Searched for: subject:"Perception"
(1 - 20 of 33)

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Meskers, A. (author), Houben, M.M.H. (author), Pennings, H.J.M. (author), Clément, G. (author), Groen, E.L. (author)
BACKGROUND:During large angles of self-tilt in the roll plane on Earth, measurements of the subjective visual vertical (SVV) in the dark show a bias towards the longitudinal body axis, reflecting a systematic underestimation of self-tilt. OBJECTIVE:This study tested the hypothesis that self-tilt is underestimated in partial gravity conditions,...
article 2021
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van den Hoed, A. (author), Landman, A. (author), van Baelen, D. (author), van Paassen, R. (author), Groen, E.L. (author), Mulder, M. (author)
Objective: We tested whether a procedure in a hexapod simulator can cause incorrect assumptions of the bank angle (i.e., the “leans”) in airline pilots as well as incorrect interpretations of the attitude indicator (AI). Background: The effect of the leans on interpretation errors has previously been demonstrated in nonpilots. In-flight,...
article 2020
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Landman, H.M. (author), Groen, E.L. (author), van Paassen, M.M. (author), Bronkhorst, A.W. (author), Mulder, M. (author)
Objective: A conceptual model is proposed in order to explain pilot performance in surprising and startling situations. Background: Today’s debate around loss of control following in-flight events and the implementation of upset prevention and recovery training has highlighted the importance of pilots’ ability to deal with unexpected events....
article 2017
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Mumaw, R.J. (author), Groen, E.L. (author), Fucke, L. (author), Anderson, R. (author), Bos, J.E. (author), Houben, M. (author)
Boeing saw the need for a valid, accessible tool that allows investigators to look at flight data and determine if spatial disorientation may have contributed to pilot control inputs.
article 2016
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Correia Grácio, B.J. (author), de Winkel, K.N. (author), Groen, E.L. (author), Wentink, M. (author), Bos, J.E. (author)
Without visual feedback, humans perceive tilt when experiencing a sustained linear acceleration. This tilt illusion is commonly referred to as the somatogravic illusion. Although the physiological basis of the illusion seems to be well understood, the dynamic behavior is still subject to discussion. In this study, the dynamic behavior of the...
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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Ledegang, W.D. (author), Groen, E.L. (author), Wentink, M. (author)
The aim of the collaborative European research project ‘Simulation of UPset Recovery in Aviation’ (SUPRA) is to develop breakthrough simulator technologies for teaching pilots to detect and recover from adverse flight upsets that could lead to unusual attitudes and loss-of-control. In the project, the high-performance research simulator...
conference paper 2011
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Groen, E.L. (author), Jansen, C. (author), van Erp, J.B.F. (author), van Veen, H.J. (author), TNO Defensie en Veiligheid (author)
Tactile displays provide information by applying local vibrations to the user's skin. The research organization TNO has developed a tactile torso display by implementing a number of pager motors, or “tactors” into a vest, allowing for the generation of spatio-temporal patterns. TNO carries out research into the usefulness of this tactile torso...
conference paper 2008
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Groen, E.L. (author), Wentink, M. (author), Trujillo, M. (author), Huhne, R. (author), TNO Defensie en Veiligheid (author)
Unsuccessful recovery from unusual flight attitudes, or “airplane upset”, is considered an important factor in civil aviation accidents. It is generally recognized that there is a clear need for enhanced training of recovery procedures from unusual flight attitudes, i.e. situations where an aircraft unintentionally exceeds the parameters of the...
conference paper 2008
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Nooij, S.A.E. (author), Bos, J.E. (author), Groen, E.L. (author), TNO Defensie en Veiligheid (author)
Prolonged exposure to hypergravity in a human centrifuge can lead to post-rotary spatial disorientation and motion sickness. These symptoms are mainly provoked by tilting head movements and resemble the Space Adaptation Syndrome. We hypothesized that the occurrence of these post-rotary effects might be related to changes in the velocity storage ...
article 2008
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Naseri, A. (author), Smaili, H. (author), Jansen, H. (author), Groen, E.L. (author), TNO Defensie en Veiligheid (author)
A set of experiments were conducted on the National Aerospace Laboratory (NLR) GRACE research flight simulation facility to determine the effects of sway, yaw and roll motion on perceived motion fidelity, motion perception, pilot workload and pilot compensation. Fourteen pilots were asked to perform a manual decrab maneuver when the aircraft was...
conference paper 2007
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Groen, E.L. (author), Smaïli, M.H. (author), Hosman, R.J.A.W. (author), TNO Defensie en Veiligheid (author)
In this flight simulator study, eleven pilots rated their motion perception during a series of decrab maneuvers of a twin-engine passenger aircraft. Simulator yaw, sway, and roll motion were varied independently to examine their relative contribution to the pilots’ judgments. In one set of conditions, the washout algorithms were bypassed so as...
article 2007
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Nooij, S.A.E. (author), Bos, J.E. (author), Groen, E.L. (author), TNO Defensie en Veiligheid (author)
article 2007
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Groen, E.L. (author), Wentink, M. (author), Valente Pais, A.R. (author), Mulder, M. (author), van Paassen, M.M. (author), TNO Defensie en Veiligheid (author)
Pilot perception models include detailed descriptions of the sensory dynamics involved in human spatial orientation. For example, the TNO Spatial Orientation model contains transfer functions of the visual and vestibular system (semicircular canals and otoliths). In our previous attempts to apply this model for the validation of simulator motion...
conference paper 2006
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Wentink, M. (author), Bos, J.E. (author), Groen, E.L. (author), Hosman, R. (author), TNO Defensie en Veiligheid (author)
The goal of this paper is to give an overview and some practical examples of the Motion Perception Toolbox developed by TNO (Netherlands Organization for Applied Research) as a freeware Matlab Simulink library. The MPT library provides a documented set of building blocks that model human perception and are easily coupled to existing simulation...
conference paper 2006
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Ellerbroek, J. (author), Stroosma, O. (author), Wentink, M. (author), Groen, E.L. (author), TNO Defensie en Veiligheid (author)
The three Dutch research institutes NLR, TNO and TU Delft are collaborating to perform a multi-simulator follow-up study aimed at investigating the influence of yaw and translational motion cues in helicopter- and general flight-simulation. In this study, new experimental results will be combined with pilot modeling. Two experiments will be...
conference paper 2006
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Groen, E.L. (author), Smaïli, M.H. (author), Hosman, R.J.A.W. (author), TNO Defensie en Veiligheid (author)
In this simulator study eleven pilots rated their motion perception during a series of decrab maneuvers of a twin-engine passenger aircraft. Platform yaw, sway, and roll motion were varied independently to examine their relative contribution to the pilots' judgements. In one set of conditions, the washout algorithms were bypassed so as to...
conference paper 2005
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Bos, J.E. (author), van Erp, J.B.F. (author), Groen, E.L. (author), van Veen, H.J. (author), TNO Defensie en Veiligheid (author)
This paper shows that tactile stimulation can override vestibular information regarding spinning sensations and eye movements. However, we conclude that the current data do not support the hypothesis that tactile stimulation controls eye movements directly. To this end, twenty-four subjects were passively disoriented by an abrupt stop after an...
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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Groen, E.L. (author), Hosman, R.J.A.W. (author), Bos, J.E. (author), Dominicus, J.W. (author), TNO Technische Menskunde (author)
Motion cueing algorithms are indispensable to transform aircraft motions into simulator motions. Usually, such algorithms apply to the whole flight envelope. Since a motion base should stay within its six degrees of freedom workspace, the parameter settings necessarily involve concessions, which may result in suboptimal motion cues for certain,...
conference paper 2004
Searched for: subject:"Perception"
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