Searched for: subject:"Space%5C+Perception"
(1 - 10 of 10)
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Koelewijn, T. (author), Bronkhorst, A. (author), Theeuwes, J. (author), TNO Defensie en Veiligheid (author)
There is debate in the crossmodal cueing literature as to whether capture of visual attention by means of sound is a fully automatic process. Recent studies show that when visual attention is endogenously focused sound still captures attention. The current study investigated whether there is interaction between exogenous auditory and visual...
article 2009
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Brouwer, A.-M. (author), Knill, D.C. (author), TNO Defensie en Veiligheid (author)
We investigated whether humans use a target's remembered location to plan reaching movements to targets according to the relative reliabilities of visual and remembered information. Using their index finger, subjects moved a virtual object from one side of a table to the other, and then went back to a target. In some trials, the target shifted...
article 2009
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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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Beintema, J.A. (author), Georg, K. (author), Lappe, M. (author)
The visual perception of human movement from sparse point-light walkers is often believed to rely on local motion analysis. We investigated the role of local motion in the perception of human walking, viewed from the side, in different tasks. The motion signal was manipulated by varying point lifetime. We found the task of coherence...
article 2006
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Bakker, N.H. (author), Passenier, P.O. (author), Werkhoven, P.J. (author), TNO Technische Menskunde (author)
The type of navigation interface in a virtual environment (VE) - head slaved or indirect - determines whether or not proprioceptive feedback stimuli are present during movement. In addition, teleports can be used, which do not provide continuous movement but, rather, discontinuously displace the viewpoint over large distances. A two-part...
article 2003
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van Erp, J.B.F. (author), Padmos, P. (author)
Indirect viewing systems such as tv cameras can potentially support drivers under low visibility conditions or when the driver's field of view (FOV) is restricted. In three experiments, we identified the critical image parameters of such systems on vehicle control. We used a taskbattery that measured lateral and longitudinal vehicle control in...
article 2003
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Bouman, M.A. (author)
In the model presented here, in the dark any single quantum absorption in a rod or cone produces a subliminal excitation. Subliminal excitations from both halves of a twin unit pair in the retina for the perception of light from the stimulus. A twin unit contains either two red or two green cones. The twin units are intertwined in triples of two...
article 2002
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Bouman, M.A. (author)
Thresholds for seeing light from a stimulus are determined by a mechanism that pairs subliminal excitations from both halves of a twin unit. Such excitations stem from a package of k ≥ 1 receptor responses. A half-unit contains one red or one green cone and P rods. The receptor's "Weber machine" controls the receptor's gain. Each half of a twin...
article 2002
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van Erp, J.B.F. (author), Oving, A.B. (author)
For multiple DOF systems, it is important to detemine how accurately operators can control each DOF, and what the influence of the perceptual, information processing and psychomotor components on performance is. Sixteen right-handed male students participated in 2 experiments: one involving positioning and one involving tracking with 3...
article 2002
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Theeuwes, J. (author), Kramer, A.F. (author), Atchley, P. (author), TNO Human Factors Research Institute (author)
Most accounts of visual perception hold that the detection of primitive features occurs preattentively, in parallel across the visual field. Evidence that preattentive vision operates without attentional limitations comes from visual search tasks in which the detection of the presence or absence of a primitive feature is independent of the...
article 1999
Searched for: subject:"Space%5C+Perception"
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