Studien zur Theorie der Reizvorgänge

Pütter, August

doi:10.1007/bf01722090

Cited by 48 publications

(14 citation statements)

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“…FECHNER [8] hat solche Skalen direkt als Kennlinien der Beziehung nvischen Reiz und Empfindung verwandt. Die von ihm daraus abgeleitete MaDformel, nach der einer geometrischen Reizanderung nur eine arithmetische Empfindungsanderung folgt (WEBER-FECHNERsches Gesetz), ist jedoch schon bald als fur den unteren und oberen Reizstarke(Empfindungsstarke)-Bereich nicht gultig erkannt worden (PUTTER [12], von SCHELLING [13]…”

Section: Hoppeunclassified

Beiträge zur Psychophysik des Süßgeschmacks 1. Mitt. Aufgabenstellung und Untersuchungsmethoden

Hoppe

1980

Nahrung

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With a view to the solution of problems concerned with the consumer's acceptance of foods in which saccharose had been substituted, a discussion is opened on psychologic and physiologic aspects of the measurability of sensory stimulus-sensation relations. The classic method for measuring taste is the determination of the taste discrimination threshold which is also termed least discernible difference. In the lat years, the discrimination threshold has been determined and calculated mainly as the mean concentration (stimulus) difference resulting from the distribution of the tasters according to their efficiency (probit analysis). In contrast, the new method, which is described in detail, is based on the dependence of the probability of a perception of difference upon the intensity which is linear and represents the initial course of a stimulus-response curve. Differences in efficiency in the group of tasters, which is assumed to be homogeneous, are included in the variance of difference frequencies found. The control of the course of the test by sequential analysis and the binomial weighting of the probabilities obtained allow to perform calculations of the discrimination threshold which are largely free from systematic errors; this discrimination threshold is defined as the concentration difference that engenders the arbitrarily defined alternative probability of Pa = 0.75. To minimize the risk of overrating the measurement result, it is suggested to calculate in addition, on the basis of the binomial distribution, the confidence limits of the discrimination threshold. Furthermore, the constant stimulus method for determining the perception of two stimulus intensities of different sweetening agents is adapted, as to performance and calculation, to the new aspects in discrimination threshold determination.

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Section: Hoppeunclassified

Beiträge zur Psychophysik des Süßgeschmacks 1. Mitt. Aufgabenstellung und Untersuchungsmethoden

Hoppe

1980

Nahrung

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“…H e demon-strated that under certain conditions such a system shows overshoots and undershoots of chemical concentrations if the primary effect of a stimulus is a change in one or several reaction rates; changes in concentration are considered secondary. Puetter (1918) probably was the first to investigate the effects of reaction rate changes. Variations of Burton's concept have been applied successfully in the case of visual receptors, which are known to involve chemical reactions (Ranke; posthumously published by Keidel, 1961).…”

Section: P Amentioning

confidence: 99%

Nonlinear Rate Sensitivity of the Carotid Sinus Reflex as a Consequence of Static and Dynamic Nonlinearities in Baroreceptor Behavior*

Franz

1969

Annals of the New York Academy of Sciences

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“…Studies have shown that this law can be extended to most senses unless the initial stimulus is too close to a perception threshold [1][2][3]. Pütter [4] also pointed out that the approach was valid for an interval of mean intensities of stimuli, but not so for very weak or very strong stimuli.…”

Section: Basic Principlesmentioning

confidence: 99%

Difference Thresholds for the Perception of Sinusoidal Vertical Stimuli of Whole-Body Vibrations in Ranges of Amplitude and Frequency Relevant to Ride Comfort

Festa

Durm²,

Lünebach³

et al. 2020

Vibration

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Minor differences in the vibration characteristics of a vehicle may greatly influence the comfort experienced by the driver. Therefore, such characteristics are significant in the process of vehicle development. In this experimental study, just-noticeable differences were determined for sinusoidal vertical whole-body vibrations at the frequencies 1.3 Hz and 6.0 Hz, and for the vibration amplitudes 0.2 m/s², 0.5 m/s² and 1.2 m/s². The stimulation set up was realised using a test rig constituting a seating position similar to that in a real vehicle environment. A transformed one-up-three-down method, in conjunction with a two-interval forced choice procedure, was used to determine difference thresholds, in accordance with Weber’s Law, for 14 test subjects. Median relative difference thresholds in the range of 6.7% to 11.0% were observed, and were examined for statistical significance (α < 0.05) and practical importance on amplitude and frequency, with respect to this law. The results showed a frequency-dependence at the lowest vibration amplitude and an amplitude-dependence for both frequencies from a statistical point of view. However, the amplitude-dependence at 6.0 Hz was considered as negligible for practical use.

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Studien zur Theorie der Reizvorgänge

Cited by 48 publications

References 0 publications

Beiträge zur Psychophysik des Süßgeschmacks 1. Mitt. Aufgabenstellung und Untersuchungsmethoden

Beiträge zur Psychophysik des Süßgeschmacks 1. Mitt. Aufgabenstellung und Untersuchungsmethoden

Nonlinear Rate Sensitivity of the Carotid Sinus Reflex as a Consequence of Static and Dynamic Nonlinearities in Baroreceptor Behavior*

Difference Thresholds for the Perception of Sinusoidal Vertical Stimuli of Whole-Body Vibrations in Ranges of Amplitude and Frequency Relevant to Ride Comfort

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