Searched for: subject%3A%22Perception%22
(1 - 20 of 59)

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Walraven, P.L. (author), Instituut voor Zintuigfysiologie TNO (author)
On the basis of new experimental data of tritanopic vision the convergence centre for tritanopia has been redetermined, and has turned out to bex' = 0.1747,y' = 0.0060 in the Judd 1951-chromaticity diagram. A consequence of this determination is that the blue system is more sensitive than was concluded from the Thomson-Wright (1953) study. The...
article 1974
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Kooi, F.L. (author), TNO Technische Menskunde (author)
When regions containing a counterphasing sine-wave grating are presented side by side and in spatial and temporal quadrature phase, a transparent perception of motion results. This occurs even though none of the stimulus parts is moving. The two percepts of motion in these displays are in opposite directions, one analogous to brightness contrast...
article 1995
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Bergmann Tiest, W.M. (author), Kosters, N.D. (author), Kappers, A.M.L. (author), Daanen, H.A.M. (author)
Phase change materials (PCMs) are increasingly incorporated in textiles in order to serve as a thermal buffer when humans change from a hot to a cold environment and the reverse. Due to the absence of wetness sensors in the skin, cooling of the skin may be perceived as a sensation of wetness instead of cold. In order to investigate if this...
article 2012
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Lammers, J.H.C.M. (author), Meuling, W.J.A. (author), Muijser, H. (author), Freidig, A.P. (author), Bessems, J.G.M. (author), TNO Kwaliteit van Leven (author)
The health risks of inhalation exposure to volatile organic solvents may not only depend on the total external dose, but also on the pattern of exposure. It has been suggested that exposure to regularly occurring peak concentrations may have a stronger impact on the brain than constant exposure at the same average level. Recent animal...
article 2005
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Teunissen, L.P.J. (author), de Haan, A. (author), de Koning, J.J. (author), Daanen, H.A.M. (author)
Physiological and perceptual effects of wind cooling are often intertwined and have scarcely been studied in self-paced exercise. Therefore, we aimed to investigate (1) the independent perceptual effect of wind cooling and its impact on performance and (2) the responses to temporary wind cooling during self-paced exercise. Ten male subjects...
article 2013
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de Winkel, K.N. (author), Clément, G. (author), Groen, E.L. (author), Werkhoven, P.J. (author)
Although the mechanisms of neural adaptation to weightlessness and re-adaptation to Earth-gravity have received a lot of attention since the first human space flight, there is as yet little knowledge about how spatial orientation is affected by partial gravity, such as lunar gravity of 0.16. g or Martian gravity of 0.38. g. Up to now twelve...
article 2012
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Walraven, J. (author), Instituut voor Zintuigfysiologie TNO (author)
article 1979
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Theeuwes, J. (author), Instituut voor Zintuigfysiologie TNO (author)
Two experiments were conducted which tested the effect of two different types of cues on the allocation of attention in the visual field. Subjects responded to a target appearing either 6.5° to the right or to the left of fixation in a field with small randomly positioned line segments. The target form was either a circle or diamond in which a...
article 1989
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Remoundou, K. (author), Brennan, M. (author), Sacchettini, G. (author), Panzone, L. (author), Butler-Ellis, M.C. (author), Capri, E. (author), Charistou, A. (author), Chaideftou, E. (author), Gerritsen-Ebben, M.G. (author), Machera, K. (author), Spanoghe, P. (author), Glass, R. (author), Marchis, A. (author), Doanngoc, K. (author), Hart, A. (author), Frewer, L.J. (author)
The EU Directive on the sustainable use of pesticides (EU128/2009/EC) requires European Member States to develop training activities targeting occupational exposure to pesticides, and communication material aimed at residents and bystanders. Risk perceptions, knowledge and attitudes associated with passive and occupational exposure to pesticide...
article 2015
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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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Liu, Y. (author), Toet, A. (author), Krone, T. (author), van Stokkum, R. (author), Eijsman, S. (author), van Erp, J.B.F. (author)
The affective appraisal of odors is known to depend on their intensity (I), familiarity (F), detection threshold (T), and on the baseline affective state of the observer. However, the exact nature of these relations is still largely unknown. We therefore performed an observer experiment in which participants (N = 52) smelled 40 different odors ...
article 2020
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Noble, M.E. (author), Sanders, A.F. (author), Instituut voor Zintuigfysiologie TNO (author)
An experiment is described in which subjects were required to search for familiar traffic signals. Half the time this was done while also engaged in a manual compensatory tracking task. The experimental variables of the visual search task were color, total number of signals exposed, the number of relevant signals, and the density of the signals....
article 1980
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Steijn, W.M.P. (author), van Kampen, J.N. (author), van der Beek, D. (author), Groeneweg, J. (author), van Gelder, P.H.A.J.M. (author)
Quantitative Risk Analysis (QRA) is a standard tool in some high-risk industries (such as the on- and offshore exploration and production and chemical industry). Presently, existing knowledge concerning human error likelihood and human reliability assessment is insufficiently represented in QRAs. In this paper we attempt to implement the...
article 2020
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Dijk, E.O. (author), Nijholt, A. (author), van Erp, J.B.F. (author), van Wolferen, G. (author), Kuyper, E. (author)
Stimulation of the tactile sense or the hearing sense can be used to improve a person's health and well-being. For example, to make someone relax, feel better or sleep better. In this position paper, we present the concept of auditory-tactile stimulation for health and well-being. Through carefully selected audio-tactile stimuli a person's...
article 2013
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Daanen, H.A.M. (author), van Ling, S. (author), Tan, T.K. (author)
Background: It has been shown that endurance performance after one night of sleep deprivation is not compromised despite the feeling of fatigue and that, in contrast, performance in the heat deteriorates even though people may feel good. However, it is essentially unknown how the estimation of performance capabilities relate to actual...
article 2013
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Toet, A. (author), Henselmans, M. (author), Lucassen, M.P. (author), Gevers, T. (author)
This study explores the effects of various spatiotemporal dynamic texture characteristics on human emotions. The emotional experience of auditory (eg, music) and haptic repetitive patterns has been studied extensively. In contrast, the emotional experience of visual dynamic textures is still largely unknown, despite their natural ubiquity and...
article 2011
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Theeuwes, J. (author)
Three visual search experiments tested whether top-down selectivity toward particular stimulus dimensions is possible during preattentive parallel search. Subjects viewed multielement displays in which two salient items, each unique in a different dimension—that is, color and intensity (Experiment 1) or color and form (Experiments 2 and 3)—were...
article 1991
document
Vos, J.J. (author), Estevez, O. (author), Walraven, P.L. (author), Instituut voor Zintuigfysiologie TNO (author)
New action spectra are derived for the foveal cones on the basis of three assumptions: (1) the Stiles-Burch (1959) colorimetric data are better than CIE 1931; (2) the long wavelength flanks of the dichromatic luminosity functions offer better anchorage than the confusion loci; and (3) the relative mutual heights per receptor can be derived from...
article 1990
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Korteling, J.E. (author)
Age-related differences in dual-task performance may be affected by factors such as skill integration and perceptual competition. Therefore these factors were examined in a dual-task experiment with young and older adults involving two one-dimensional compensatory tracking tasks. Single-task difficulty was individually adjusted for each subject....
article 1991
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Essens, P.J.M.D. (author), TNO Technische Menskunde (author)
Two stages for structuring tone sequences have been distinguished by Povel and Essens (1985). In the first, a mental clock segments a sequence into equal time units (clock model); in the second, intervals are specified in terms of subdivisions of these units. The present findings support the clock model in that it predicts human performance...
article 1995
Searched for: subject%3A%22Perception%22
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