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Table 3 Loadings of the vocal parameters extracted from the calls played back on the principal components with eigenvalue > 1 (PC1v to PC4v on a total of 12)

From: Perception of emotional valence in horse whinnies

 

Principal components

Parameters

PC1v

PC2v

PC3v

PC4v

Dur

0.19

0.64

0.28

-0.14

G0Start

-0.61

0.20

0.61

-0.19

G0Max

-0.81

-0.11

0.48

0.02

G0Mean

-0.81

-0.13

0.51

0.01

F0Start

0.56

0.62

0.41

0.11

F0Max

0.61

0.60

0.44

0.04

F0Mean

0.30

0.81

-0.08

0.06

AMVar

0.45

-0.34

0.44

0.54

AMExtent

0.13

-0.36

0.15

0.83

Q25%

-0.41

0.58

-0.50

0.41

Q50%

-0.73

0.52

-0.20

0.31

Q75%

-0.76

0.42

-0.09

0.17

Eigenvalue

1.99

1.70

1.35

1.17

Cum % variance

33.16

24.11

15.27

11.34

  1. Bold types indicate the heaviest factor loadings (|r| > 0.40). Eigenvalues and variances explained are given at the bottom of the table (see Table 1 for abbreviation of the parameters)