Searched for: subject:"Perception"
(1 - 20 of 423)

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Langendijk, E.H.A. (author), Kistler, D.J. (author), Wightman, F.L. (author), TNO Technische Menskunde (author)
Localizing a target sound can be a challenge when one or more distracter sounds are present at the same time. This study measured the effect of distracter position on target localization for one distracter (17 positions) and two distracters (21 combinations of 17 positions). Listeners were instructed to point to the apparent position of a train...
article 2001
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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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Vladusich, T. (author), Lucassen, M.P. (author), Cornelissen, F.W. (author), TNO Defensie en Veiligheid (author)
article 2006
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Salomons, E.M. (author), Technisch Physische Dienst TNO - TH (author)
A fast and accurate ray model is developed for sound propagation in a downward refracting atmosphere. The model employs a new approach to the classification and computation of ray paths and caustic curves. The approach is valid for a large set of smooth sound-speed profiles, including realistic, nonlinear profiles such as the logarithmic profile...
article 1998
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Gerards, S.M.P.L. (author), Gubbels, J.S. (author), Dagnelie, P.C. (author), Kremers, S.P.J. (author), Stafleu, A. (author), de Vries, N.K. (author), Thijs, C. (author)
Background: Parents often fail to correctly perceive their children's weight status, but no studies have examined the association between parental weight status perception and longitudinal BMIz change (BMI standardized to a reference population) at various ages. We investigated whether parents are able to accurately perceive their child's weight...
article 2014
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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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Wertheim, A.H. (author), TNO Technische Menskunde (author)
This is a popularly written expose of what the profession of experimental psychol-ogy comprises. It is based on personal experience and is intended for a general readership of PhD students.
article 1995
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Bles, W. (author), Bos, J.E. (author), de Graaf, J.E. (author), Groen, E.L. (author), Wertheim, A.H. (author), TNO Technische Menskunde (author)
In reviewing the various forms of motion sickness the classical sensory rearrangement theory has been redefined by demonstrating that only one type of conflict is necessary and sufficient to explain all different kinds of motion sickness. A mathematical description is provided from the summarizing statement that "All situations which provoke...
article 1998
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Hoeksema-van Orden, C.Y.D. (author), Gaillard, A.W.K. (author), Buunk, A.P. (author), TNO Technische Menskunde (author)
In two experiments, 64 male students worked almost continuously for 20 hours without sleep, under varying social conditions. In experiment 1, participants worked either individually or as a group. As hypothesized, performance deteriorated over time, especially in the group condition, which allowed participants to loaf. In experiment 2, all...
article 1998
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Dobber, M.R. (author), Goede, A.P.H. (author), Burrows, J.P. (author), Technisch Physische Dienst TNO - TH (author)
The Global Ozone Monitoring Experiment (GOME) is a new instrument, which was launched aboard the second European Remoting Sensing satellite ESA-ERS2 in 1995. For its long-term radiometric and spectral calibration the GOME observes the sun and less frequently the moon on a regular basis. These measurements of the lunar radiance and solar...
article 1998
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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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Wilkinson, C. (author), Dijksterhuis, G.B. (author), Minekus, M. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Understanding the relationship between food texture perception and food structure is of increasing importance for companies wishing to produce texturally attractive food products. The perception of texture is a complex process involving the senses of vision, hearing, somesthesis and kinesthesis. Texture perception takes place partly during the...
article 2000
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Omboni, S. (author), Parati, G. (author), Castiglioni, P. (author), di Rienzo, M. (author), Imholz, B.P.M. (author), Langewouters, G.J. (author), Wesseling, K.H. (author), Mancia, G. (author), TNO Biomedical Instrumentation (author)
Portapres is a noninvasive, beat-to-beat finger blood pressure (BP) monitor that has been shown to accurately estimate 24-hour intra-arterial BP at normal and high BPs. However, no information is available on the ability of this device to accurately track ambulatory BP variability. In 20 ambulatory normotensive and hypertensive subjects, we...
article 1998
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Diels, C. (author), Bos, J.E. (author)
This paper discusses the predicted increase in the occurrence and severity of motion sickness in self-driving cars. Self-driving cars have the potential to lead to significant benefits. From the driver's perspective, the direct benefits of this technology are considered increased comfort and productivity. However, we here show that the envisaged...
article 2016
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Toet, A. (author), Tak, S. (author)
Previous research has shown that perceived facial valence is biased toward background valence. Here, we examine whether background dominance also affects perceived facial dominance. In particular, we hypothesized that downward-pointing triangles, which are known to convey threat, would affect perceived facial dominance. Participants judged...
article 2013
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Bos, J.E. (author), Bles, W. (author), TNO Technische Menskunde (author)
In an attempt to predict the amount of motion sickness given any kind of motion stimulus, we describe a model using explicit knowledge of the vestibular system. First, the generally accepted conflict theory is restated in terms of a conflict between a vertical as perceived by the sense organs like the vestibular system, and the subjective...
article 1998
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Vos, J. (author), TNO Technische Menskunde (author)
In a laboratory study, the annoyance caused by the passby sounds from a magnetic levitation (maglev) train was investigated. The listeners were presented with various sound fragments. The task of the listeners was to respond after each presentation to the question: "How annoying would you find the sound in the preceding period if you were...
article 2004
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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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Werkhoven, P.J. (author), Schraagen, J.M.C. (author), Punte, P.A.J. (author), TNO Technische Menskunde (author)
The visual component of conversational media such as videoconferencing systems communicates important non-verbal information such as facial expressions, gestures, posture and gaze. Unlike the other cues, selective gaze depends critically on the configuration of cameras and monitors. Under isotropic videoconferencing conditions people see each...
article 2001
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van Erp, J.B.F. (author), van Veen, H.A.H.C. (author), Ruijsendael, M. (author), TNO Defensie en Veiligheid (author)
Data show that spatial orientation in microgravity differs from that on Earth possibly facilitating space motion sickness and degrading performance. As a technology demonstration, we developed a Tactile Orientation Awareness Support Tool (TOAST) consisting of a vest with 56 vibrators. TOAST presents an artificial gravity vector by a localised...
article 2007
Searched for: subject:"Perception"
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