Target announcer voice detection by shcoolchildren of different psychophysiological status in case of vocal competition

Management of variability of the cardiac rhythm (VCR) is widely applied as a marker of psycho emotional state in educational institutions. This approach is suitable for testing properties of the pupils for the detection of vocal signals. The aim of the study was a comparative analysis of VCR as an objective parameter corresponded with psycho-emotional tension and acoustic perception of the speech in youngsters under sophisticated condition of the competition between vocal signals pronounced by different individuals. Methods. VCR was measured in 44 male and female youngsters 13–16 years old with the comparison of identification of competing acoustic signals – random sequences of words simultaneously pronounced by male or female voice. VCR analysis provided distinction the prevalence of sympathetic versus parasympathetic tone reflecting high or moderate level of psycho-emotional tension. Results. Identification of target words pronounced by female voice in subjects with prevalence of sympathetic or parasympathetic tone was correct in 96% and 87% respectively. Target words pronounced by the male voice were correctly identified in 88% cases in both groups. It is suggested that in primary schools where women compose majority of teachers, the developing juvenile brain imprints the corresponding acoustic wave band. Under the conditions of psycho-emotional tension these links are realized with maximal effectiveness.