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A quantitative method to analyze mental work, such as programming or CAD operation, is discussed. The authors are proposing to define an index, named 'RRV', which is a variance of interval between successive R-spikes in E.C.G.(Electro Cardio Graph). In order to increase the measurement efficiency of RRV and to extend the time range of the measurement, a simple and handy-sized measuring unit is developed. From the result of experiments, it is proved that RRV is strongly connected with the condition of mental work. Under such intensive mental work as repetitive calculation for a long time, the value of RRV of the worker becomes lower than that under usual mental work. In addition, other basic characters of RRV, for example, the time-scale of its dynamic behaviour, are studied. Lastly, as a practical application, RRV is measured during computer programming, and several interesting phenomena are observed.
社団法人日本機械学会の論文
1985-11-25