Table 3 Principal component analysis of QBA. Terms with loadings > 0.6 are bolded and were used to define the indexes identified in the analysis.

From: Spectro-temporal acoustic elements of music interact in an integrated way to modulate emotional responses in pigs

Terms

PC1 positive high arousal index

PC2 negative high arousal index

PC3 positive low arousal index

Active

0.48

0.71

0.24

Relaxed

0.49

−0.36

0.66

Fearful

−0.67

0.62

0.23

Agitated

−0.42

0.82

0.09

Calm

0.54

−0.36

0.63

Content

0.90

0.22

−0.02

Indifferent

−0.11

−0.49

−0.45

Friendly

0.91

0.19

−0.06

Bored

−0.03

−0.19

0.06

Playful

0.92

0.23

−0.13

Positively occupied

0.90

0.02

0.01

Lively

0.91

0.13

0.12

Inquisitive

−0.02

−0.37

0.50

Irritable

0.43

0.12

−0.34

Uneasy

−0.70

0.67

0.26

Sociable

0.91

0.19

−0.09

Happy

0.90

0.23

−0.17

Eigenvalues

7.94

2.83

1.54

Cumulative percentage of variance

46.68

63.33

72.41

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