Searched for: subject:"Psychomotor%5C+Performance"
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Berger, M.A.M. (author), Krul, A. (author), Daanen, H.A.M. (author), TNO Defensie en Veiligheid (author)
Finger dexterity tests are generally used to assess performance decrease due to gloves, cold and pathology. It is generally assumed that the O’Connor and Purdue Pegboard test yield similar results. In this experiment we compared these two tests for dry conditions without gloves, and for dry and wet conditions with two types of Nytril gloves. In...
article 2009
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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), Franz, V.H. (author), Gegenfurtner, K.R. (author), TNO Defensie en Veiligheid (author)
Where exactly do people look when they grasp an object? An object is usually contacted at two locations, whereas the gaze can only be at one location at the time. We investigated participants' fixation locations when they grasp objects with the contact positions of both index finger and thumb being visible and compared these to fixation...
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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Huysmans, M.A. (author), Hoozemans, M.J.M. (author), van der Beek, A.J. (author), de Looze, M.P. (author), van Dieën, J.H. (author), TNO Kwaliteit van Leven (author)
It has been suggested that fatigue affects proprioception and consequently movement accuracy, the effects of which may be counteracted by increased muscle activity. To determine the effects of fatigue on tracking performance and muscle activity in the M. extensor carpi radialis (ECR), 11 female participants performed a 2-min tracking task with a...
article 2008
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TNO Defensie en Veiligheid (author), van Vliet, S.A.M. (author), Jongsma, M.J. (author), Vanwersch, R.A.P. (author), Olivier, B. (author), Philippens, I.H.C.H.M. (author)
article 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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Hille, E.T.M. (author), Weisglas-Kuperus, N. (author), van Goudoever, J.B. (author), Jacobusse, G.W. (author), Ens-Dokkum, M.H. (author), de Groot, L. (author), Wit, J.M. (author), Geven, W.B. (author), Kok, J.H. (author), de Kleine, M.J.K. (author), Kollée, L.A.A. (author), Mulder, A.L.M. (author), van Straaten, H.L.M. (author), de Vries, L.S. (author), van Weissenbruch, M.M. (author), Verloove-Vanhorick, S.P. (author), TNO Kwaliteit van Leven (author)
OBJECTIVE. Young adults who were born very preterm or with a very low birth weight remain at risk for physical and neurodevelopmental problems and lower academic achievement scores. Data, however, are scarce, hospital based, mostly done in small populations, and need additional confirmation. METHODS. Infants who were born at <32 weeks of...
article 2007
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Toet, A. (author), Jansen, S.E.M. (author), Delleman, N.J. (author), TNO Defensie en Veiligheid (author)
Effects of field-of-view restrictions on the speed and accuracy of participants performing a real-world manoeuvring task through an obstacled environment were investigated. Although field-of-view restrictions are known to affect human behaviour and to degrade performance for a range of different tasks, the relationship between human manoeuvring...
article 2007
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Vuyk, J. (author), van den Bos, J. (author), Terhell, K. (author), de Bos, R. (author), Vletter, A. (author), Valk, P. (author), van Beuzekom, M. (author), van Kleef, J. (author), Dahan, A. (author), TNO Technische Menskunde (author)
Acute mountain sickness is thought to be triggered by cerebral hypoxemia and be prevented by acetazolamide (Actz). The effect of Actz on cerebral oxygenation at altitude remains unknown. In 16 members of the 2005 Dutch Cho Oyu (8201 m, Tibet) expedition, the influence of Actz and exercise (750 mg PO daily) on heart rate, peripheral and regional...
article 2006
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Alferdinck, J.W.A.M. (author), TNO Defensie en Veiligheid (author)
During night-time driving hazardous objects often appear at mesopic light levels, which are typically measured using light meters with a spectral sensitivity that is only valid for photopic light levels. In order to develop suitable mesopic models a target detection experiment was performed in a driving simulator. While subjects drove along a...
article 2006
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McKee, R.H. (author), Lammers, J.H.C.M. (author), Hoogendijk, E.M.G. (author), Emmen, H.H. (author), Muijser, H. (author), Barsotti, D.A. (author), Owen, D.E. (author), Kulig, B.M. (author), TNO Kwaliteit van Leven (author)
As a preliminary step to evaluating the acute neurobehavioral effects of hydrocarbon solvents and to establish a working model for extrapolating animal test data to humans, joint neurobehavioral/toxicokinetic studies were conducted which involved administering ethanol to rats and volunteers. The specific objectives of the present studies were to...
article 2006
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TNO Defensie en Veiligheid (author), van Vliet, S.A.M. (author), Vanwersch, R.A.P. (author), Jongsma, M.J. (author), van der Gugten, J. (author), Olivier, B. (author), Philippens, I.H.C.H.M. (author)
The vigilance-enhancing agent modafinil has neuroprotective properties: it prevents striatal ischemic injury, nigrostriatal pathway deterioration after partial transsection and intoxication with 1-methyl-1,2,3,6-tetrahydropyridine. The present study determines the protective effects of modafinil in the marmoset 1-methyl-1,2,3,6...
article 2006
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TNO Defensie en Veiligheid (author), van Vliet, S.A.M. (author), Jongsma, M.J. (author), Vanwersch, R.A.P. (author), Olivier, B. (author), Philippens, I.H.C.H.M. (author)
Rationale: Modafinil is increasingly used in sleep disturbances in general and in neurodegenerative diseases and is recently being used in healthy people for attention control. However, the application of modafinil is possibly not only restricted to alertness enhancing effects. More insight in this compound may lead to new applications. Not all...
article 2006
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Markus, C.R. (author), Jonkman, L.M. (author), Lammers, J.H.C.M. (author), Deutz, N.E.P. (author), Messer, M.H. (author), Rigtering, N. (author), TNO Kwaliteit van Leven TNO Voeding (author)
Background: Brain serotonin function is thought to promote sleep regulation and cognitive processes, whereas sleep abnormalities and subsequent behavioral decline are often attributed to deficient brain serotonin activity. Brain uptake of the serotonin precursor tryptophan is dependent on nutrients that influence the availability of tryptophan...
article 2005
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Vreugdenhil, H.J.I. (author), Emmen, H.H. (author), Mulder, P.G.H. (author), Weisglas-Kuperus, N. (author), TNO Voeding (author)
PCBs are known for their neurotoxic properties, especially on the developing brain. To increase insight into the neurotoxic effects of PCB exposure, the authors studied the effects of perinatal exposure to environmental levels of these compounds on different neuropsychological domains. In 9-year-old children of the Rotterdam PCB-dioxin cohort,...
article 2004
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Abel, S.M. (author), Crabtree, B. (author), Baranski, J.V. (author), Smith, D.G. (author), Thompson, M.M. (author), Steeneken, H.J.M. (author), Verhave, J.A. (author), Buckey, J.C. (author), Alvarenga, D.L. (author), Comtois, J.M. (author), TNO Technische Menskunde (author)
Introduction: Elevated hearing thresholds have been documented in some astronauts after long-term spaceflights although noise levels were lower than those normally associated with noise-induced hearing loss in ground-based operations. The present study was conducted to determine whether prolonged exposure (70 h) to levels (72 dBA) recorded on...
article 2004
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Valk, P.J.L. (author), van Roon, D.B. (author), Simons, M. (author), Rikken, G. (author)
Sustained vigilance is required by pilots and crew during flight; therefore, the use of antihistamines with sedating properties is widely prohibited. The purpose of this study was to determine the effects of desloratadine, a long-acting, nonsedating antihistamine, on healthy volunteers placed under conditions of simulated cabin pressure. Methods...
article 2004
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TNO Technische Menskunde (author), Martens, M.H. (author)
Two experiments investigated effects of expectations on eye fixations and responses to expected and unexpected information in a laboratory setting. Stimulus fixation and manual responses to predefined targets among distractors were measured in a dynamic environment shown on a monitor. Participants were part of either a predictable condition ...
article 2004
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TNO Kwaliteit van Leven (author), Huijbregts, S.C.J. (author), van Spronsen, F.J. (author), Licht, R. (author), de Sonneville, L.M.J. (author), Berends, I.E. (author), Verkerk, P.H. (author), Sergeant, J.A. (author)
This study examined motor control in 61 early and continuously treated patients with phenylketonuria (PKU) and 69 control participants, aged 7 to 14 years. The pursuit task demanded concurrent planning and execution of unpredictable movements, whereas the tracking task required a highly automated circular movement that could be planned in...
article 2003
Searched for: subject:"Psychomotor%5C+Performance"
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