Mosaic Evolution of Brainstem Motor Nuclei in Catarrhine Primates

Figure 1

Scatter-plot matrix depicting relationships among brainstem motor nuclei volumes in catarrhines before size correction. Data are natural log transformed. Variable abbreviations—medulla: medulla volume; Vmo: trigeminal motor nucleus volume; VII: facial motor nucleus volume; XII: hypoglossal nucleus volume. Species abbreviations—Ca: Cercopithecus ascanius; Cm: Cercopithecus mitis; Ep: Erythrocebus patas; Gg: Gorilla gorilla; Hl: Hylobates lar; La: Lophocebus albigena; Mm: Macaca mulatta; Mt: Miopithecus talapoin; Nl: Nasalis larvatus; Pp: Pan paniscus; Pt: Pan troglodytes; Pa: Papio anubis; Pb: Procolobus badius; Pn: Pygathrix nemaeus.