Heart–Geomagnetic Coupling in Human Sleep Correlation Analysis of HRV and OMNI/AE/Dst Parameters Across 16 Nights (2006 Dataset)

This dataset and accompanying analysis explore the potential relationship between geomagnetic activity and human autonomic regulation during sleep.Sixteen overnight ECG recordings from the Kyoto-Polysomnographic Database were synchronized with minute-resolution space-weather parameters from NASA’s OMNI dataset (solar wind velocity, interplanetary magnetic field, dynamic pressure, AE and SYM-H indices, and Dst).Heart Rate Variability (HRV) metrics were computed in 5-minute non-overlapping windows, and Pearson cross-correlations were calculated for time lags of ±60 minutes.Results show no consistent or strong association between HRV parameters and electromagnetic indices, confirming the robust autonomy of cardiac regulation.A weak but reproducible negative tendency (r ≈ –0.08 ± 0.02) was observed between SDNN and Dst with a lag of approximately –20 minutes.