Fig. 8: Correlations for neuroanatomical measurements.
Volumes recorded in the current study were correlated with the measurements from Heuer et al.89. The lower diagonal displays the correlations of log10-transformed variables, which were not corrected for phylogeny and included all specimens. These correlations serve to illustrate the strong collinearity between the traits, which are an expected outcome of allometric scaling. Corresponding R2 coefficients for the correlations can be found on the upper diagonal. Cerebellar, cerebral, and ansiform volumes correlated strongly and positively with all other variables, except fold wavelength, for which a negative correlation was observed. N = 34 species.
