Glossary

Regulation is your nervous system's ability to be flexible, balanced, and coordinated, regardless of whether you're calm or activated.

Dysregulation is when the nervous system’s ability to be flexible, balanced, and coordinated breaks down and the system gets stuck, rigid, or collapses, regardless of whether you feel stressed or fine.

Nervous System Regulation Technique
A nervous system regulation technique is any practice or intervention designed to restore or maintain the nervous system's flexibility, balance, and coordination, particularly when it has become stuck, rigid, or collapsed (dysregulated).a

rPPG, remote photoplethysmography, is a non-contact technique for measuring physiological signals using a camera to detect subtle, color changes in skin caused by blood volume pulse variations as the heart beats. It's distinct from PPG (photoplethysmography), used by wearables such as Oura and Whoop, which requires a physical sensor (e.g., a pulse oximeter) touching the skin.

How rPPG works:

1. A camera captures video of a person's face or skin

2. Algorithms extract tiny color fluctuations (especially in the green channel) from regions of interest

3. Signal processing isolates the pulse waveform from noise (motion, lighting changes)

4. Physiological metrics are derived from that waveform