Encyclopedia of Computer Graphics and Games

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| Editors: Newton Lee

Stress Reduction, Relaxation, and Meditative States Using Psychophysiological Measurements Based on Biofeedback Systems via HRV and EEG

  • Jeffery Jonathan Joshua (ישוע) DavisEmail author
  • Robert Kozma
  • Florian Schübeler
Living reference work entry
DOI: https://doi.org/10.1007/978-3-319-08234-9_330-1


Psychophysiological coherence and cognition of inner peace and harmony


Electroencephalography, or EEG, is an electrophysiological monitoring device comprised of multiple electrodes (small, flat, metal discs with thin wires) placed on the scalp that send signals to a computer in order to noninvasively measure and record electrical activity on the scalp. EEG can be used in cognitive research or to diagnose conditions such as epilepsy and sleep disorders.

Heart rate variability (HRV) is a measure of the patterns prescribed by interbeat intervals of time and the functioning of the heart. HRV has been described as a psychophysiological biomarker to assess coherent or stressful states associated with respiration, cognition, and emotions (McCraty et al. 2009).

Psychophysiological coherence has been widely described as a state conducive to optimal cognitive performance and improved health (McCraty et al. 2009) that has also been associated to inner balance, peace, and...

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Jeffery Jonathan Joshua (ישוע) Davis
    • 1
    Email author
  • Robert Kozma
    • 2
  • Florian Schübeler
    • 1
  1. 1.The Embassy of PeaceWhitiangaNew Zealand
  2. 2.CLION, Department Mathematical SciencesUniversity of MemphisMemphisUSA