The Signal
Biometrics & Data
Biometrics & Data articles from The Signal by Sensor Bio.
Biometrics & Data
Fatigue monitoring biosensor selection: criteria for industrial workforce programs
Biometrics & Data
Single-lead ECG selection for cardiovascular studies: validation and data-access criteria
Biometrics & Data
HRV and inflammation: what your wearable can (and can't) tell you
Biometrics & Data
HRV Biofeedback: What It Is, How It Works, and the Research Behind It
Biometrics & Data
HRV in Women: How Hormones Shape Heart Rate Variability Across the Menstrual Cycle and Menopause
Biometrics & Data
Inflammation markers on a wearable: what's measurable, what isn't
Biometrics & Data
SpO2 Accurate at Night: Reference Ranges and Signal Context
Biometrics & Data
Low Heart Rate Variability Symptoms: What Your HRV Pattern Can and Cannot Tell You
Biometrics & Data
Post-Viral Dysautonomia: How Long COVID Affects the Autonomic Nervous System
Biometrics & Data
Multi-Wavelength PPG and Skin Tone Validation: What Fair Wearable Accuracy Requires
Biometrics & Data
PPG Waveform Features and Compensatory Reserve: What Optical Signals Reveal Under Hemodynamic Stress
Biometrics & Data
Cold plunge and HRV: what your wearable shows the morning after
Biometrics & Data
Fall detection science: accelerometer thresholds, context, and false-positive tradeoffs
Biometrics & Data
PPG beat detection algorithms: how peak timing becomes heart rate and HRV data
Biometrics & Data
Vagal Tone Meaning: What the Vagus Nerve Has to Do With HRV
Biometrics & Data
How to Improve Heart Rate Variability: What the Data Actually Shows
Biometrics & Data
Photoplethysmography (PPG): Principles, Signal Components, Derived Features, and Real-World Limits
Biometrics & Data