Discrimination of light intensity variation
نویسندگان
چکیده
منابع مشابه
Infants' discrimination of intensity variation in multisyllabic stimuli.
Two groups of 5- to 11-month-old infants were tested for their ability to discriminate within-utterance intensity variations similar to those associated with linguistic stress. A visually reinforced discrimination procedure was used to determine sensitivity to increments in peak intensity for a final position, synthetic CVC syllable within either a bisyllabic (CVCVC) or a trisyllablic (CVCVCVC)...
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We show that human ability to discriminate the wavelength of monochromatic light can be understood as maximum likelihood decoding of the cone absorptions, with a signal processing efficiency that is independent of the wavelength. This work is built on the framework of ideal observer analysis of visual discrimination used in many previous works. A distinctive aspect of our work is that we highli...
متن کاملIntensity discrimination in forward masking.
A nonmonotonic intensity discrimination function was recently reported in which a midlevel hump occurred for 25-ms sinusoidal standards ranging from 20 to 100 dB SPL and presented 100 ms after an intense narrow-band noise forward masker [F.-G. Zeng et al., Hear. Res. 55, 223-230 (1991)]. This paper provides additional data on how the midlevel hump is affected by three factors of forward masking...
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This research had conducted to investigate light intensity effects on the lucky bamboo growth in Islamic Azad University, Abhar Branch. The experiment arranged as a complete randomized block design with five treatments (0.75, 1.14, 1.89, 2.29 and 4.09 mmol m-2 s-1) in ten replications. Results showed that 1.89 mmol m-2 s-1 had significant differences than other treatments. The higher level of r...
متن کاملA Theory of Visual Intensity Discrimination
1. A theory of visual intensity discrimination is proposed in terms of the photochemical events which take place at the moment when a photosensory system already adapted to the intensity I is exposed to the just perceptibly higher intensity I+DeltaI. Unlike previous formulations this theory predicts that the fraction DeltaI/I, after rapidly decreasing as I increases, does not increase again at ...
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ژورنال
عنوان ژورنال: Journal of the Illuminating Engineering Institute of Japan
سال: 1991
ISSN: 0019-2341,1349-838X,2185-1506
DOI: 10.2150/jieij1980.75.appendix_146