 81 years of age. Stimuli were either broadband directional Noise, which produces no experience ofExpand
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Deriving behavioural receptive fields for visually completed contours
The visual system is constantly faced with the problem of identifying partially occluded objects from incomplete images cast on the retinae. Phenomenologically, the visual system seems to fill inExpand
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The physical limits of grating visibility
We examined the extent to which pre-neural factors constrain the detectability of sinusoidal gratings of different spatial frequencies and luminances. Contrast sensitivity functions were measured inExpand
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The Spatial Distribution of Inhibition of Return
Inhibition of return (IOR) refers to the finding that response times (RTs) are typically slower for targets at previously attended (cued) locations than for targets at novel (uncued) locations.Expand
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Effects of aging on the useful field of view.
Previous research has shown that the useful field of view (UFOV) is a useful tool in predicting driving ability, and the UFOV also seems to decline with age. The goals of the current study wereExpand
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Holistic Processing Is Not Correlated With Face-Identification Accuracy
The current study tested the widespread assumption that holistic processing is important for the identification of upright faces. In two experiments, we show that (a) there are large individualExpand
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