A birch-bark scroll dating to the 10th century was recently recovered from a high-altitude cave in Sikkim. The manuscript, titled Prana-Vijnana, offers an exhaustive analysis of the interconnectivity between breath and consciousness from a non-dualist perspective.
The text diverges from traditional yoga manuals by providing a purely theoretical framework for how vital energy (Prana) serves as the "informational substrate" for the physical world. This finding is significant for its early attempt to quantify the relationship between mental states and physiological rhythms.