CookiesWe use cookies to enhance your experience and the functionality of our website. By continuing to browse, you are agreeing to our use of cookies. Learn More

CookiesWe use cookies on our website. By continuing to browse, you are agreeing to our use of cookies. Learn More

New Inner Balance™ Coherence Plus Sensor and App: Includes Free Lifetime Access to the New HeartMath® App Learn More

Research Library

The Variation of Geometrical Shapes of Reconstructed Attractors of HRV Data Before, During and After the Heart Lock‑In® Experiment

    • Published: 2021
    • Inga Timofejeva1, Abdullah Alabdulgader2, Alfonsas Vainoras3, Rollin McCraty4, Mike Atkinson4, Vaiva Siauciunaite1, Roza Joffe5, and Minvydas Ragulskis1
    • Cardiol Vasc Res. 2021; 5(1): 1-4. ISSN: 2639-8486.1. Center for Nonlinear Systems, Kaunas University of Technology, Kaunas, Lithuania.2. Prince Sultan Cardiac Center, Al Hasa, Saudi Arabia.3. Institute of Cardiology, Lithuanian University of Health Sciences, Kaunas, Lithuania.4. HeartMath Institute, Boulder Creek, CA 95006, USA.5. Department of Public Health, Lithuanian University of Health Sciences, Kaunas, Lithuania.
    • Download the complete paper, click here.


The algorithm of geometrical synchronization based on the optimal reconstruction of embedded attractors from heart rate variability (HRV) data is employed to detect temporary coherence between participants before, during, and after the Heart Lock-In experiment. The pairwise geometrical synchronization between individual participants help to detect the average coherence of the group. Geometrical shapes of the embedded attractors do provide an insight into the complexity of HRV data.