Visual performance using reaction times

Rea, Mark S.; Ouellette, M.J.

doi:10.1177/096032718802000401

Cited by 71 publications

(58 citation statements)

References 12 publications

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“…An alternative explanation for the reduced visibility ofthe dark stimulus may be the fact that it depended mainly on off centre ganglion cells, which in the central field are less abundant than on centre ganglion cells (that is, in a ratio of approximately 1-2:3). Similar psychophysical differences between these two parallel visual pathways have previously been reported for foveal vision with regard to target detection rates and reaction times.23 24 In addition, electrophysiological differences between these two channels have been observed.2526 We are unaware of a previous report of perimetric asymmetries between on and off pathways. If the black perimetric stimulus is indeed testing the off pathway, it may prove to be superior to conventional luminous stimuli.…”

Section: Resultssupporting

confidence: 52%

“…Similar psychophysical differences between these two parallel visual pathways have previously been reported for foveal vision with regard to target detection rates and reaction times. 23 24 In addition, electrophysiological differences between these two channels have been observed. 2526 We are unaware of a previous report of perimetric asymmetries between on and off pathways.…”

Section: Discussionmentioning

confidence: 99%

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The dark perimetric stimulus.

Mutlukan

Damato

1992

British Journal of Ophthalmology

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We determined the disappearance eccentricities of dark and bright stimuli of equal size in the inferonasal central visual field using the oculokinetic perimetry technique at different levels of surrounding illumination. The results suggest that a dark stimulus on a bright background has a smaller 'isoptre' than an equally bright stimulus on a dark background, and that variation of ambient illumination and consequent alteration ofbackground luminance have less effect on the visibility of a dark stimulus than a bright one.

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Section: Resultssupporting

confidence: 52%

Section: Discussionmentioning

confidence: 99%

The dark perimetric stimulus.

Mutlukan

Damato

1992

British Journal of Ophthalmology

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“…Other researchers have, including Shlaer, whom they cite. Such studies of visual performance for fixed pupil sizes show that visual performance improves with higher light levels (e.g., Rea and Ouellette, 1988). In fact, the data reported by the authors in Figure 8 contradict, indirectly at least, their own conclusions.…”

mentioning

confidence: 85%

Luminance-Controlled Pupil Size Affects Landolt C Task Performance

Berman

Fein

Jewett

et al. 1993

Journal of the Illuminating Engineering Society

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Subjects judged the orientation of a 2 min. gap Landolt C located at a distance of 2.4 m. The stimuli were presented in central vision on a CRT, at low to medium contrast. The effects of varying the spectrum and luminance of surround lighting were assessed on both pupil size (measured using infrared pupillometry during task performance) and task accuracy. The task display was protected from the surround lighting, so that its luminance and contrast could be varied independently of the changes in the surround lighting. Indirect surround illumination was provided by . either two illuminants of very different scotopic spectral content but with the same · photopic luminance (Experiment 1 and 3 each), or by using the same illuminant at two different luminance levels (Experiment 2). In experiment 3, the effect of changing surround spectrum was compared to the effect of varying task background luminance between 12 cd/m2 and 73 cdfm2. In all experiments, scotopically enhanced surround lighting produced pupil areas which were reduced by almost 50% in comparison with surround lighting with relatively less scotopic luminance.Concomitantly there was improvement in Landolt C task performance with the scotopically enhanced surround lighting at all contrast and luminance levels. In these experiments, smaller pupil sizes were associated with significantly better visual-task performance in spite of lower task retinal illuminance when compared to the condition with larger pupils. These results suggest that changes in surround spectrum can compensate for the effect on task performance of a reduction in task luminance and supports the possibility that lighting energy savings can accrue in the workplace by shifting lamp spectra to obtain greater scotopic efficacy.

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“…Colombo, Kirschbaum, and Raitelli suggested that a fifth variable, blur, be added to the visual performance model. 21 Visibility measured using reaction times to a visual stimulus [22][23][24] and the time required to perform a number-checking task 20 have contributed to this understanding. Visibility is poor when the task luminance is low, but above a certain level of stimulation it quickly saturates.…”

Section: Biopsychological Processes In Lighting-behavior Relationshipmentioning

confidence: 99%

Lighting Quality Contributions from Biopsychological Processes

Veitch

2001

Journal of the Illuminating Engineering Society

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. Society, 30, 1, pp. 3-16, 2001-04-01 Lighting quality contributions from biopsychological processes Veitch, J. A. Journal of the Illuminating Engineering Lighting quality contributions from biopsychological processes Veitch, J.A.A version of this paper is published in / Une version de ce document se trouve dans :Journal of the Illuminating Engineering Society, v. 30, no. 1, 2001, pp. 3-16 www.nrc.ca/irc/ircpubs NRCC-42468© AbstractInternal processes, both biological and psychological, are thought to mediate the relationships between luminous conditions and such behavioral outcomes as task performance, mood, social behavior, aesthetic judgements and satisfaction. This review paper summarizes the state of knowledge concerning mediating biopsychological processes: visibility, photobiology, and stress and arousal. Visibility is well-understood and obviously relevant to lighting practice. Photobiology, however, is a new entrant to the realm of lighting research; its findings could have important implications for recommended illuminance levels if these were based on more than visibility. Stress and arousal, interrelated concepts, are popular notions, but close examination reveals only weak support for these mechanisms as explanations of lighting effects on behavior. The improved organization of research and increased predictive power that would result from clear exposition of theoretical mechanisms in lighting research holds promise for progress in linking research and application.Lighting Quality and Biopsychology / 2 Introduction Renewed interest in lighting quality emerged in the early 1990s, in parallel with the development of energy codes and standards. Lighting practitioners remembered the energy conservation strategies of the 1970s energy crisis, in which delamping reduced overall light levels and produced uneven distributions of light. Energy was saved, but lighting quality declined. Lighting designers of the day decried this simplistic approach to conservation and feared that similar strategies would occur again.1-3 Committees were struck by the major associations, and many conference sessions on lighting quality were convened.The definition of lighting quality most widely adopted in these discussions has been an emergent one, in which lighting quality is the degree of excellence achieved, in terms of meeting human needs 4 and integration of these outcomes with energy conservation and architecture.5 Veitch and Newsham...

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Visual performance using reaction times

Cited by 71 publications

References 12 publications

The dark perimetric stimulus.

The dark perimetric stimulus.

Luminance-Controlled Pupil Size Affects Landolt C Task Performance

Lighting Quality Contributions from Biopsychological Processes

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