BLE	Bluetooth Low-Energy
HR	Heart Rate
HRV	Heart Rate Variability
RR	Respiration Rate
RSA	Respiratory Sinus Arrhythmia
ST	Skin Temperature
EDA	Electrodermal Activity
PPG	Photoplethysmogramy
BVP	Blood Volume Pulse
ECG	Electrocardiogramy
EEG	Electroencephalogramy
EMG	Electromyography
FDA	Drug and Food Administration
TENS	Transcutaneous electrical nerve stimulation
tDCS	Transcranial direct current stimulation