Table 5 Sensor-derived data – description of the data derived from sensors collected using the Everion wearable device
From: Modeling multiple sclerosis using mobile and wearable sensor data
Sensor | Data Type | Description | Unit |
|---|---|---|---|
PPG | Heart Rate | Number of heartbeats per minute (bpm). | bpm |
Blood Perfusion | Process of a body delivering blood to a capillary bed in its biological tissue. | – | |
Blood Pulse Wave | Indicator of shape and rhythmicity of the blood pulse wave. | – | |
Heart Rate Variability | Time between heartbeats. | ms | |
Respiration Rate | Number of breaths per minute (BPM). | BPM | |
ACC | Steps | Number of steps per day. | steps |
Activity | The intensity of motion. | – | |
Energy Expenditure | Amount of energy a person uses to complete bodily functions, from moving, breathing, digestion, and respiration. | kCal | |
TEMP | Skin Temperature | Temperature measured on the surface of the skin. | Degrees Celcius |
BAR | Barometric pressure | Altitude changes of the user while wearing the device. | Mbar |
EDA | Electrodermal activity | Describes changes in electrical conductivity of the skin. It is a measure of physiological arousal of the sympathetic nervous system. | kOhm |
