This technical report records EEG from a single healthy five-year-old across five listening conditions: resting quietly, three chants (Shiv Tandav Stotra, Mahasudarshan Mantra, and Aum), and the drone of a tanpura. The analysis uses spectral power together with functional connectivity measured by the weighted Phase Lag Index.

Two things are worth being clear about. It is one participant, so this is a pilot that can suggest where to look and cannot establish anything general. And the weighted Phase Lag Index is chosen for a specific reason: it is designed to discount the spurious coupling that appears when two electrodes pick up the same source, so apparent connectivity is less likely to be an artefact of the recording.

What the report offers is condition-specific modulation of neural oscillations, meaning the brain's rhythms looked different depending on what was playing. That is a starting point rather than a conclusion, and the write-up presents it as one.