Problem

The Vibrational State (VS)—an intense, patterned form of whole-body vibratory interoception frequently reported at Out-of-Body Experience (OBE) onset—remains largely unmapped in mainstream neuroscience. Prevalence estimates vary widely across surveys, with some survey indicating up to 40 % of experiencer experience the VS. Indeed, the VS is repeatedly described by a substantial proportion of experiencers, making it a high-priority target if we want a mechanistic explanation of OBEs that provide a full picture of that state. Yet, to date, there is no widely accepted neurophysiological signature of the VS.

Technology

The SC-LAB approached the VS as a time-locked, inducible state and recorded it using high-density EEG (128- channels), enabling millisecond-resolution mapping of rapid state transitions and high-frequency activity. We pair these recordings with advanced spectral and cross-frequency analyses (including phase–amplitude coupling) to separate slow-wave gating dynamics from fast, local processing bursts, and to distinguish candidate VS signatures from non-specific relaxation, imagery, or artefact.

Outcomes and impact

Across pilot datasets, VS induction is associated with a reproducible increase in delta activity alongside elevated gamma power, with one of our preliminary studies reporting gamma components extending as high as ~250 Hz, and evidence for structured delta–gamma coupling—a profile that is atypical for ordinary rest and provides a concrete, testable physiological hypothesis for VS as a distinct brain–body state. This research constitutes a first step toward what is the first high-density effort to map the VS systematically, transforming a widely reported OBE-onset phenomenon into a quantifiable target for replication, source localisation, and next-stage fMRI validation.