scholarly journals Attentional Modulation of Temporal Contrast Sensitivity in Human Vision

PLoS ONE ◽  
2011 ◽  
Vol 6 (4) ◽  
pp. e19303 ◽  
Author(s):  
Isamu Motoyoshi
Keyword(s):  
Contrast Sensitivity ◽  
Human Vision ◽  
Temporal Contrast ◽  
Attentional Modulation

scholarly journals Effects of mean luminance on goldfish temporal contrast sensitivity

1998 ◽  
Vol 38 (1) ◽  
pp. 55-59 ◽  
Author(s):  
Joseph Bilotta ◽  
Francesca M. Lynd ◽  
Maureen K. Powers
Keyword(s):  
Contrast Sensitivity ◽  
Temporal Contrast ◽  
Mean Luminance

Does L/M Cone Opponency Disappear in Human Periphery?

Perception ◽  
10.1068/p5374 ◽  
2005 ◽  
Vol 34 (8) ◽  
pp. 951-959 ◽  
Author(s):  
Kathy T Mullen ◽  
Masato Sakurai ◽  
William Chu
Keyword(s):  
Spatial Frequency ◽  
Contrast Sensitivity ◽  
Sine Wave ◽  
Human Vision ◽  
Peripheral Retina ◽  
Contrast Detection ◽  
Colour Contrast

We have assessed the optimal cone contrast sensitivity across eccentricity in human vision of the two cone-opponent mechanisms [L/M or red-green, and S/(L + M) or blue-yellow] and the luminance mechanism. We have used a novel stimulus, termed a ‘sinring’, that is a radially modulated sine-wave arc, Gaussian enveloped in both angular and radial directions. This stimulus overcomes the problem inherent in Gabor stimuli of confounding stimulus spatial frequency, size, and eccentricity and so allows contrast sensitivity to be tracked accurately into the periphery. Our results show that L/M cone opponency declines steeply across the human periphery and becomes behaviourally absent by 25–30 deg (in the nasal field). This result suggests that any L/M cone-opponent neurons found in primate peripheral retina beyond this limit are unlikely to be significant for colour contrast detection measured behaviourally.

Sign in / Sign up

Export Citation Format

Share Document