Probing intermediate stages of shape processing
G Loffler - Journal of Vision, 2015 - jov.arvojournals.org
The visual system provides a representation of what and where objects are. This entails
parsing the visual scene into distinct objects. Initially, the visual system encodes information …
parsing the visual scene into distinct objects. Initially, the visual system encodes information …
Mental structures
KJ Lande - Noûs, 2021 - Wiley Online Library
An ongoing philosophical discussion concerns how various types of mental states fall within
broad representational genera—for example, whether perceptual states are “iconic” or …
broad representational genera—for example, whether perceptual states are “iconic” or …
Visual search targeting either local or global perceptual processes differs as a function of autistic-like traits in the typically developing population
RA Almeida, JE Dickinson, MT Maybery… - Journal of autism and …, 2013 - Springer
Relative to low scorers, high scorers on the Autism-Spectrum Quotient (AQ) show enhanced
performance on the Embedded Figures Test and the Radial Frequency search task (RFST) …
performance on the Embedded Figures Test and the Radial Frequency search task (RFST) …
Global shape aftereffects have a local substrate: A tilt aftereffect field
JE Dickinson, RA Almeida, J Bell… - Journal of …, 2010 - jov.arvojournals.org
Adaptation to prevailing stimuli is a ubiquitous property of the visual system that optimizes its
dynamic range. The perceived difference in orientation of successively presented lines of …
dynamic range. The perceived difference in orientation of successively presented lines of …
[HTML][HTML] Non-linear global pooling in the discrimination of circular and non-circular shapes
G Schmidtmann, GJ Kennedy, HS Orbach, G Loffler - Vision Research, 2012 - Elsevier
The ability to discriminate minute deviations from circularity is dependent upon global
summation mechanisms integrating information along entire contours. The aim of this study …
summation mechanisms integrating information along entire contours. The aim of this study …
[HTML][HTML] Radial frequency adaptation reveals interacting contour shape channels
Combinations of radial frequency (RF) patterns may be used to represent the contours of
complex shapes. Previous work has shown that many radial frequency patterns are …
complex shapes. Previous work has shown that many radial frequency patterns are …
Near their thresholds for detection, shapes are discriminated by the angular separation of their corners
Observers make sense of scenes by parsing images on the retina into meaningful objects.
This ability is retained for line drawings, demonstrating that critical information is …
This ability is retained for line drawings, demonstrating that critical information is …
[HTML][HTML] Narrow-band radial frequency shape channels revealed by sub-threshold summation
J Bell, DR Badcock - Vision Research, 2009 - Elsevier
Radial Frequency (RF) contours provide a unifying system to represent familiar shapes,
such as triangles (RF3), squares (RF4) and pentagons (RF5), but it is not clear whether …
such as triangles (RF3), squares (RF4) and pentagons (RF5), but it is not clear whether …
Detecting shape change: Characterizing the interaction between texture-defined and contour-defined borders
The human visual system's extreme sensitivity to subtle changes in shape can often be
attributed to global pooling of local information. This has been shown for shapes described …
attributed to global pooling of local information. This has been shown for shapes described …
[HTML][HTML] Global shape processing involves a hierarchy of integration stages
Radial Frequency (RF) patterns can be used to study the processing of familiar shapes, eg
triangles and squares. Opinion is divided over whether the mechanisms that detect these …
triangles and squares. Opinion is divided over whether the mechanisms that detect these …