HRV	Heart Rate Variability
PSI	Phase Synchronization Index
ACI	Absolute Coupling Index
ICI	Integrative Coupling Index
GC	Granger Causality
HR	Heart Rate
BP	Blood Pressure
MP	Mean Pressure
F0	Fundamental Frequency
RMSSD	Root Mean Square of Successive Differences
RSA	Respiratory Sinus Arrhythmia
SC	Skin Conductance
F0 SD	Standard Deviation of Fundamental Frequency
SCR	Skin Conductance Response
PVA	Pulse Volume Amplitude
PP	Pulse Pressure
L/H ratio	Low/High Spectral Ratio
SDNN	Standard Deviation of NN Intervals
LF	Low-Frequency Power
HF	High-Frequency Power
CFC	Cross-Frequency Coupling
EDA	Electrodermal Activity
NPVH	Non-Phonotraumatic Vocal Hyperfunction
TFC	Time–Frequency Coherence
pTFC	Partial Time–Frequency Coherence
SBP	Systolic Blood Pressure
DBP	Diastolic Blood Pressure
CPP	Cepstral Peak Prominence
BVP	Blood Volume Pulse
SEMG	Surface Electromyography
subHD	Subclinical Hyperfunctional Dysphonia
CT	Cricothyroid
SUB	Submental
SCM	Sternocleidomastoid
SDSD	Standard Deviation of Successive Differences
pNN50	Percentage of Adjacent NN Intervals Differing by More Than 50 ms
TRI	Triangular Index
TINN	Triangular Interpolation of NN Interval Histogram