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Abnormal global processing along the dorsal visual pathway in autism: a possible mechanism for weak visuospatial coherence?
Frith and Happe (Frith, U., & Happe, F. (1994). Autism: Beyond theory of mind. Cognition, 50, 115-132) argue that individuals with autism exhibit 'weak central coherence': an inability to integrateExpand
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Global motion perception: No interaction between the first- and second-order motion pathways
The experiments reported here address the issue of whether the pathways which extract motion from first-order and second-order spatial patterns remain separate or whether they combine at some higherExpand
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Specific reading disability: differences in contrast sensitivity as a function of spatial frequency.
Contrast thresholds for sine-wave gratings of spatial frequencies of 2, 4, 12, and 16 cycles per degree were determined for normal and disabled readers at a range of stimulus durations. NormalExpand
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Depth-increment detection function for individual spatial channels.
  • D. Badcock, C. Schor
  • Physics, Medicine
  • Journal of the Optical Society of America. A…
  • 1 July 1985
We have used stimuli with difference-of-Gaussian (DOG) luminance profiles to measure depth-increment thresholds within postulated spatial channels as functions of depth from the fixation plane.Expand
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Global motion perception: Interaction of the ON and OFF pathways
A number of experiments were conducted to investigate the interaction of the ON and OFF pathways in the processing of global-motion signals. The stimulus employed was a variant of that used byExpand
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Adaptive pooling of visual motion signals by the human visual system revealed with a novel multi-element stimulus.
The two-dimensional (2D) trajectory of visual motion is usually not directly available to the visual system. Local one-dimensional (1D) sensors initiate processing but can only restrict the solutionExpand
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Spatial location and hyperacuity: The centre/surround localization contribution function has two substrates
Vernier acuity and jump detection were investigated using a perturbation technique, in which a flanking line is placed to one side of the target line. The size and direction of vernier displacement,Expand
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Coherent global motion in the absence of coherent velocity signals
It is widely believed that form and motion are analysed separately in mammalian visual systems. Form is confined within a stream that projects ventrally from V1 to the inferotemporal cortex, andExpand
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Spatial location and hyperacuity: flank position within the centre and surround zones.
Sensitivity to a horizontal displacement of a vertical line was measured in order to ascertain the influence of the location of parallel flanking lines on the apparent position of features in visualExpand
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A Simple Hebbian/Anti-Hebbian Network Learns the Sparse, Independent Components of Natural Images
Slightly modified versions of an early Hebbian/anti-Hebbian neural network are shown to be capable of extracting the sparse, independent linear components of a prefiltered natural image set. AnExpand
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