Editing AI in Wearables (section)

== <span style="color: #FFFFFF;">Remembering</span> ==
* '''Smartwatch health monitoring''' — Consumer wearables (Apple Watch, Galaxy Watch) detecting health events using built-in sensors.
* '''PPG (Photoplethysmography)''' — Optical sensor measuring blood volume changes to estimate heart rate; used in most smartwatches.
* '''Accelerometer (wearable)''' — Measures body movement; used for step counting, activity classification, fall detection, sleep staging.
* '''ECG (single-lead)''' — Single-lead electrocardiogram from wearable patch or smartwatch; FDA-cleared for AFib detection.
* '''Atrial fibrillation (AFib) detection''' — The most widely deployed wearable AI diagnostic; Apple Watch, Fitbit, and Withings have FDA clearance.
* '''Continuous glucose monitoring (CGM)''' — Real-time blood glucose measurement via implanted sensor; Dexcom G7, Abbott Libre 3.
* '''Fall detection''' — Using accelerometer + gyroscope to detect sudden falls in elderly users; automatic emergency call.
* '''Sleep staging''' — AI classifying sleep phases (wake, light, deep, REM) from wrist accelerometry and heart rate.
* '''Resting heart rate variability (HRV)''' — A biomarker of autonomic nervous system function and recovery; tracked by many wearables.
* '''SpO2 (pulse oximetry)''' — Blood oxygen saturation estimated from optical sensor; COVID-19 monitoring use case.
* '''Digital biomarker''' — A physiological or behavioral signal from a digital device used as a health indicator.
* '''FDA De Novo / 510(k)''' — Regulatory pathways for wearable health AI; most AFib detectors cleared via De Novo.
* '''Cuffless blood pressure''' — Estimating blood pressure from PPG waveform without a cuff; active research, limited regulatory clearance.
* '''Seizure detection''' — Detecting epileptic seizures from wrist accelerometry (Empatica Embrace2, cleared by FDA).
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