Neurobiological substrates of altered states of consciousness induced by high ventilation breathwork accompanied by music
Fig 1
MRI experimental design. pcASL = pseudo-continuous arterial spin labelling, displayed in bold as the primary imaging focus.
MPRAGE = 3D magnetization-prepared rapid gradient-echo, ASE = asymmetric spin-echo spiral, BOLD = blood oxygen level dependent, AP/PA anterior-posterior, posterior-anterior. BASELINE = 25 min 32s, breathwork = 23 min 10s. Relaxing music was played at BASELINE during rest for the participant, and evocative up-tempo music that features in breathwork sessions with instructions recorded by a breathwork facilitator were played during HVB.