scholarly journals Revealing boundary-contour based surface representation through the time course of binocular rivalry

2011 ◽  
Vol 51 (11) ◽  
pp. 1288-1296 ◽  
Author(s):  
Yong R. Su ◽  
Zijiang J. He ◽  
Teng Leng Ooi
Keyword(s):  
Binocular Rivalry ◽  
Time Course ◽  
Boundary Contour ◽  
Surface Representation

scholarly journals The time course of binocular rivalry reveals a fundamental role of noise

2006 ◽  
Vol 6 (11) ◽  
pp. 8-8 ◽  
Author(s):  
J. W. Brascamp ◽  
R. van Ee ◽  
A. J. Noest ◽  
R. H. A. H. Jacobs ◽  
A. V. van den Berg
Keyword(s):  
Binocular Rivalry ◽  
Time Course

scholarly journals The time course of binocular rivalry during the phases of the menstrual cycle

2016 ◽  
Vol 16 (15) ◽  
pp. 22 ◽  
Author(s):  
Jocelyn L. Sy ◽  
Andrew J. Tomarken ◽  
Vaama Patel ◽  
Randolph Blake
Keyword(s):  
Menstrual Cycle ◽  
Binocular Rivalry ◽  
Time Course

scholarly journals Evidence for neural rhythms embedded within binocular rivalry

2019 ◽  
Vol 116 (30) ◽  
pp. 14811-14812 ◽  
Author(s):  
Oakyoon Cha ◽  
Randolph Blake
Keyword(s):  
Binocular Rivalry ◽  
Time Course ◽  
Time Series Data ◽  
Brain Activity ◽  
Series Data ◽  
Neural Oscillations ◽  
Large Dataset ◽  
Perceptual Judgments ◽  
Multistable Perception ◽  
Periodic Fluctuations

Evidence for perceptual periodicity emerges from studies showing periodic fluctuations in visual perception and decision making that are accompanied by neural oscillations in brain activity. We have uncovered signs of periodicity in the time course of binocular rivalry, a widely studied form of multistable perception. This was done by analyzing time series data contained in an unusually large dataset of rivalry state durations associated with states of exclusive monocular dominance and states of mixed perception during transitions between exclusive dominance. Identifiable within the varying durations of dynamic mixed perception are rhythmic clusters of durations whose incidence falls within the frequency band associated with oscillations in neural activity accompanying periodicity in perceptual judgments. Endogenous neural oscillations appear to be especially impactful when perception is unusually confounding.

Binocular Rivalry and Surface-Boundary Processing

Perception ◽  
10.1068/p5489 ◽  
2006 ◽  
Vol 35 (5) ◽  
pp. 581-603 ◽  
Author(s):  
Teng Leng Ooi ◽  
Zijiang J He
Keyword(s):  
Visual System ◽  
Binocular Rivalry ◽  
Empirical Studies ◽  
Surface Boundary ◽  
Boundary Contour ◽  
Similar Stimulus ◽  
Perceptual Salience ◽  
Matching Process ◽  
Contour Information ◽  
Stimulus Design

Theoretical and empirical studies show that the visual system relies on boundary contours and surface features (eg textures) to represent 3-D surfaces. When the surface to be represented has little texture information, or has a periodic texture pattern (grating), the boundary contour information assumes a larger weight in representing the surface. Adopting the premise that the mechanisms of 3-D surface representation also determine binocular rivalry perception, the current paper focuses on whether boundary contours have a similar role in binocular rivalry. In experiment 1, we tested the prediction that the visual system prefers selecting an image/figure defined by boundary contours for rivalry dominance. We designed a binocular rivalry stimulus wherein one half-image has a boundary contour defined by a grating disk on a background with an orthogonal grating orientation. The other half-image consists solely of the (same orientation) grating background without the grating disk, ie no boundary contour. Confirming our prediction, the predominance for the half-image with the grating disk is ∼90%, despite the fact that the grating disk corresponds to an area with orthogonal grating in the fellow eye. The advantage of the grating disk is dramatically reduced to about 50% predominance when a boundary contour is added to the background-only half-image at the location corresponding to the grating disk. We attribute this reduced advantage to the formation of a corresponding binocular boundary contour. In experiment 2 the grating background was substituted by a random-dot background in a similar stimulus design. We found that the perceptual salience of the corresponding binocular boundary contours extracted by the interocular matching process is an important factor in determining the dynamics of binocular rivalry. Experiment 3 showed that vertical lines with uneven thickness and spacing as the background reduce the contribution of the monocular boundary contour of the grating disk in binocular rivalry, possibly through the formation of binocular boundary contours between the local edges (vertical components) of the vertical lines and the corresponding grating disk.

scholarly journals Revisiting individual differences in the time course of binocular rivalry

2018 ◽  
Vol 18 (7) ◽  
pp. 3 ◽  
Author(s):  
Jan W. Brascamp ◽  
Mark W. Becker ◽  
David Z. Hambrick
Keyword(s):  
Individual Differences ◽  
Binocular Rivalry ◽  
Time Course

scholarly journals The reign of typicality in semantic memory

2007 ◽  
Vol 362 (1481) ◽  
pp. 813-821 ◽  
Author(s):  
Karalyn Patterson
Keyword(s):  
Lexical Decision ◽  
Cognitive Performance ◽  
Semantic Memory ◽  
Conceptual Knowledge ◽  
Time Course ◽  
Event Related Potential ◽  
Object Naming ◽  
Surface Representation ◽  
Object Processing ◽  
Conceptual Processing

This paper begins with a brief description of a theoretical framework for semantic memory, in which processing is inherently sensitive to the varying typicality of its representations. The approach is then elaborated with particular regard to evidence from semantic dementia, a disorder resulting in relatively selective deterioration of conceptual knowledge, in which cognitive performance reveals ubiquitous effects of typicality. This applies to frankly semantic tasks (like object naming), where typicality can be gauged by the extent to which an object or concept is characterized by shared features in its category. It also applies in tasks apparently requiring only access to a ‘surface’ representation (such as lexical decision) or translation from one surface representation to another (like reading words aloud), where typicality is defined in terms of the structure of the surface domain(s). The effects of surface-domain typicality also appear early in the time course of word and object processing by normal participants, as revealed in event-related potential studies. These results suggest that perceptual and conceptual processing form an interactive continuum rather than distinct stages, and that typicality effects reign throughout this continuum.

scholarly journals On the contribution of second-order boundary contour strength to binocular rivalry

2010 ◽  
Vol 6 (6) ◽  
pp. 851-851 ◽  
Author(s):  
J. Xu ◽  
Z. J. He ◽  
T. L. Ooi
Keyword(s):  
Binocular Rivalry ◽  
Second Order ◽  
Boundary Contour ◽  
Contour Strength

scholarly journals Differentiating the contributions of surface feature and boundary contour strengths in binocular rivalry

2010 ◽  
Vol 10 (7) ◽  
pp. 335-335
Author(s):  
X. Li ◽  
Y. G. Su ◽  
T. L. Ooi ◽  
Z. J. He
Keyword(s):  
Binocular Rivalry ◽  
Surface Feature ◽  
Boundary Contour
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