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Biofeedback in optimizing psychomotor reactivity: II. The dynamics of segmental α-activity characteristics

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Abstract

To estimate the EEG predictors of successful training in the voluntary control of psychomotor reactivity, 29 healthy young (aged 22.3 ± 1.5 years) musical performers were examined. The estimation was carried out in terms of segmental α-activity analysis using a biofeedback session as an example, simultaneously stimulating the EEG α rhythm and decreasing the muscle tone. On the first day of the study, the musicians followed instructions for the voluntary control of comfortable finger motor activity when performing musical passages for the right hand during a standard performance practice (without any use of an adaptive feedback). On the second day, the muscle tone and the power of the EEG α rhythm were voluntarily controlled in the context of a biofeedback technology. The analysis of the unsteady EEG segmentation showed that the dynamics of changes in the coherence and segmental characteristics of the α activity were the same for both effective biofeedback training and the standard successful performance practice: an increase in the α-rhythm coherence, an increase in the lifetime of α spindles, and a decrease in their amplitude variability. The results obtained are discussed in terms of the formation and dissociation of neuron ensembles in central mechanisms of optimal psychomotor functioning.

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Authors and Affiliations

  1. Research Institute of Molecular Biology and Biophysics, Siberian Branch, Russian Academy of Medical Sciences, Novosibirsk, 630117, Russia

    O. M. Bazanova, E. G. Verevkin & M. B. Shtark

Authors
  1. O. M. Bazanova
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  2. E. G. Verevkin
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  3. M. B. Shtark
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Original Russian Text © O.M. Bazanova, E.G. Verevkin, M.B. Shtark, 2007, published in Fiziologiya Cheloveka, 2007, Vol. 33, No. 6, pp. 44–49.

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Bazanova, O.M., Verevkin, E.G. & Shtark, M.B. Biofeedback in optimizing psychomotor reactivity: II. The dynamics of segmental α-activity characteristics. Hum Physiol 33, 695–700 (2007). https://doi.org/10.1134/S0362119707060059

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  • DOI: https://doi.org/10.1134/S0362119707060059

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