Results 1 to 10 of about 436,026 (231)
The absolute threshold of colour vision in the horse. [PDF]
PLoS ONE, 2008 Arrhythmic mammals are active both during day and night if they are allowed. The arrhythmic horses are in possession of one of the largest terrestrial animal eyes and the purpose of this study is to reveal whether their eye is sensitive enough to see ...
Lina S V Roth +2 more
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The absolute threshold of cone vision. [PDF]
J Vis, 2011 We report measurements of the absolute threshold of cone vision, which has been previously underestimated due to suboptimal conditions or overly strict subjective response criteria. We avoided these limitations by using optimized stimuli and experimental conditions while having subjects respond within a rating scale framework.
Koenig D, Hofer H.
europepmc +5 more sources
Setting the absolute threshold of vision. [PDF]
F1000 Biol Rep, 2009 The performance of sensory systems in many cases is limited by the physical nature of the stimulus. For vision, the quantal nature of light limits detection by dark-adapted observers; only now are we beginning to be aware of the subtleties in the biophysical mechanisms underlying this exquisite sensitivity.
Sampath AP, Fain GL.
europepmc +6 more sources
Factor Analysis of Absolute Auditory Thresholds [PDF]
The Journal of the Acoustical Society of America, 1960 Graphic recordings were obtained of the absolute thresholds to a series of twenty (20) pure tones, in equal-mel steps from 200 to 6000 cps, in steps of 1 db. Each tone was pulsed on a 0.50 duty cycle with a 500-msec duration for a period of 30 sec. The equipment was carefully calibrated to yield thresholds in db SPL.
John J. O'Hare
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Development of absolute thresholds in chickens [PDF]
The Journal of the Acoustical Society of America, 1985 Absolute auditory thresholds were estimated in chickens at 0 and 4 days after hatching. Momentary suppressions of the chicks’ regular peeping, following the onset of a tone, were used as indications of stimulus detection. In the first experiment a staircase procedure was used to estimate thresholds. The absolute thresholds of both ages were the same at
Lincoln Gray, Edwin W. Rubel
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Scotopic acuity and absolute threshold in brief flashes [PDF]
The Journal of Physiology, 1962 Peter Hallett
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New approaches to the single-interval adjustment matrix yes-no task [PDF]
Frontiers in PsychologyTwo adaptations of the Single-Interval Adjust-Matrix Yes-No (SIAM-YN) task, designed to increase the efficiency of absolute threshold estimation, are described.
Daniel Shepherd, Michael J. Hautus
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Dynamics of the coefficient of variation of the age at death distribution [PDF]
Demographic Research, 2023 BACKGROUND: Indicators of lifespan inequality, such as the life table entropy or variance of age at death, provide a measure of inequality in the timing of death.
Jacob Martin +2 more
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Research on Relative Threshold of Abnormal Travel in Subway Based on Bilateral Curve Fitting
Mathematics, 2023 Abnormal passenger behavior in rail transit has become a top priority, as it affects operational safety. Passenger travel time is the main basis for identifying abnormal behavior while considering the flexibility of travel time.
Liang Zou, Ke Cao, Lingxiang Zhu
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Effects of infrasound on the perception of a low-frequency sound
Acta Acustica, 2023 The study investigated the effects of an 8 Hz infrasound sinusoid, presented at a sensation level (SL) of 9 decibels (dB), on the detection of i) a 64 Hz pure tone and ii) an 8 Hz sinusoidal amplitude modulation imposed on a 64 Hz sinusoidal carrier ...
Friedrich Björn +3 more
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