No shared brain signature links DMT trips and near-death states
The result: No shared brain signature appeared in the tested DMT EEG data; stronger test needs high-density paired data.
What it means: The tested brain recordings show no specific shared signature between DMT experiences and near-death states beyond what shared vocabulary and generic altered-state effects already explain. The popular "DMT model of the NDE" gets no support at this resolution.
What it is NOT: Not a disproof of any DMT-NDE connection, because the available recordings are low-density and a stronger test needs paired high-density data with validated NDE scoring. Not a claim about chemistry, because only electrical brain data was tested.
Next test that could settle it: High-density DMT/ketamine EEG with validated NDE scoring.
Open question: Do DMT and NDE reports share a specific signal beyond vocabulary and generic altered-state content?
Receipts (exact limits and evidence records)
Claim ceiling (the strongest sentence this evidence supports): No shared signature detected at tested resolution.
Question: Q-DMT-NDE-BRIDGE
Evidence grade: G1_BOUNDED_NULL
Evidence records: ART-055