Table 2. Means ± standard deviations of respiration-uncorrected and respiration-corrected RSA indices, respiration measures, and HR for Still-Face Test episodes.

	Play	Still-Face1	Reunion1	Still-Face2	Reunion2
Test 1 (n = 23)
RSA (ms)	11.4±4.1	9.8±4.8	10.8±5.9
logRSA (log ms)	1.47±0.22	1.26±0.29	1.35±0.29
RSAc (ms)	12.0±1.8	10.0±1.7	11.3±3.1
logRSAc (log ms)	1.48±0.12	1.29±0.17	1.38±0.21
RSA/VT (ms/mL)	0.168±0.068	0.126±0.066	0.129±0.057
logRSA/VT (log ms/mL)	0.136±0.048	0.102±0.048	0.107±0.042
RSA/VTc (ms/mL)	0.172±0.028	0.134±0.033	0.136±0.026
logRSA/VTc (log s/mL)	0.139±0.020	0.108±0.022	0.112±0.020
TTOT (s)	1.31±0.17	1.43±0.14	1.34±0.16
VT (mL)	86.7±27.4	103.1±24.4	105.3±36.1
HR (b/min)	135.0±11.5	146.6±12.6	144.5±11.2
Test 1 and 2 (n = 16)
RSA (ms)	10.6±3.9	9.1±4.5	10.0±3.0	7.5±4.1	9.1±3.8
logRSA (log ms)	1.43±0.20	1.22±0.29	1.39±0.29	1.08±0.32	1.28±0.31
RSAc (ms)	10.5±1.4	8.8±1.5	10.1±1.32	6.6±2.7	8.7±2.5
logRSAc (log ms)	1.40±0.12	1.20±0.17	1.37±0.16	1.03±0.27	1.24±0.23
RSA/VT (ms/mL)	0.160±0.058	0.120±0.061	0.130±0.047	0.086±0.061	0.110±0.052
logRSA/VT (log ms/mL)	0.132±0.042	0.100±0.046	0.109±0.035	0.072±0.045	0.093±0.041
RSA/VTc (ms/mL)	0.153±0.029	0.115±0.030	0.124±0.022	0.080±0.051	0.105±0.044
logRSA/VTc (log ms/mL)	0.125±0.021	0.095±0.022	0.105±0.016	0.068±0.037	0.089±0.032
TTOT (s)	1.28±0.14	1.41±0.11	1.30±0.12	1.57±0.20	1.42±0.15
VT (mL)	81.4±19.6	94.9±22.6	94.5±26.7	108.9±21.5	102.3±26.4
HR (b/min)	137.4±10.5	147.1±12.5	142.3±10.2	152.1±15.5	149.3±16.4

Note: HR = heart rate; V_T = tidal volume; RSA = respiratory sinus arrhythmia; T_TOT = total respiratory cycle time; HR = heart rate; RSA/V_T = RSA normalized by V_T; c = adjusted for T_TOT; logRSA = logarithm(RSA+1); logRSA/V_T = logarithm(RSA/V_T)+1.