scholarly journals Object categorization in visual periphery is modulated by delayed foveal noise

2019 ◽  
Vol 19 (9) ◽  
pp. 1 ◽  
Author(s):  
Farzad Ramezani ◽  
Saeed Reza Kheradpisheh ◽  
Simon J. Thorpe ◽  
Masoud Ghodrati
Keyword(s):  
Object Categorization ◽  
Visual Periphery

Quality Analysis of Object Categorization Benchmarks: Corel, Caltech, and IAPR Datasets

2011 ◽  
Vol 4 (2) ◽  
pp. 108-113
Author(s):  
Chih-Fong Tsai ◽  
Wei-Chao Lin ◽  
Chihli Hung
Keyword(s):  
Quality Analysis ◽  
Object Categorization

scholarly journals Evidence of fixed capacity in visual object categorization

2011 ◽  
Vol 18 (4) ◽  
pp. 713-721 ◽  
Author(s):  
Alec Scharff ◽  
John Palmer ◽  
Cathleen M. Moore
Keyword(s):  
Object Categorization ◽  
Visual Object

scholarly journals Hidden by bias: how standard psychophysical procedures conceal crucial aspects of peripheral visual appearance

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Fazilet Zeynep Yildirim ◽  
Daniel R. Coates ◽  
Bilge Sayim
Keyword(s):  
Visual Perception ◽  
Line Pair ◽  
Crucial Aspect ◽  
Time And Space ◽  
Contextual Modulation ◽  
Visual Appearance ◽  
Single Time ◽  
Visual Periphery ◽  
Contextual Stimuli ◽  
Biased Perception

AbstractThe perception of a target depends on other stimuli surrounding it in time and space. This contextual modulation is ubiquitous in visual perception, and is usually quantified by measuring performance on sets of highly similar stimuli. Implicit or explicit comparisons among the stimuli may, however, inadvertently bias responses and conceal strong variability of target appearance. Here, we investigated the influence of contextual stimuli on the perception of a repeating pattern (a line triplet), presented in the visual periphery. In the neutral condition, the triplet was presented a single time to capture its minimally biased perception. In the similar and dissimilar conditions, it was presented within stimulus sets composed of lines similar to the triplet, and distinct shapes, respectively. The majority of observers reported perceiving a line pair in the neutral and dissimilar conditions, revealing ‘redundancy masking’, the reduction of the perceived number of repeating items. In the similar condition, by contrast, the number of lines was overestimated. Our results show that the similar context did not reveal redundancy masking which was only observed in the neutral and dissimilar context. We suggest that the influence of contextual stimuli has inadvertently concealed this crucial aspect of peripheral appearance.

On Why Objects Appear Smaller in the Visual Periphery

2019 ◽  
Vol 31 (1) ◽  
pp. 88-96 ◽  
Author(s):  
Wladimir Kirsch ◽  
Roland Pfister ◽  
Wilfried Kunde
Keyword(s):  
Visual Field ◽  
Visual System ◽  
Structural Properties ◽  
Spatial Attention ◽  
Visuospatial Attention ◽  
Peripheral Target ◽  
Perceptual Distortion ◽  
Visual Periphery ◽  
Peripheral Location ◽  
Exogenous Cue

An object appears smaller in the periphery than in the center of the visual field. In two experiments ( N = 24), we demonstrated that visuospatial attention contributes substantially to this perceptual distortion. Participants judged the size of central and peripheral target objects after a transient, exogenous cue directed their attention to either the central or the peripheral location. Peripheral target objects were judged to be smaller following a central cue, whereas this effect disappeared completely when the peripheral target was cued. This outcome suggests that objects appear smaller in the visual periphery not only because of the structural properties of the visual system but also because of a lack of spatial attention.

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