Measurements concerning the usability or safety of optical equipment are based on assumptions regarding luminous efficiency. The current luminous efficiency functions are derived from human sensitivity experiments taken at low light levels compared to the outdoor daytime environment. The amount of error induced by extrapolating from low light level data to high light level applications is not known. We sought to determine whether standard luminous efficiency curves CIE V(gamma) and ...
Two psychophysical measurement techniques, flicker photometry and successive heterochromatic brightness matching, were used to measure changes in luminance efficiency functions with increasing levels of light adaptation. Both measurement techniques were performed using the same optical system and the same seven healthy adults as subjects. Measurements were taken at four reference stimulus intensities, 1, 10, 100 and 1000 foot-lamberts. Luminous efficiency was found to depend on both the technique and the ...
The purpose of this study was to more thoroughly determine how spatial disparity effects saccadic reaction times to dual, auditory and visual, stimuli. In addition I sought to find out how spatially disparate the stimuli could be while maintaining evidence for neural summation. I had the long term goal, once I had demonstrated the legitimacy of technique, of mapping fields of multisensory neural summation.
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