English: The aurofacial asymmetry is the asymmetry of the eyes, nose and mouth with respect to the median plane between the ears, and was predicted by the Axial Twist Theory. The eyes-nose-mouth region (red) belongs anatomically to the rostral head, whereas the ears (blue) are part of the posterior head. Since the asymmetric growth (red and blue ar- rows) is predicted to be incomplete, we hypothesize that the face is shifted to the left side (small arrows) with respect to the mid-plane between the tragi (vertical line). Green dots show paired and median facial landmarks; paired: tragus of the ear, frontotemporale, exo- and endocanthion of the eye; median from top: nasion, pronasale, subnasale, labiale superior, and menton. Small arrows show the asymmetry of the facial landmarks.
Full-size DOI: 10.7717/peerj.7096/fig-1 This is figure 1C from Marc H. E. de Lussanet. Opposite asymmetries of face and trunk and of kissing and hugging, as predicted by the axial twist hypothesis. PeerJ, 7:e7096, 2019. doi: 10.7717/peerj.7096.
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Captions
Schema of the predicted aurofacial asymmetry for the human face.