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. 2020 Sep 8;7:293. doi: 10.1038/s41597-020-00630-y

Table 3.

Data collected with each wearable device, with respective sampling rates and signal ranges.

Devices Collected data Sampling rate Signal range [min, max]
Empatica E4 Wristband 3-axis acceleration 32 Hz [−2g, 2g]
BVP (PPG) 64 Hz n/a
EDA 4 Hz [0.01 μS, 100 μS]
Heart rate (from BVP) 1 Hz n/a
IBI (from BVP) n/a n/a
Body temperature 4 Hz [−40 °C, 115 °C]
NeuroSky MindWave Headset Brainwave (fp1 channel EEG) 125 Hz n/a
Attention & Meditation 1 Hz [0, 100]
Polar H7 Heart Rate Sensor HR (ECG) 1 Hz n/a