Published October 07, 2026
Communications Biology (Nature Portfolio)
Study: LSD reconfigures cortical dynamics through faster brain rhythms and increased fractal dimension
This peer-reviewed study provides new evidence about how LSD changes the electrical activity of the human brain. Rather than simply increasing or decreasing brain activity, LSD appears to reorganize the speed, strength, and complexity of neural signaling.
Five most important findings
- LSD accelerates brain rhythms. Alpha oscillations increased in peak frequency by approximately 2 Hz, while beta oscillations increased by approximately 5 Hz. This may represent a distinctive electrophysiological signature of LSD.
- LSD weakens synchronized brain activity. Even after accounting for changes in oscillation frequency, researchers identified genuine reductions in alpha and beta oscillatory power.
- LSD increases neural complexity. Measurements of Lempel-Ziv complexity and Higuchi fractal dimension increased, suggesting that brain activity became more varied and less rhythmically constrained.
- Different brain networks respond differently. Sensory, language, emotion, and mental-imagery systems exhibited particularly pronounced changes, while motor networks were comparatively preserved.
- Music did not significantly amplify LSD’s neural effects. Exploratory findings suggested that music might actually reduce certain measures of neural complexity, potentially acting as an external attentional anchor. However, these interactions did not survive correction for multiple comparisons.
Study design
Participants
17
Healthy volunteers in an earlier LSD experiment
LSD dose
75 μg
Administered intravenously
Measurement
MEG
Magnetoencephalography
Comparison
LSD vs. placebo
With and without music
The researchers reanalyzed an existing dataset using advanced spectral analysis and machine-learning methods. Some models distinguished LSD from placebo with greater than 82% accuracy using peak-frequency features, although the small dataset limits generalizability.
Why this research matters
The study strengthens the scientific understanding of the psychedelic state by identifying potentially measurable neurophysiological biomarkers.
These findings could eventually contribute to research on psychedelic mechanisms, drug comparisons, and treatment-response monitoring. However, the study did not demonstrate that increased neural complexity produces improved mental health outcomes, nor did it establish clinical efficacy.
The small sample size, single-blind design, and reuse of previously collected data are important limitations.
Recommended PsyNews coverage
I would prioritize a science-focused article emphasizing the faster brain rhythms and increased complexity, rather than claiming that LSD improves brain function.
Suggested headline: New Nature Study Reveals How LSD Accelerates Brain Rhythms and Increases Neural Complexity
Suggested subheadline: Researchers identify distinct changes in the brain’s electrical activity under LSD, offering new insights into the neuroscience of psychedelic experiences.
A particularly interesting secondary angle is the finding about music, because it challenges the assumption that music necessarily intensifies every neurological effect of psychedelics.
Source: Subramani et al., Communications Biology, Volume 9, Article 1244 (2026).
DOI: 10.1038/s42003-026-10629-7
