Table 10.

List of functions extracted from physiological signals that showed statistical significance in paired t-test analysis.

Modality	Statistical function	F value
	Maximum	2.72
Heart-rate	Mean	2.56
	Standard deviation	2.4
	Maximum	−3.04
Skin-Temperature	Standard deviation	−3.9
	Inter-quartile-range	−3.15
	Minimum	3.26
Electrodermal activity	Skewness	−4.9
	Kurtosis	−5.50
	Minimum	3.4
Accelerometer	Mean	3
	Mean frequency	−3.5
	Standard deviation frequency	−3.06
	nn50	2.17
Interbeat interval	pnn50	2.17
	sdnn	2.18
	VLF	−2.15
	LF	−2.66
	LF (nu)	−2.5

• nn50: The number of successive NN interval that differ by more than 50ms in the time-window (pre/post).

• pnn50: The percentage of successive NN interval that differ by more than 50ms in the time-window. Obtained by dividing nn50 by total number of NN intervals.

• rmssd: root mean square of successive differences between heartbeats in the time-window.

• sdnn: Standard deviation of NN intervals obtained from the time-window

• sdsd: Standard deviation of differences between consecutive NN intervals. All the NN intervals from the time-window are considered.

• VLF: Logarithmic of absolute power of very low frequency band (0–0.04 hz)

• LF: Logarithmic of absolute power of low frequency band (0.04–0.15 hz)

• HF: Logarithmic of absolute power of high frequency band (0.15–0.40 hz)

• LF/HF: LF power to HF power ratio

• LF(nu): Normalized absoluted power of low frequency band given by equation $\frac{LF}{IF+HF+VLF}$

• HF(nu): Normalized absoluted power of High frequency band given by equation $\frac{HF}{IF+HF+VLF}$