[Performance- and strain-compensation with informatory work].

With results from literature it is shown that eye-blinking-rate is negative significant correlated with physiologic performance ability. Experiments with an abstract tracking task presented in this paper confirm that eye-blinking-rate is an indicator for activation. Taking in the indicator for activation (blinking-rate), tracking performance and central-physiological strain, phases of performance- and strain-compensation (stability, effort, fatigue, performance break-down) are defined in an hierarchical concept of stability. The compensatory processes of the human operator are discussed on the background of a stress-strain-concept taking account of the principle of feed-back.