Physiological Parameters of Mental Load

Ettema, J. H.; Zielhuis, R. L.

doi:10.1080/00140137108931232

Cited by 57 publications

(16 citation statements)

References 1 publication

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“…Sinusarrhythmia (SA): there are several methods to score SA, giving sometimes different results For this study we used the handscoring method as described by Ettema ( 1967), Kalsbeek ( 1967Kalsbeek ( , 1968 and Ettema and Zielhuis ( 1971) With this method the index for SA in rest will be about 10-20.…”

Section: Mental Loadmentioning

confidence: 99%

II. Extra-auditory effects in short-term exposure to aircraft and traffic noise

Mosskov

Ettema

1977

Int. Arch Occup Environ Heath

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Summary A series of human studies was performed in 12 young healthy male subjects to investigate extra-auditory effects of short-term ( 15 min) exposure to aircraft noise ( 84-91 d B(A)), to traffic noise (Leq 83 5 d B(A)), to mental load, and to combined load (noise + mental load) Exposure to noise caused increase of diastolic blood pressure and respiratory rate, decrease of pulse pressure and quotient of heart rate/respiratory rate and also decrease of performance in a mental task Aircarft and traffic noise generally induce similar effects, which go into the same direction as induced by mental performance alone Combined exposure induces a stronger (but not additive) effect on diastolic blood pressure and respiratory rate than each condition alone There is suggestive evidence that exposure to noise and performance of an information processing task both induce simultaneous increase of sympathic and parasympathic tone.

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Section: Mental Loadmentioning

confidence: 99%

II. Extra-auditory effects in short-term exposure to aircraft and traffic noise

Mosskov

Ettema

1977

Int. Arch Occup Environ Heath

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“…Three subjects, kept awake 90 hr, reportedly did not show any remarkable performance decrements until about the 72nd hour, at which V time they began falling into involuntary micro-sleep periods after which their performance wild immediately improve. Still, many early studies on sleep deprivation failed to find significant performance decline, until a minimum of 36 hr of sleep deprivation, and often a maximum [60][61][62][63][64][65][66][67][68][69][70][71][72] In 1937, Warren and Clark (208) used addition and subtraction and colornaming tests (similar to those of Bills) to measure blo:ks, latency, and accuracy during 65 hr of sleep deprivation. Blocking was found to increase greatly after a period of prolonged sleeplessness, but the usually employed measures of error scores and RT showed no relationship to sleep loss.…”

Section: Performance Decrement and Sleep Deprivationmentioning

confidence: 99%

Fatigue Stressors in Simulated Long-Duration Flight. Effects on Performance, Information Processing, Subjective Fatigue, and Physiological Cost

Perelli¹

1980

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“…Often, sudden changes in breathing rate and volume result in autonomic nervous system responses that may mask true effects resulting from changes in the manipulated variable (Stern, Ray, & Davis, 1980). For instance, the interaction of respiration and heart rate is well known (e.g., Ettema & Zielhuis, 1971;Scher, 1965). Also, Stern and Anschel (1968) documented the effects of breathing amplitude on heart rate, finger pulse volume, and skin resistance.…”

Section: Introductionmentioning

confidence: 99%

“…Metrics that directly reflect respiratory activity have (Ettema & Zielhuis, 1971;Mulder & MulderHajonides van der Meulen, 1973), instrument-monitoring tasks (Gaume & White, Note 2), driving tasks (Casali, 1981;Lisper, Laurell, & Stenig, 1973), and aircraftpiloting tasks (Casali & Wierwille, 1982;Rahimi & Wierwille, 1982;Sun, Keane, & Stackhouse, 1976;Wierwille & Connor, 1983;Smit & Wewerinke, Note 3). However, in many of these and other psychophysical studies, respiration parameters are not the sole responses of interest.…”

Section: Introductionmentioning

confidence: 99%