The relationship between psychomotor efficiency and selected personality traits of people exposed to noise and vibration stimuli

Physical factors of an environmental nature are taken into account during testing risks in the workplace of machine operators. The influence of these factors on the human body has both physiological and functional effects. Among the environmental factors vibration and noise are the most frequently observed. The power and scope of impact of noise and vibration stimuli depend largely on individual differences of human. The worth mentioned differences resulting from both the body structure, the specificity of the nervous system and the level of fitness, as well as differences in the psychological sphere.In this article, the pilot studies with participation of 30 young man are described. The experimental studies were conducted in the laboratory. The importance of certain personality traits and characteristics for perceptual efficiency level under the impact of increased noise and vibration stimuli was tested.The experimental conditions were based on the theory of H.J. Eysenck, according to which basis of scheme of human action are the inborn properties of the central nervous system, determining the balance between the process of stimulation and inhibition. During experimental studies, participants were subjected to the influence of local and whole body vibration in the low frequency range. Participants were also subjected to the cumulative effect of these vibrations with noise. They performed the original test used to assess their motor skills, which consists in converting by participants, in the shortest possible time, the movement of cursor along the path displayed on monitor. The number of exits out of the path and the time remaining cursor on the path was registered. The collected data were used to determine the correlation between accuracy in performing actions, physiological parameters and the level of extraversion - introversion as a model of personality of experiment participants under the influence of noise and vibration.