The general aim of this study was to create a comparative scale of different types of pain through different psychophysical methods and different samples. The psychophysical methods used were magnitude estimation and category estimation. The participants were 30 patients from different outpatient clinics, 30 physicians and 30 nurses. The results were: 1) cancer pain, myocardial infarction pain,...

The relationship between reading ability and psychophysical performance was examined to test the hypothesis that dyslexia is associated with a deficit in the magnocellular (M) pathway. Speed discrimination thresholds and contrast detection thresholds were measured under conditions (low mean luminance, low spatial frequency, high temporal frequency) for which psychophysical performance presumabl...

H. R. Blackwell (1952) investigated the influence of different psychophysical methods and procedures on detection thresholds. He found that the temporal two-interval forced-choice method (2-IFC) combined with feedback, blocked constant stimulus presentation with few different stimulus intensities, and highly trained observers resulted in the "best" threshold estimates. This recommendation is in...

Psychophysical length and width spatial interactions associated with a line target were measured in normal observers dichoptically and in observers with naturally acquired amblyopia to investigate the neural locus of end-stopped perceptive fields. Results show (1) interocular transfer of psychophysical end-stopping, flank-inhibition, and length and width summation; and (2) severe, but significa...

A probability weighting function w(p) for an objective probability p in decision under risk plays a pivotal role in Kahneman-Tversky’s prospect theory. Although recent studies in econophysics and neuroeconomics widely utilized probability weighting functions, psychophysical foundations of the probability weighting functions have been unknown. Notably, a behavioral economist Prelec (1998) axioma...

We describe in this article the developed software package. This package improves efficiency of non-destructive quality control system for monolithic structures. The need to create a comprehensive tool was justified. is capable solving complex problems, both at stage technological design and during construction production. In construction, atypical heterogeneous tasks often arise that must be s...

When probe tones are added to background sounds, the psychophysical detectability and the perception of the probe is influenced by the time delay from the onset of the background to the onset of the probe. In general, the shorter the time delay, the harder it is to detect the probe or to perceive the probe as a separate signal. This results, for example, in psychophysical overshoot phenomena in...

Contrast thresholds for the pattern electroretinogram (PERG) were measured using lock-in amplifier retrieval of the retinal signal and a swept contrast display. Contrast sensitivity functions (CSF) developed from these PERG contrast thresholds were compared with those established psychophysically under identical stimulus conditions. Whereas the PERG CSF showed a band-pass characteristic across ...

H. R. Blackwell (1952) investigated the influence of different psychophysical methods and procedures on detection thresholds. He found that the temporal two-interval forced-choice method (2-IFC) combined with feedback, blocked constant stimulus presentation with few different stimulus intensities, and highly trained observers resulted in the ‘‘best’’ threshold estimates. This recommendation is ...

In this paper, we propose a computational architecture of face recognition based on evidence from cognitive research. Several recent psychophysical experiments have shown that humans process faces by a combination of configural and component information. Using an appearance-based implementation of this architecture based on low-level features and their spatial relations, we were able to model a...