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Table 4 Significant time features from raw (denoted by the subscript r) and envelope (denoted by the subscript e) CBFV signals where p<0.05

From: Cognitive tasks and cerebral blood flow through anterior cerebral arteries: a study via functional transcranial Doppler ultrasound recordings

Signal

ACA

Feature

Group

Group 1

Group 2

e

R-ACA

Skewness

R

M: 1.81 ± 1.09

F: 0.91 ± 0.73

e

R-ACA

Skewness

W

M: 1.50 ± 1.13

F: 0.95 ± 0.50

e

L-ACA

Skewness

G

M: 1.40 ± 0.63

F: 0.87 ± 0.62

e

R-ACA

Kurtosis

R

M: 9.21 ± 8.01

F: 4.80 ± 3.08