TY - JOUR

T1 - Visual lateralization in artiodactyls: A brief summary of research and new evidence on saiga antelope

AU - Fourie, Babette

AU - Березина, Екатерина Алексеевна

AU - Гилев, Андрей Николаевич

AU - Каренина, Карина Андреевна

PY - 2021

Y1 - 2021

N2 - The visual system and lifestyle characteristics make the even-toed ungulates an excellent model for the studies of behavioural lateralization. Recent research has focused on these mammals providing evidence of lateralization in a wide range of behaviours. This provides an opportunity for the collation of the current theoretical assumptions and the existing empirical evidence for visual lateralization in artiodactyls. In the present study, we aim first to gain a fuller picture of hemispheric specializations in saiga antelopes by investigating the lateralization of vigilance and novel object inspection in the wild. Second, we summarized the results of the research into visual lateralization in even-toed ungulates and attempted to assess the applicability of two popular hypotheses about the division of hemispheric roles. The results on saigas show a significant preference for head turns to the right visual field during vigilance which was more robust in individuals in larger groups. When an unfamiliar artificial object was placed in their natural setting, saigas preferentially viewed it predominantly with the right eye. These results, together with the cumulative evidence in artiodactyls, do not follow either the approach—withdrawal or positivity—negativity dichotomous patterns widely used to explain the division of functions between the hemispheres.

AB - The visual system and lifestyle characteristics make the even-toed ungulates an excellent model for the studies of behavioural lateralization. Recent research has focused on these mammals providing evidence of lateralization in a wide range of behaviours. This provides an opportunity for the collation of the current theoretical assumptions and the existing empirical evidence for visual lateralization in artiodactyls. In the present study, we aim first to gain a fuller picture of hemispheric specializations in saiga antelopes by investigating the lateralization of vigilance and novel object inspection in the wild. Second, we summarized the results of the research into visual lateralization in even-toed ungulates and attempted to assess the applicability of two popular hypotheses about the division of hemispheric roles. The results on saigas show a significant preference for head turns to the right visual field during vigilance which was more robust in individuals in larger groups. When an unfamiliar artificial object was placed in their natural setting, saigas preferentially viewed it predominantly with the right eye. These results, together with the cumulative evidence in artiodactyls, do not follow either the approach—withdrawal or positivity—negativity dichotomous patterns widely used to explain the division of functions between the hemispheres.

KW - Laterality

KW - brain specialization

KW - eye preference

KW - novelty

KW - vigilance

UR - http://www.scopus.com/inward/record.url?scp=85096959744&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/a48bca5c-b532-38f2-ae32-0ba009cf601b/

U2 - 10.1080/1357650X.2020.1852245

DO - 10.1080/1357650X.2020.1852245

M3 - Article

VL - 26

SP - 106

EP - 129

JO - Laterality

JF - Laterality

SN - 1357-650X

IS - 1-2

ER -