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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)