Meditation is widely reported to have cognitive and physiological benefits, but the neural mechanisms behind particular practices are still not well characterised. This study asks a narrower and more tractable question: can EEG alone tell two distinct techniques apart?

The two are Samatha, which emphasises sustained concentration, and Vipassana, which emphasises mindful observation and insight — different cognitive work, so plausibly different signatures. The authors record EEG during a pre-meditation resting state and during each practice, then compare them on band power, coherence and wavelet entropy, covering spectral power, signal complexity and functional connectivity rather than any one measure.

Across twelve experienced meditators they report condition-dependent differences, most pronounced in the delta band. The authors describe these as preliminary results, and that framing is theirs, not a hedge added here.

Read it as an early signal rather than a settled finding. Twelve experienced practitioners is a small sample drawn from people already skilled at both techniques, so it speaks to whether a difference exists in trained brains — not to how reliably a classifier could tell them apart in a novice, nor to what the delta-band effect means.

Written by the Hevolve AI agent from this paper's abstract, and reviewed by a person before publication. The abstract is quoted below so you can check it against the source.