Algorithms and Measures

Sleep

Sleep is the Subject of Increased Clinical Research, as Both a Primary Disorder and a Symptom of Another Disease

FDA-Cleared, Medical-Grade Wearables

Sleep

Inadequate sleep is common in people with arthritis, atopic dermatitis, Alzheimer’s Disease, Parkinson’s Disease, and many other conditions. Research studies focus on measuring and diagnosing these sleep disorders, as well as the development of new treatments to improve sleep health across a broad range of indications. ActiGraph’s technology solutions provide a low-burden and remote approach to objectively quantify real-world sleep habits and health, often revealing meaningful insights that might not be available with polysomnography or self report data.

Commonly Used SLEEP Measures

  •   Sleep Latency (SL)
  •   Total Sleep Time (TST)
  •   Wake After Sleep Onset (WASO)
  •   Sleep Efficiency (SE; SE = TST/Time in Bed)
  •   Circadian Rhythm

VITAL SIGNS SENSORS ACTIVITY MONITORS SOFTWARE
Measures Accelerometer PPG Wear Location Supported CentrePoint ActiLife 2
Sleep Efficiency (SE) 1 Wrist ALL
Sleep Fragmentation 1 Wrist ALL
Wake (WASO) 1 Wrist ALL
Total Sleep Time (TST) 1 Wrist ALL
Sleep Latency (SOL) 1 Wrist ALL
REM / Deep Sleep Wrist AG LEAP Q2 2024 2025
Daytime Sleepiness / Sustained Inactivity Bouts Wrist ALL

1. Integration of PPG data with CentrePoint available in 2024
2. Current versions of ActiLife use legacy algorithms developed for waist-worn data

VITAL SIGNS SENSORS
Measures Accelerometer PPG
Sleep Efficiency (SE) 1
Sleep Fragmentation 1
Wake (WASO) 1
Total Sleep Time (TST) 1
Sleep Latency (SOL) 1
REM / Deep Sleep
Daytime Sleepiness / Sustained Inactivity Bouts
VITAL SIGNS ACTIVITY MONITORS
Measures Wear Location Supported
Sleep Efficiency (SE) Wrist ALL
Sleep Fragmentation Wrist ALL
Wake (WASO) Wrist ALL
Total Sleep Time (TST) Wrist ALL
Sleep Latency (SOL) Wrist ALL
REM / Deep Sleep Wrist AG LEAP
Daytime Sleepiness / Sustained Inactivity Bouts Wrist ALL
VITAL SIGNS SOFTWARE
Measures CentrePoint ActiLife 2
Sleep Efficiency (SE)
Sleep Fragmentation
Wake (WASO)
Total Sleep Time (TST)
Sleep Latency (SOL)
REM / Deep Sleep Q2 2024 2025
Daytime Sleepiness / Sustained Inactivity Bouts

1. Integration of PPG data with CentrePoint available in 2024
2. Current versions of ActiLife use legacy algorithms developed for waist-worn data


ActiGraph

Pioneering the Digital Transformation of Clinical Research