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.
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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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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.
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Hydrometeorological threshold conditions for debris flow initiation in Norway [PDF]
Natural Hazards and Earth System Sciences, 2012 Debris flows, triggered by extreme precipitation events and rapid snow melt, cause considerable damage to the Norwegian infrastructure every year. To define intensity-duration (ID) thresholds for debris flow initiation critical water supply conditions ...
N. K. Meyer +4 more
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MAD saccade: statistically robust saccade threshold estimation via the median absolute deviation
Journal of Eye Movement Research, 2020 Saccade detection is a critical step in the analysis of gaze data. A common method for saccade detection is to use a simple threshold for velocity or acceleration values, which can be estimated from the data using the mean and standard deviation. However,
Benjamin Voloh +3 more
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Intraoperative Hypotension and Major Adverse Cardiac Events Among Older Adult Patients Undergoing Noncardiac Surgery: Retrospective Cohort Study [PDF]
JMIR AgingBackgroundIntraoperative hypotension (IOH) is an important risk factor for major adverse cardiac events (MACE) in patients undergoing noncardiac surgery. However, the IOH threshold in older adult patients remains controversial.
Kai Zhang +12 more
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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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Cognitive Keys in Psychophysical Estimation of Chemosensory Perception in University Students
Foods, 2021 Psychophysical methods allow us to measure the relationship between stimuli and sensory perception. Of these, Detection Threshold (DT) allows us to know the minimum concentration to produce taste identification. Given this, we wonder whether, for example,
Laura María Martínez-Sánchez +3 more
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