scholarly journals Coding accuracy on the psychophysical scale

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Lubomir Kostal ◽  
Petr Lansky
Keyword(s):  
Psychophysical Scale

Judging and Regulating Force in Sports: The Psychophysical Scale as a Tool for Putting Shots

2015 ◽  
Vol 6 (3) ◽  
pp. 154-169 ◽  
Author(s):  
Bo Molander ◽  
Carl-Johan Boraxbekk ◽  
Andreas Stenling ◽  
Elisabet Borg
Keyword(s):  
Psychophysical Scale

Constructing rationals through conjoint measurement of numerator and denominator as approximate integer magnitudes in tradeoff relations

2021 ◽  
Vol 44 ◽  
Author(s):  
Jun Zhang
Keyword(s):  
Number Sense ◽  
Conjoint Measurement ◽  
Rational Representation ◽  
Psychophysical Scale

Abstract To investigate mechanisms of rational representation, I consider (1) construction of an ordered continuum of psychophysical scale of magnitude of sensation; (2) counting mechanism leading to an approximate numerosity scale for integers; and (3) conjoint measurement structure pitting the denominator against the numerator in tradeoff positions. Number sense of resulting rationals is neither intuitive nor expedient in their manipulation.

An Arousal Interval Scale: A Psychophysical Scale for GSR Analysis

1978 ◽  
Vol 47 (3) ◽  
pp. 747-756
Author(s):  
Patricia Brodsky ◽  
Marvin Brodsky
Keyword(s):  
Empirical Studies ◽  
Interval Scale ◽  
Review Of The Literature ◽  
Physical Measurement ◽  
Scale Method ◽  
Initial Values ◽  
Base Level ◽  
Hypothetical Construct ◽  
Psychophysical Scale

An interval scale method of measuring GSR is presented, which measures only deflections without correction for base level. The scale is derived from psychophysics. A distinction is made between the psychological meaning a GSR is given and its physical measurement. This paper asserts, on the basis of empirical studies, that GSR measures the hypothetical construct arousal. Therefore, scales of physical units are unjustified. A review of the literature finds that GSR does not conform to Wilder's (1962) Law of Initial Values. Therefore, an interval scale assuming base level as a “zero” of convenience is justified. Extensions of the use of such an interval scale are discussed.

Construction Of A Psychophysical Scale Of Visual Comfort of Lighting Based On A Neural Network: preparation Of The Experiment

2021 ◽  
pp. 114-122
Author(s):  
Vladimir P. Budak ◽  
Ekaterina I. Ilyina
Keyword(s):  
Neural Network ◽  
Research University ◽  
Confusion Matrix ◽  
Roc Curves ◽  
Arbitrary Distribution ◽  
Final Conclusion ◽  
Visual Comfort ◽  
Numerical Scale ◽  
Engineering Department ◽  
Psychophysical Scale

One of the important questions in lighting engineering is to determine the sensation of discomfort from lighting installations. There is no unified psychophysical scale for assessing the visual comfort of lighting (VCL) at any arbitrary distribution of luminance in space. This article considers a mathematical model of the scale based on a neural network (NN) as an ‘expert’ that trained to determine the comfort of perception of lighting depending on the light source’s luminance and background. The experimental data obtained at the lighting engineering department of the National Research University “MPEI” were used to train the NN. The experiment results presented in this article are consistent with the numerical scale for estimating the VCL proposed by Lakiesch and Holladay. A new model allows predicting the sensation of VCL with an accuracy of up to 70 %. This work allows formulating criteria for NN’s input and output parameters to choose a metric for evaluating NN’s performance, such as the confusion matrix, ROC curves, and a metric, such as the probability distribution for each sensation depending on the input parameters. It clearly follows, that amount of initial data is not allowed to make a final conclusion. One more experiment required considering the algorithm used to calibrate the experimental installation, instructions for observers, and the obtained results processing.

Psychophysical scale of perception levels in neuromuscular electrical stimulation (NMES)

2013 ◽  
Vol 5 (3) ◽  
pp. 279-283 ◽  
Author(s):  
Manuel Albornoz-Cabello ◽  
Julián Maya-Martín ◽  
Jose Vicente Toledo-Marhuenda ◽  
Gabriel Dominguez-Maldonado ◽  
María del Mar Sánchez-Joya ◽  
...  
Keyword(s):  
Electrical Stimulation ◽  
Neuromuscular Electrical Stimulation ◽  
Psychophysical Scale

scholarly journals The Method of Psychophysical Scale Constructing for Assessing the Conditions of the Studied Object

2019 ◽  
pp. 70-78
Author(s):  
Oleg V. Babak ◽  
◽  
Igor V. Surovtsev ◽  
Olexey E. Tatarinov ◽  
Valentina M. Galimova ◽  
...  
Keyword(s):  
Psychophysical Scale

Declines in Wavelength Discrimination and Shifts in Unique Hue with Hypoxia

2020 ◽  
Vol 91 (5) ◽  
pp. 394-402
Author(s):  
Andrew Bierman ◽  
Tim LaPlumm ◽  
Mark S. Rea
Keyword(s):  
Sea Level ◽  
Cognitive Performance ◽  
Color Vision ◽  
Opponent Color ◽  
Wavelength Discrimination ◽  
Unique Hues ◽  
Unique Green ◽  
And Shifts ◽  
Psychophysical Scale ◽  
Color Channels

INTRODUCTION: Hypoxia can be a problem for warfighters, compromising visual and cognitive performance. One area of study has been hypoxia-induced decrements in color vision.METHODS: The present study examined how hypoxia affected the perception of wavelengths associated with unique green and with unique yellow as well as discriminability by the blue vs. yellow (b-y) and the red vs. green (r-g) spectrally opponent color channels while breathing O2 levels found at sea level and at 5500 m. Measurements of wavelengths producing unique green (minimizing response by the b-y channel) and unique yellow (minimizing response by the r-g channel) preceded measurements of wavelength discriminability near those unique hues.RESULTS: Relative to sea level, unique yellow shifted to shorter wavelengths (0.54 nm) and unique green shifted to longer wavelengths (2.3 nm) under hypoxia. In terms of an equal psychophysical scale, both unique hues shifted by similar magnitudes. Wavelength discriminability of both color channels was compromised by statistically reliable amounts of 16–17% under hypoxia.DISCUSSION: These results were consistent with previous studies and the inference that postreceptor, M-cone neurons were differentially compromised by hypoxia. However, these measurable changes in color vision due to hypoxia were not perceived by the subjects.Bierman A, LaPlumm T, Rea MS. Declines in wavelength discrimination and shifts in unique hue with hypoxia. Aerosp Med Hum Perform. 2020; 91(5):394–402.

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