Taken from J. MARKLE, 1984
Plotting North Atlantic navigation track at UTA on DC-10 in 1990.
Checking navigation performance on ETOPS flight with Air France B767 in 1994
Observing crew activity alternation modes at UTA on DC-10 in 1990.
Validating Active / Passive crew alternation at Air France on A340 in 1994
Evaluating the effects of sleep inertia at Sabena on 340 in 2002
6.3. MONOTONY
6.3.1. DEFINITIONS
The alertness level can be greatly influenced both by the environment and by the activity of the subject himself.
The environment and the type of task determine the degree of monotony of the situation as it can be defined as "the characteristics of a task in which the sensorial stimulations remain almost constant and extremely repetitive". In fact, there are two concepts in the notion of monotony:
. the state of monotony,
. the monotonous nature of the task.
The state of monotony corresponds both to a subjective feeling and to physiological and psychological manifestations.
The subjective feeling manifests itself as boredom, as disinterest in the work to be done and as a feeling of drowsiness.
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本文链接地址：Getting to grips with Fatigue & Alertness Management(51)
