Reduced perceptual processing speed and atypical attentional weight at the cores of visual simultaneous processing deficits in Chinese children with developmental dyslexia: a parameter-based assessment of visual attention

2021 ◽  
Author(s):  
Jing Zhao ◽  
Jie Li ◽  
Yue Yang
Keyword(s):  
Visual Attention ◽  
Developmental Dyslexia ◽  
Processing Speed ◽  
Perceptual Processing ◽  
Chinese Children ◽  
Simultaneous Processing ◽  
Processing Deficits ◽  
Attentional Weight

Slow perceptual processing at the core of developmental dyslexia: A parameter-based assessment of visual attention

2011 ◽  
Vol 49 (12) ◽  
pp. 3454-3465 ◽  
Author(s):  
Prisca Stenneken ◽  
Johanna Egetemeir ◽  
Gerd Schulte-Körne ◽  
Hermann J. Müller ◽  
Werner X. Schneider ◽  
...  
Keyword(s):  
Visual Attention ◽  
Developmental Dyslexia ◽  
Perceptual Processing ◽  
The Core

scholarly journals Temporal expectancy in the context of a theory of visual attention

2013 ◽  
Vol 368 (1628) ◽  
pp. 20130054 ◽  
Author(s):  
Signe Vangkilde ◽  
Anders Petersen ◽  
Claus Bundesen
Keyword(s):  
Visual Attention ◽  
Processing Speed ◽  
Hazard Rate ◽  
Stimulus Presentation ◽  
Letter Recognition ◽  
Perceptual Processing ◽  
Rate Condition ◽  
Temporal Expectancy ◽  
Temporal Expectation ◽  
Condition Stimulus

Temporal expectation is expectation with respect to the timing of an event such as the appearance of a certain stimulus. In this paper, temporal expectancy is investigated in the context of the theory of visual attention (TVA), and we begin by summarizing the foundations of this theoretical framework. Next, we present a parametric experiment exploring the effects of temporal expectation on perceptual processing speed in cued single-stimulus letter recognition with unspeeded motor responses. The length of the cue–stimulus foreperiod was exponentially distributed with one of six hazard rates varying between blocks. We hypothesized that this manipulation would result in a distinct temporal expectation in each hazard rate condition. Stimulus exposures were varied such that both the temporal threshold of conscious perception ( t 0 ms) and the perceptual processing speed ( v letters s −1 ) could be estimated using TVA. We found that the temporal threshold t 0 was unaffected by temporal expectation, but the perceptual processing speed v was a strikingly linear function of the logarithm of the hazard rate of the stimulus presentation. We argue that the effects on the v values were generated by changes in perceptual biases, suggesting that our perceptual biases are directly related to our temporal expectations.

scholarly journals TVA in the wild: Applying the theory of visual attention to game-like and less controlled experiments

2021 ◽  
Vol 3 (1) ◽  
pp. 1-46
Author(s):  
Alexander Krüger ◽  
Jan Tünnermann ◽  
Lukas Stratmann ◽  
Lucas Briese ◽  
Falko Dressler ◽  
...  
Keyword(s):  
Visual Attention ◽  
Computer Games ◽  
Driving Simulator ◽  
Formal Theory ◽  
Partial Report ◽  
Visual Encoding ◽  
In The Wild ◽  
Series Of Experiments ◽  
Attentional Weight ◽  
Sufficient Precision

Abstract As a formal theory, Bundesen’s theory of visual attention (TVA) enables the estimation of several theoretically meaningful parameters involved in attentional selection and visual encoding. As of yet, TVA has almost exclusively been used in restricted empirical scenarios such as whole and partial report and with strictly controlled stimulus material. We present a series of experiments in which we test whether the advantages of TVA can be exploited in more realistic scenarios with varying degree of stimulus control. This includes brief experimental sessions conducted on different mobile devices, computer games, and a driving simulator. Overall, six experiments demonstrate that the TVA parameters for processing capacity and attentional weight can be measured with sufficient precision in less controlled scenarios and that the results do not deviate strongly from typical laboratory results, although some systematic differences were found.

Altered topological organization of brain structural network in Chinese children with developmental dyslexia

2015 ◽  
Vol 589 ◽  
pp. 169-175 ◽  
Author(s):  
Kai Liu ◽  
Lin Shi ◽  
Feiyan Chen ◽  
Mary M.Y. Waye ◽  
Cadmon K.P. Lim ◽  
...  
Keyword(s):  
Developmental Dyslexia ◽  
Chinese Children ◽  
Structural Network ◽  
Topological Organization

Orthographic processing deficits in developmental dyslexia: Beyond the ventral visual stream

NeuroImage ◽  
2016 ◽  
Vol 128 ◽  
pp. 316-327 ◽  
Author(s):  
Marianna Boros ◽  
Jean-Luc Anton ◽  
Catherine Pech-Georgel ◽  
Jonathan Grainger ◽  
Marcin Szwed ◽  
...  
Keyword(s):  
Developmental Dyslexia ◽  
Orthographic Processing ◽  
Visual Stream ◽  
Ventral Visual Stream ◽  
Processing Deficits
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