Delta (2-4 Hz) Power
Delta Rule
Calm & Relaxed rewards higher frontal and posterior Delta, which is the signature frequency band of deep sleep. Delta is the frequency of rest, repair, and regeneration. Higher Delta across the whole brain facilitates deep, restorative relaxation (Davis et al. 2011).
Delta Weights
Level 1 meditators are assigned a rule weight of 0, while Level 2 meditators are assigned a rule weight of +1. Delta training is added once a strong Alpha is built to stay awake but relaxed.