Accession Number:

ADA422309

Title:

Functional Determination of the Operator State in the Interaction of Humans with Automated Systems

Descriptive Note:

Conference paper

Corporate Author:

NATIONAL CENTER OF HYGIENE SOFIA (BULGARIA) MEDICAL ECOLOGY AND NUTRITION

Report Date:

2003-10-01

Pagination or Media Count:

13.0

Abstract:

Psychophysiological and occupational research has considered the dependence of stress and lowered work satisfaction on work demands as basic. In this study, the authors observed a functional relationship between cognitive workload assessed by heart rate variability HRV and heart rate HR, and work stress measured with work-related psychosocial factors. The result is consistent with the result of Hockey et al., who reported a functional association between workload and work stress. The country of Bulgaria is in a transition period, and work activity is associated with difficulties in adaptation to new technologies, the necessity of acquiring new skills and knowledge, and working with new technologies, etc. The prolonged effect of work-related factors could induce an abnormal pattern of regulatory activity and could affect cardiovascular regulatory mechanisms parasympathetic function - Psub RSA, and baroreceptor modulation of heart rate - Psub THM. The functional dependence of cognitive demands and work satisfaction on vagal activity assessed by Psub RSA could promote future research on the association between cognitive workload, work stress, and performance in considering the role of Psub RSA as an indirect measure of performance and as a direct indicator of the cardiovascular protective function. Four groups of operators and one referent group participated in the study 99 telecommunications operators working with information technology systems, 96 military pilots from the Bulgarian Military Air Force, 61 computer operators from the petroleum construction and assembly industry, 57 air traffic controllers for Bulgarian civil air traffic, and 42 clerks who did not work with automated systems. The results of these field studies clearly indicate that operators are exposed to the effects of cognitive load and work stress factors that are a function of their interaction with an automated system. 4 tables, 49 refs.

Subject Categories:

  • Psychology
  • Anatomy and Physiology
  • Human Factors Engineering and Man Machine Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE