Results 221 to 230 of about 144,053 (263)
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The influence of mental load on muscle tension
Ergonomics, 2013We examined the differences in muscle tension and in physiological measures depending on the type of mental task. Fifteen participants performed tests for sustained attention, vigilance and maintaining posture only. We analysed electromyogram (EMG) measures of extensor digitorum (ED), flexor carpi ulnaris (FU), deltoideus (DE) and trapezius (TR), and ...
D, Roman-Liu +3 more
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Spectral Analysis of Sinus Arrhythmia during Mental Loading
Ergonomics, 1975A technique is presented for digitally processing cardiac intervals to produce the low-pass filtered cardiac event sequence (LPFCES), a regularly sampled (in time) band-limited signal, representing in a standard form the information contained in the cardiac intervals. The technique takes into account the physiological mechanisms of information transfer
B W, Hyndman, J R, Gregory
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Mental Load and the Measurement of Heart Rate Variability
Ergonomics, 1973A number of studies concerning heart rate variability and mental load arereviewed It is concluded that in paced choice reaction tasks the number of reversal pointsin the cardiotachogram is the most sensitive measure of the load of the task.This measure was strongly correlated with respiration Spectral analysis of heart rate variability revealed the ...
MULDER, G +1 more
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IEEJ Transactions on Electronics, Information and Systems, 2011
Most of the traffic accidents have been caused by inappropriate driver's mental state. Therefore, driver monitoring is one of the most important challenges to prevent traffic accidents. Some studies for evaluating the driver's mental state while driving have been reported; however driver's mental state should be estimated in real-time in the future ...
Toshiyuki Yokoi +2 more
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Most of the traffic accidents have been caused by inappropriate driver's mental state. Therefore, driver monitoring is one of the most important challenges to prevent traffic accidents. Some studies for evaluating the driver's mental state while driving have been reported; however driver's mental state should be estimated in real-time in the future ...
Toshiyuki Yokoi +2 more
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1979
This paper aims to present an analysis of the concept of mental load from the point of view of human performance theory. In the first section the theoretical status of the concept of mental load is considered. It is concluded that it is based upon common sense, which cannot be supposed to be empirically founded in a simple way. Then an outline is given
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This paper aims to present an analysis of the concept of mental load from the point of view of human performance theory. In the first section the theoretical status of the concept of mental load is considered. It is concluded that it is based upon common sense, which cannot be supposed to be empirically founded in a simple way. Then an outline is given
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Sinusarrhythmia and Mental Work Load
1979Sinusarrhythmia is a variability in heart rate and this variability has been associated with respiration. In the last decade however, an increasing insight into the mechanisms underlying this phenomenon has been obtained, mainly by research effort of British investigators (Sayers, 1973, 1975; Kitney, 1972, 1974; Hyndman, 1974, 1975, 1976; see also ...
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Comparing the concepts of mental load and stress
Ergonomics, 1993This paper delineates mental load and stress as two related concepts that originate from different theoretical frameworks. A proper distinction between the two concepts is important, not only for theory building, but because it may lead also to different interpretations of experimental results, and, consequently, to different recommendations in applied
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Mental Load in Monitoring Tasks
1979In this paragraph I will briefly give the background of the Aviation Safety Research Office at NASA Ames to provide the viewpoint from which I will make the comments that follow. The ASRO has been set up to define operating problems in today’s aviation system and to suggest solutions that can be implemented in a relatively short time; a typical time ...
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Sinus Arrhythmia as a Measure of Mental Load
Ergonomics, 1974This experiment examines the proposition that sinus arrhythmia is a measure of mental load. The experiment involved a subtraction task in which the physical and mental loads could be varied independently. The results indicate that sinus arrhythmia does decrease with on increase in mental load.
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