Effects of the degree of fluctuation on subjective preference for a 1 Hz flickering light.
Humans are believed to have a preferred amount of stimulus variation in their perceptual environment. Here, paired comparison tests were conducted to examine whether the fluctuation of a flickering light improves subjective preference. Sine-wave and bandpass noise acted as the light source. We have previously shown that the preferred temporal frequency of a flickering light without any fluctuation is approximately 1 Hz (Soeta et al 2002 Journal of the Optical Society of America A 19 289 - 294). This was used as the center frequency of the light source. The bandwidth was set at 1, 2, 4, 8, and 16 Hz, to control the amplitude of the first peak of the autocorrelation function, phi1. Results show that the preferred phi1 of a flickering light is 0.46.
Institute for Human Science and Biomedical Engineering, National Institute of Advanced Industrial Science and Technology, Midoriga-oka, Ikeda, Osaka 563-8577, Japan. y.soeta@aist.go.jp
Yoshiharu
Y
Soeta
Kazunobu
K
Mizuma
Yosuke
Y
Okamoto
Yoichi
Y
Ando
D000328:Adult; D006801:Humans; D007600:Judgment; D008029:Lighting; D010775:Photic Stimulation / Q000379:methods; D011601:Psychophysics; D013997:Time Factors; D014796:Visual Perception / Q000502:physiology*