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Table 2 Time features from raw and envelope CBFV signals

From: Cognitive tasks during walking affect cerebral blood flow signal features in middle cerebral arteries and their correlation to gait characteristics

 

Raw

Evvelope

R-MCA

L-MCA

R-MCA

L-MCA

Standard deviation

 B

0.13 ± 0.10

0.13 ± 0.08

3.77 ± 1.01b

4.03 ± 1.13b

 C

0.15 ± 0.10

0.14 ± 0.08

5.02 ± 1.62b

5.44 ± 1.36b

Skewness

 B

(−4.99)a ± 0.02

(−1.52)a ± 0.01

−1.03 ± 0.74

−0.80 ± 0.76

 C

(7.15)a ± 0.02

(−0.11)a ± 0.03

−1.22 ± 0.82

−1.07 ± 0.75

Kurtosis

 

 B

4.38 ± 2.74

5.08 ± 3.31

5.50 ± 3.95

4.73 ± 3.13

 C

4.51 ± 1.67

5.11 ± 3.22

5.41 ± 2.98

4.47 ± 1.91

Cross-Correlation

 B

(7.27 ± 2.04)ab

0.98 ± 0.01ab

 C

0.02 ± 0.02ab

0.97 ± 0.02ab

  1. aDenotes a multiplication by \(10^{-3}\)
  2. bDenotes FDR corrected statistical differences between baseline and cognitive runs