IPER index: quantification of influence of noise on human performance through physiological, operational and psychological parameters.

摘要

The effect on human performance due to different kinds of noise (one stochastic noise and another carrying an informative content) is evaluated and compared to silent reference condition. The experiment involved 25 subjects (divided into two groups: age between 20 and 35 years and over 50). The influence of noise on the execution of a cognitive task (using the Stroop effect) is quantified through the measurement of three parameters: • physiological (heart rate), • operational (response time) • and psychological (questionnaires). A specific index is modelled and here described: the IPER index (index of influence on performance), permitting a direct comparison between the results of subjects in a weighted combination of all the parameters taken into account. Differences between diverse kinds of noises are highlighted and the validity of IPER experimented.