Autonomic nervous system and subjective ratings of strain in air-traffic control |
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Authors: | Collet C Averty P Dittmar A |
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Affiliation: | a Université de Lyon, Université Claude Bernard Lyon 1, CRIS EA 647—Mental Processes and Performance, 27, 29 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne Cedex, France b Centre National de la Navigation Aérienne 7, Rue Edouard Belin, 31055 Toulouse, France c Micro capteurs et Microsystèmes Biomédicaux, INSA Lyon. LPM, CNRS UMR 5511, 20, Avenue Albert Einstein, F-69621 Villeurbanne Cedex, France |
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Abstract: | The paper is aimed at studying the perceived strain in professional air-traffic controllers both through self-evaluation and physiological indicators from the autonomic nervous system (ANS). The number of aircraft to be monitored was the main independent variable and could evolve at random within 1 and 10. Five ANS variables were recorded continuously in 25 participants while they handled real traffic: skin potential, skin conductance, skin blood flow, skin temperature and instantaneous heart rate. The tonic level of each physiological variable was averaged to match the times spent monitoring a constant number of aircraft. After the session, participants reacted in compliance with the NASA-TLX rating scale. Subjective ratings and physiological values were closely correlated to the number of aircraft, especially when data were standardized thus reducing inter-subjects differences in baseline levels. Results provide objective information to prevent air-traffic controllers from overloaded situations as well as to improve passengers’ safety. |
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Keywords: | Air-traffic control Strain Physiological indicators Self-evaluation |
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