scholarly journals Failure to replicate a reported U-shaped visual masking function

1969 ◽  
Vol 15 (4) ◽  
pp. 195-196 ◽  
Author(s):  
Charles W. Eriksen ◽  
Philip H. Marshall
Keyword(s):  
Visual Masking ◽  
Masking Function

Models and Mechanisms in Visual Masking

1986 ◽  
Vol 31 (6) ◽  
pp. 439-441
Author(s):  
Bruce Bridgeman
Keyword(s):  
Visual Masking

Current concerns in visual masking.

Emotion ◽  
2006 ◽  
Vol 6 (4) ◽  
pp. 675-680 ◽  
Author(s):  
Stefan Wiens
Keyword(s):  
Visual Masking ◽  
Current Concerns

scholarly journals The Neurophysiology of Backward Visual Masking: Information Analysis

1999 ◽  
Vol 11 (3) ◽  
pp. 300-311 ◽  
Author(s):  
Edmund T. Rolls ◽  
Martin J. Tovée ◽  
Stefano Panzeri
Keyword(s):  
Visual Processing ◽  
Visual Information ◽  
Computational Models ◽  
Direct Evidence ◽  
Visual Masking ◽  
Neuronal Response ◽  
Short Soas ◽  
Stimulus Onset ◽  
Backward Masking ◽  
Neuronal Responses

Backward masking can potentially provide evidence of the time needed for visual processing, a fundamental constraint that must be incorporated into computational models of vision. Although backward masking has been extensively used psychophysically, there is little direct evidence for the effects of visual masking on neuronal responses. To investigate the effects of a backward masking paradigm on the responses of neurons in the temporal visual cortex, we have shown that the response of the neurons is interrupted by the mask. Under conditions when humans can just identify the stimulus, with stimulus onset asynchronies (SOA) of 20 msec, neurons in macaques respond to their best stimulus for approximately 30 msec. We now quantify the information that is available from the responses of single neurons under backward masking conditions when two to six faces were shown. We show that the information available is greatly decreased as the mask is brought closer to the stimulus. The decrease is more marked than the decrease in firing rate because it is the selective part of the firing that is especially attenuated by the mask, not the spontaneous firing, and also because the neuronal response is more variable at short SOAs. However, even at the shortest SOA of 20 msec, the information available is on average 0.1 bits. This compares to 0.3 bits with only the 16-msec target stimulus shown and a typical value for such neurons of 0.4 to 0.5 bits with a 500-msec stimulus. The results thus show that considerable information is available from neuronal responses even under backward masking conditions that allow the neurons to have their main response in 30 msec. This provides evidence for how rapid the processing of visual information is in a cortical area and provides a fundamental constraint for understanding how cortical information processing operates.

Backward Visual Masking with Homogeneous and Patterned Stimuli: Comparison of Retarded and Nonretarded Subjects

1972 ◽  
Vol 34 (3) ◽  
pp. 903-908 ◽  
Author(s):  
Gary C. Galbraith ◽  
Jack B. Gliddon
Keyword(s):  
Visual Masking ◽  
Mentally Retarded ◽  
Intellectual Ability ◽  
Test Flash ◽  
Pattern Masking ◽  
Actual Degree

10 mentally retarded and 10 age-matched nonretarded (normal) Ss were tested under two conditions of backward visual masking: with a homogeneous masking flash and with a pattern masking flash. The results showed that retardates had higher thresholds (impaired detection of the test flash) than nonretardates under both masking conditions, but especially with the pattern masking flash. These results are interpreted in light of published reports that masking with a homogeneous flash occurs peripherally, while masking with a pattern flash occurs centrally. Hence, the inferior performance of retardates under conditions of pattern masking implies primarily central perceptual deficits. In addition, evidence is presented that such deficits may be related to the actual degree of intellectual ability.

A Basic Psychophysics Study of Visual Masking Effect on Kanji Recognition for Image Recognition Technology

2021 ◽  
Author(s):  
Qi Dai ◽  
Lichang Yao ◽  
Ikue Hattori ◽  
Qiong Wu ◽  
Jiajia Yang ◽  
...  
Keyword(s):  
Image Recognition ◽  
Visual Masking ◽  
Masking Effect ◽  
Visual Masking Effect

scholarly journals Remapped visual masking

2011 ◽  
Vol 11 (1) ◽  
pp. 13-13 ◽  
Author(s):  
A. R. Hunt ◽  
P. Cavanagh
Keyword(s):  
Visual Masking

Visual Masking Following Transient Adaptation

1971 ◽  
Vol 61 (7) ◽  
pp. 955
Author(s):  
L. E. BANDERET ◽  
W. H. PAYNE
Keyword(s):  
Visual Masking

Low-dimensional dynamics of a turbulent wall flow

2001 ◽  
Vol 435 ◽  
pp. 81-91 ◽  
Author(s):  
JAVIER JIMÉNEZ ◽  
MARK P. SIMENS
Keyword(s):  
Numerical Simulations ◽  
Single Copy ◽  
Streamwise Vortices ◽  
Low Velocity ◽  
Wall Distance ◽  
Wall Flow ◽  
Low Dimensional ◽  
Turbulent Wall ◽  
Low Dimensional Dynamics ◽  
Masking Function

The low-dimensional dynamics of the structures in a turbulent wall flow are studied by means of numerical simulations. These are made both ‘minimal’, in the sense that they contain a single copy of each relevant structure, and ‘autonomous’ in the sense that there is no outer turbulent flow with which they can interact. The interaction is prevented by a numerical mask that damps the flow above a given wall distance, and the flow behaviour is studied as a function of the mask height. The simplest case found is a streamwise wave that propagates without change. It takes the form of a single wavy low-velocity streak flanked by two counter-rotating staggered quasi-streamwise vortices, and is found when the height of the numerical masking function is less than δ+1 ≈ 50. As the mask height is increased, this solution bifurcates into an almost-perfect limit cycle, a two-frequency torus, weak chaos, and full-edged bursting turbulence. The transition is essentially complete when δ+1 ≈ 70, even if the wall-parallel dimensions of the computational box are small enough for bursting turbulence to be metastable, lasting only for a few bursting cycles. Similar low-dimensional dynamics are found in somewhat larger boxes, containing two copies of the basic structures, in which the bursting turbulence is self-sustaining.

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