Mesopic visual efficiency I: detection threshold measurements

Achromatic thresholds are measured at three sites to investigate the effects of light spectrum on achromatic detection thresholds in the mesopic region. The results of measurements using quasi-monochromatic targets reveal spectral sensitivity functions with two or three peaks, a so-called `chromatic effect' which is assumed to be due to the influence of the colour-opponent channels. This chromatic contribution seem to be less significant at lower luminances but it is accentuated for peripheral observation. Results obtained with broadband stimuli show that the contrast threshold, defined in terms of V(λ), is markedly higher for red targets than for other colours, particularly at lower light levels. For these broadband targets, contrast threshold values calculated using the new spectral sensitivity curves instead of V(λ) are in better agreement with the experimental results, particularly for the peripheral detection task.

[1]  P. King-Smith,et al.  Luminance and opponent-color contributions to visual detection and adaptation and to temporal and spatial integration. , 1976, Journal of the Optical Society of America.

[2]  Marjukka Eloholma,et al.  New Model for Mesopic Photometry and its Application to Road Lighting , 2006 .

[3]  Thomas K. Kuyk,et al.  Spectral sensitivity of the peripheral retina to large and small stimuli , 1982, Vision Research.

[4]  P. King-Smith,et al.  Detection of coloured stimuli by independent linear systems , 1979, Vision Research.

[5]  Peter Zsolt Bodrogi,et al.  Mesopic models—from brightness matching to visual performance in night-time driving: a review , 2005 .

[6]  Priv.-Doz. Dr. med. habil. Eberhart Zrenner.  Neurophysiological Aspects of Color Vision in Primates , 1983, Studies of Brain Function.

[7]  B H Tsou,et al.  Spectral sensitivity for flicker and acuity criteria. , 1988, Journal of the Optical Society of America. A, Optics and image science.

[8]  K. Mullen,et al.  Differential distributions of red–green and blue–yellow cone opponency across the visual field , 2002, Visual Neuroscience.

[9]  Neurophysiological Aspects of Color Vision in Primates: Comparative Studies on Simian Retinal Ganglion Cells and the Human Visual System , 1982 .

[10]  Marjukka Eloholma,et al.  Mesopic visual efficiency III: Discrimination threshold measurements , 2007 .

[11]  P. Lennie,et al.  Chromatic mechanisms in lateral geniculate nucleus of macaque. , 1984, The Journal of physiology.

[12]  S. Schwartz.  Dependence of visual latency on wavelength: predictions of a neural counting model. , 1995, Journal of the Optical Society of America. A, Optics, image science, and vision.

[13]  L. Rüttiger,et al.  Influence of Luminance Flicker and Purity on Heterochromatic Brightness Matching and Hue Discrimination: A Postreceptoral Opponent Process , 1997, Vision Research.

[14]  Peter Zsolt Bodrogi,et al.  Mesopic visual efficiency IV: a model with relevance to nighttime driving and other applications , 2007 .

[15]  D. W. Heeley,et al.  Cardinal directions of color space , 1982, Vision Research.

[16]  P. Orreveteläinen,et al.  Mesopic visual efficiency II: reaction time experiments , 2007 .

[17]  I. R. Moorhead,et al.  Discrimination and detection thresholds: The effect of observer criterion on the spatial properties of chromatic and achromatic mechanisms , 1982, Vision Research.

[18]  J. J. Vos,et al.  On the derivation of the foveal receptor primaries. , 1971, Vision research.

[19]  Pieter Padmos,et al.  Increment spectral sensitivity and colour discrimination in the primate, studied by means of graded potentials from the striate cortex , 1975, Vision Research.

[20]  A. Stockman,et al.  The spectral sensitivity of the human short-wavelength sensitive cones derived from thresholds and color matches , 1999, Vision Research.

[21]  D. Macleod,et al.  Spectral sensitivities of the human cones. , 1993, Journal of the Optical Society of America. A, Optics, image science, and vision.

[22]  Liisa Halonen,et al.  Visibility of coloured targets at low light levels , 2003 .

[23]  R. Harwerth,et al.  Red-Green Cone Interactions in the Increment-Threshold Spectral Sensitivity of Primates , 1971, Science.