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Pobierz numer - Górnośląska Wyższa Szkoła Pedagogiczna

social well-being. Proper preventive and protection the state of health, developed due to the shift type ofmeasures are needed to mitigate adverse effects and help oc c u pational activity. Cardio-vascular disfunctions werea worker to overcome theme. Mainly, these measures detected in 24,4% cases, worsening of sleep and wakeshouldbe based on organization of shift schedules by fulness in 17,7%, metabolic changes in 13,3% [10-12]. Inergonomic criteria and proper medical surveillance. addition, the frequency of occurrence of selected types ofOccupational medicine, in the opinion of leading European tumors was noted [13,14].scientists, should carefully consider several factors (psy-Also, very few studies were devoted to the study ofchophysiological, pathological and social), which canpsychophysiological peculiarities of the effect of 24-hourinfluence on the tolerance and/or inadequate adaptation towork on operator’s health and professional reliability.such type of occupational activity [1].The results of literature analysis show that there is no indexIt is well known that a peculiar feature of modern available able to adequately characterize the reliability ofoperator’s activity is a sharp raise of information volume, the human activity, covering the whole range of accessibletime limit for execution of professional tasks, sliding work loads [10,15,16]. As a rule, the reliability of the activityschedule and other information factors, which, in their is assessed by the relation of the number of errors toturn, cause strengthening of neuro-emotional strain and the number of signals proposed for processing. There isdecrease the quality of occupational activity. There is a n u mb e r of la cks i n such estimation, because conditions,a number of work environment factors, which affect in which a mistake can occurs, are not taken into account innegatively human work capacity and increase the work this case. Also, conditions can be very different. Forstrain: low moving activity (hypodynamia); work mono- example, a mistake can be made, when there is short of timetony; long-term staying in the forced posture, leading to or when there is quite sufficient time for taking a decision.muscle tension in the neck, forearm and lumbar spine; Generally, these are quite different mistakes; however, ininformation stress factors; significant fatigue in operators, the formula for calculation of the reliability the mentionedcausing the decrease of high mental activity (НМА), and detail is not taken into consideration, causing rougheningothers [2-4].of the mentioned estimation. On the other hand, if weIt is known that in regulatory processes, occurring inrecord (make normative) any level of work reliability,the human body, the central nervous system (CNS) playssatisfactory for production, then, in the case of a classica dominating role; so, when analyzing human state theapproach to estimation of the reliability it is principallydegree of its functioning should be mostly assessed [5,6].impossible to learn, at what level of work intensity it isAs a rule, psychophysiological indices of the visualpossible to reach such level of reliability. The mentionedanalyzer are used as psychophysiological parameters,facts points to the need of searching new approaches tocharacterizing the state of the CNS, because the efficiencyassessment of an operator’s reliability in the combinedof work of many operator’s professions, depends, first ofaction of harmful factors of the work environment. So,all, on the level of its functioning [7].studies of psychophysiological peculiarities for providinga high level of reliability in operator’s work, based onAt present, investigators of many countries pay much development of a new approach to its assessment isattention to studying the effect of shift work on operators’ an actual direction in studies of modern occupationalwork. For examples, studies of operators have been health and physiology of work.conducted on the base of the «Control unit for crisissituations in the Russia Far East region» at 24-hour shiftPurpose of the work was to define psychophysiologicalwork. The following causes were mentioned, which hadpeculiarities of changes of work reliability in operatorsa negative effect in the work: first of all, fatigue of handand, basing on this, to develop integral indicators for itsfingers (14,1%), muscles of spine and neck (17,4%), eyesassessment, taking a long-term 24-hour load, as a model.(12,8%), attention decrease (10,2%) and sleepiness (8,0%)[8]. In the 24-hour shift work the presence of progressiveMaterials and methodsfatigue has been recorded in near 90% respondents.A group of men, operators-radiotelegraphers, (40 persons),When studying the efficiency of operators at the aged 18-23, was taken as a subject of the study, whocommanding-measuring unit in the 24-hour shift work by executed their professional duties within 24 hours. StudiesRussian scientists there gave been found negative changes of psychophysiological characteristics of these individualsof psychophysiological functions. The number of errors in00 00were conducted in the morning time (since 8 to 9 a.m.),operators, in tests for assessing speed parameters of mental before and after work.processes, as a result of a long-term work, increased. AndPsychophysiological characteristics were recorded, usingin that, the durability and switching of attention worseneda special hardware-software unit, designed in Kharkovin 24 hours by 2,3-4,5 times [9].National University of Radioelectronics [17,18]. MethodsEuropean scientists have established some disorders in for assessment of psychophysiological functions wereJEcolHealth, vol. 15, nr 3, maj-czerwiec 2011137

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