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Psychophysiological indices in six-to eight-year-old children under information load depending on anxiety as a stable individual characteristic

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Abstract

The study of psychophysiological indices in children aged six to eight years under information loads of various complexity showed that anxious subjects were characterized by a high level of nonspecific activation at rest and a shift of the autonomic balance towards a relative domination of the tone of the sympathetic division of the autonomic nervous system (ANS). The information load in the “auto-rate” mode caused in children aged six to eight years an increase in the level of nonspecific activation and the activity of sympathetic regulation and an inhibition of parasympathetic regulation. An information load in the “maximum rate of work” mode caused a decrease in the quantitative and qualitative indices of mental activity in comparison with that under comfortable conditions and a subsequent increase in autonomic shifts and the level of situational anxiety. The decrease in the efficiency of intellectual work performed at a maximum rate against the background of a high level of nonspecific activation and an increase in situational anxiety in both groups apparently reflected an increase in the activity of the modulating cerebral system due to the domination of the nonproductive activation system related to defensive behavior. At the same time, in children with a high personal anxiety, autonomic manifestations of activation and situational anxiety in both modes of work were more distinct and the efficiency of work lower than in subjects with a low anxiety. This indicates that, in anxious children, due to the excess activation of the sympathetic division of the ANS, the information load has a higher physiological cost. Thus, children with a high level of personal anxiety under intense information loads are characterized by a larger increase in the activity of the sympathetic division of the ANS and the attenuation of the effect of the parasympathetic division; a considerable increase in situational anxiety; low efficiency of activity; and, hence, its high physiological cost.

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  1. Kupala State University, Grodno, 230023, Belarus

    I. A. Krivolapchuk

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Original Russian Text © I.A. Krivolapchuk, 2006, published in Fiziologiya Cheloveka, 2006, Vol. 32, No. 6, pp. 13–21.

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Krivolapchuk, I.A. Psychophysiological indices in six-to eight-year-old children under information load depending on anxiety as a stable individual characteristic. Hum Physiol 32, 638–646 (2006). https://doi.org/10.1134/S0362119706060028

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