The Line Group Ltd

Michael McLeod

Director

Clinical Applied Research Paper

24 February 2026

Neural Reorganisation During Monroe Institute Hemi-Sync Inner Earth ‘Plant Kingdom’ Sessions A Multiscale EEG Analysis

Abstract

The Neural Reorganization: Plant Kingdom EEG Study explores the neural dynamics induced by the Monroe Institute's Hemi-Sync Inner Earth auditory protocol, with a focus on the Plant Kingdom session. This research employs a multiscale EEG analysis to examine the neural reorganization that occurs across multiple frequency bands (Theta, Alpha, Beta, Gamma) and brain regions during the auditory entrainment session.

The study investigates spectral power dynamics, entropy measures, cross-frequency coupling, and state-space reorganization to provide a comprehensive understanding of how environmental factors, such as auditory entrainment, influence brain activity. We explore how different brain states shift relative to baseline conditions (eyes-closed and eyes-open), with particular focus on power distribution, variability, and complexity in the neural signals.

Key findings from the study reveal:

  • Spectral Shifts: The Plant Kingdom session demonstrates significant shifts in power distribution, particularly in high-frequency activity (Beta and Gamma bands), with environmental modulation observed between Indoor and Outdoor conditions.
  • Cross-Frequency Coupling: Increased Phase-Amplitude Coupling (PAC) between Theta and Gamma/Beta bands, showing how different frequency bands interact and influence each other during environmental shifts.
  • Reorganization Velocity: State-space flux analysis highlights dynamic reconfiguration rates, with the indoor and outdoor environments inducing different patterns of neural state transitions.
  • Entropy and Temporal Stability: Temporal stability metrics suggest that neural states evolve differently in the Indoor and Outdoor settings, indicating that the system does not exhibit a continuous state but rather fluctuates between stable and reconfigured states.

This body of work contributes to a growing body of research on neural plasticity and environmental coupling, providing insights into how brain states are influenced by structured auditory stimulation and environmental context. The results establish a baseline reference for understanding neural reorganization in response to complex auditory entrainment and contribute to the broader exploration of how environmental factors affect brain dynamics.

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