Searched for: subject%3A%22psychophysics%22
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Koijck, L.A. (author), Toet, A. (author), van Erp, J.B.F. (author)
Previous research has shown that odorants consistently evoke associations with textures and their tactile properties like smoothness and roughness. Also, it has been observed that olfaction can modulate tactile perception. We therefore hypothesized that tactile roughness perception may be biased towards the somatosensory connotation of an...
article 2015
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Erk, S.M. (author), Toet, A. (author), van Erp, J.B.F. (author)
This study investigated whether communication via mediated hand pressure during a remotely shared experience (watching an amusing video) can (1) enhance recovery from sadness, (2) enhance the affective quality of the experience, and (3) increase trust towards the communication partner. Thereto participants first watched a sad movie clip to...
article 2015
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Bergmann Tiest, W.M. (author), Dolfine Kosters, N. (author), Daanen, h.a.m. (author), Kappers, A.M.L. (author)
In daily life, people interact with textiles of different degrees of wetness, but little is known about the me-chanics of wetness perception. This paper describes an experiment with six conditions regarding haptic dis-crimination of the wetness of fabrics. Three materials were used: cotton wool, sponge-structured viscose and thin viscose. Two...
article 2012
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Toet, A. (author)
The predictions of 13 computational bottom-up saliency models and a newly introduced Multiscale Contrast Conspicuity (MCC) metric are compared with human visual conspicuity measurements. The agreement between human visual conspicuity estimates and model saliency predictions is quantified through their rank order correlation. The maximum of the...
article 2011
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Bergmann Tiest, W.M. (author), Dolfine Kosters, N. (author), Daanen, H.A.M. (author), Kappers, A.M.L. (author)
Conclusions •No advantage from dynamic touch ) sensation of wetness mostly thermal •Better discrimination in thinner material •No correlation with hand temperature
other 2011
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Lucassen, M.P. (author), Bijl, P. (author), Roelofsen, J. (author), TNO Defensie en Veiligheid (author)
We present psychophysical data on the perception of static colored noise. In our experiments, we use the CIE94 color difference formula to quantify the noise strength and for describing our threshold data. In Experiment 1 we measure the visual detection thresholds for fixed pattern noise on a uniform background color. The noise was present in...
article 2008
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Vladusich, T. (author), Lucassen, M.P. (author), Cornelissen, F.W. (author), TNO Defensie en Veiligheid (author)
article 2006
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Vladusich, T. (author), Lucassen, M.P. (author), Cornelissen, F.W. (author), TNO Defensie en Veiligheid (author)
How do induced brightness and darkness signals from local and remote surfaces interact to determine the final achromatic color percept of a target surface? An emerging theory of achromatic color perception posits that brightness and darkness percepts are computed by weighting and summing the induction signals generated at edges in a scene. This...
article 2006
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Zahorik, P. (author), Brungart, D.S. (author), Bronkhorst, A.W. (author), TNO Defensie en Veiligheid (author)
Although auditory distance perception is a critical component of spatial hearing, it has received substantially less scienti.c attention than the directional aspects of auditory localization. Here we summarize current knowledge on auditory distance perception, with special emphasis on recent research results. The summary will be structured...
article 2005
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Groen, E.L. (author), Bles, W. (author), TNO Technische Menskunde (author)
We examined to what extent body tilt may augment the perception of visually simulated linear self acceleration. Fourteen subjects judged visual motion profiles of fore-aft motion at four different frequencies between 0.04-0.33 Hz, and at three different acceleration amplitudes (0.44, 0.88 and 1.76 m/s2). Simultaneously, subjects were tilted...
article 2004
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Rodríguez-Sánchez, R. (author), Fdez-Valdivia, J. (author), Toet, A. (author), García, J.A. (author), TNO Technische Menskunde (author)
The goal of this paper is to analyze the relation between the visual distinctness and the priority assigned to the information in two di2erent progressive transmission schemes: the Set Partitioning in Hierarchical Trees (SPIHT) and the Rational Embedded Wavelet Image Coding (REWIC). SPIHT assigns priority based on the mean squared-error (MSE)...
article 2004
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Hogervorst, M.A. (author), Brenner, E. (author), TNO Technische Menskunde (author)
A common assumption in cue combination models is that small discrepancies between cues are due to the limited resolution of the individual cues. Whenever this assumption holds, information from the separate cues can best be combined to give a single, more accurate estimate of the property of interest. We examined whether information about the...
article 2004
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Groen, E.L. (author), Hosman, R.J.A.W. (author), Dominicus, J.W. (author)
In this psychophysical study, seven airline pilots reported on their perceived self-motion in response to variations of motion filter gains during a simulated takeoff. Each pilot participated both as pilot flying and pilot non-flying. In order to vary the gains of the simulated linear acceleration and the rotation independently, a "direct pitch"...
conference paper 2003
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Zagers, N.P.A. (author), Berendschot, T.T.J.M. (author), van Norren, D. (author)
We present evidence for the wavelength dependence of the directionality of light reflected from cone receptor cells (optical StilesCrawford effect): Blue light is more directional than red. According to the waveguide-scattering model of Marcos J. Opt. Soc. Am. A 15 , 2012 (1998), directionality is the sum of a waveguide component and a...
article 2003
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Delleman, N.J. (author), TNO Technische Menskunde (author)
At a press workstation eight industrial workers processed light-weight objects at six different combined adjustments of reach distance and working height. Working posture, workers' perceptions, and task performance were measured. Two recommendations were formulated in order to minimize the load on the musculoskeletal system: (1) the maximum...
article 2002
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Delleman, N.J. (author), Berndsen, M.B. (author), TNO Technische Menskunde (author)
At a VDU workstation professional touch-typing operators worked at eight different combined adjustments of visual target height and chair backrest inclination. Working posture, workers' perceptions and work performance were measured. Two conclusions were drawn. First, in order to minimize the load on the musculoskeletal system for touch-typing...
article 2002
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Toet, A. (author), Bijl, P. (author), Valeton, J.M. (author)
The TNO Human Factors Searchû2 image dataset consists of: a set of 44 high-resolution digital color images of different complex natural scenes, the ground truth corresponding to each of these scenes, and the results of psychophysical experiments on each of these images. The images in the Searchû2 dataset are a subset of a larger set that has...
article 2001
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Bijl, P. (author), Valeton, J.M. (author), TNO Technische Menskunde (author)
The characterization of electro-eptical system performance by means of the minimum resolvable temperature difference (MRTD) or minimum resolvable contrast (MRC) has at least three serious disadvantages: (1) the bar pattern stimulus is theoretically and practically unsuitable for 1-D or 2-D spatially sampled systems such as pixel-array cameras, ...
article 1998
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van Veen, H.A.H.C. (author), Werkhoven, P. (author), TNO Technische Menskunde (author)
As a three-dimensional object is moving through our world, we generally obtain a vivid impression of both its structure and its motion through space. The time-course of two-dimensional projections of the scene (optic flow) is important in conveying this three-dimensional information to us. The extent to which we can solve this specific inverse...
article 1996
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Theeuwes, J. (author), TNO Technische Menskunde (author)
The present studies investigated whether an isoluminant color change pops out, indicating that it can be detected preattentively in parallel. The results of Experi-ment 1 show that an abrupt color change presented on an equiluminant back-ground does not pop out. However, when the color change is accompanied by a small luminance change, it does...
article 1995
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