Disintegration of Default Mode: Functional MRI Insights Into N,N-Dimethyltryptamine (DMT), Consciousness, and Subcortical Connectivity.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing neuroimaging literature without original human data or systematic methodology
PubMed 40881567 · doi:10.7759/cureus.88931
What was done
This paper reviewed functional magnetic resonance imaging (fMRI) and electroencephalography-fMRI (EEG-fMRI) studies examining the neural correlates of N,N-Dimethyltryptamine (DMT) administration and altered conscious states.
What was found
The abstract reports no numerical values, sample sizes, or effect estimates. Qualitatively, it reports that DMT is associated with disruption of default mode network (DMN) connectivity, reduced modular cortical hierarchy, heightened global integration, and increased activity in subcortical structures including the thalamus, amygdala, and hippocampus.
Why it matters
The review synthesizes current functional imaging perspectives on DMT, conceptualizing consciousness as a flexible network process rather than a static entity localized to specific brain regions.
Limits
As a narrative review, it presents no primary experimental data, quantitative meta-analytic pooling, or structured systematic search criteria. The abstract does not specify study populations, dosing protocols, or sample sizes.