The influence of wrist tapping based on the author’s methodology on the dynamics of interhemispheric integration and “internal” rhythm in healthy adults

Abstract

The goal is to study the dynamics of the inter-hemispheric coherence coefficient of the cortex according to the main rhythms of the electroencephalogram before and after the BOS-therapy based on the wrist tapping on the author’s method and the effect of subclinical anxiety on the characteristics of wrist tapping in healthy adults.Materials and methods. The conduct of this study was approved by the ethical committee of KrasSMU. prof. V. F. Voyno-Yasenetsky (protocol No. 77/2017 dated June 26, 2017).The study was conducted in two stages. The first stage is the study of standards and the influence of wrist tapping according to the author’s method on the characteristic of the “internal” rhythm in healthy adults without anxiety and with subclinical anxiety (n1 = 60). The second stage is the study of the influence of wrist tapping according to the author’s method on the coefficient of hemispheric coherence in the frontal areas of the cerebral cortex in healthy volunteers (n2 = 63). Study of wrist tapping was carried out using the original technique (RF patent № 2606489 from 10.01.2017). Anxiety level testing was performed using a scale (HADS hospital anxiety and depression scale [1]). Analysis of interhemispheric coherence in Fp1 — Fp2, F3 — F4, T3 — T4 pairs was performed using a computer encephalographic complex (Neurokartograf, MBN Moscow).Results and discussions. The main characteristics of the “internal” rhythm according in healthy adults are statistically significant depending on the absence or presence of subclinical anxiety (1.13 Hz vs. 1.53 Hz, respectively). According to the author’s method, wrist tapping statistically significantly reduces the coefficient of interhemispheric coherence in Fp1-Fp2, F3-F4, C 3-C 4 pairs located above the convexital surface of the frontal cortex, which can be used as a method of non-pharmacological correction of anxiety disorders in the future.Conclusion. Subclinical anxiety affects the indicators of the “internal rhythm”, which is studied using wrist taping according to the author’s method. Wrist tapping in healthy adults leads to a decrease in the interhemispheric integration of frontal cortex neurons and interhemispheric coherence coefficients in beta1- (predominantly) and alpha rhythms, without affecting the coefficients of coherence in theta rhythm. Wrist tapping according to the author’s method is a promising option for BOS-therapy in adults to reduce the level of anxiety in normal and pathological conditions.