Neural mechanisms of mother–infant bonding and pair bonding: Similarities, differences, and broader implications

This article is part of a Special Issue “Parental Care”. Mother–infant bonding is a characteristic of virtually all mammals. The maternal neural system may have provided the scaffold upon which other types of social bonds in mammals have been built. For example, most mammals exhibit a polygamous mat...

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Vydané v:	Hormones and behavior Ročník 77; s. 98 - 112
Hlavní autori:	Numan, Michael, Young, Larry J.
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	United States Elsevier Inc 01.01.2016 Elsevier BV
Predmet:	Amygdala Animal reproduction Animals Cerebrum - physiology Dopamine Dopamine - physiology Female Hormones Mammals Mammals - physiology Maternal Behavior - physiology Medial preoptic area Microtus Monogamy Mothers Neurobiology Nucleus accumbens Object Attachment Oxytocin Oxytocin - physiology Pair Bond Social attachment Vasopressin Ventral pallidum Nucleus accumbens Dopamine Oxytocin Ventral pallidum Amygdala Monogamy Medial preoptic area Vasopressin Social attachment
ISSN:	0018-506X, 1095-6867
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Shrnutí:	This article is part of a Special Issue “Parental Care”. Mother–infant bonding is a characteristic of virtually all mammals. The maternal neural system may have provided the scaffold upon which other types of social bonds in mammals have been built. For example, most mammals exhibit a polygamous mating system, but monogamy and pair bonding between mating partners occur in ~5% of mammalian species. In mammals, it is plausible that the neural mechanisms that promote mother–infant bonding have been modified by natural selection to establish the capacity to develop a selective bond with a mate during the evolution of monogamous mating strategies. Here we compare the details of the neural mechanisms that promote mother–infant bonding in rats and other mammals with those that underpin pair bond formation in the monogamous prairie vole. Although details remain to be resolved, remarkable similarities and a few differences between the mechanisms underlying these two types of bond formation are revealed. For example, amygdala and nucleus accumbens–ventral pallidum (NA–VP) circuits are involved in both types of bond formation, and dopamine and oxytocin actions within NA appear to promote the synaptic plasticity that allows either infant or mating partner stimuli to persistently activate NA–VP attraction circuits, leading to an enduring social attraction and bonding. Further, although the medial preoptic area is essential for maternal behavior, its role in pair bonding remains to be determined. Our review concludes by examining the broader implications of this comparative analysis, and evidence is provided that the maternal care system may have also provided the basic neural foundation for other types of strong social relationships, beyond pair bonding, in mammals, including humans. •Mother–infant bonding is typical of all mammals but monogamy with pair bonding is rare.•Remarkable similarities exist in the neural mechanisms of mother–infant bonding and pair bonding.•Dopamine and oxytocin actions on the nucleus accumbens–ventral pallidum circuit are involved.•The maternal neural circuitry may have provided the foundation for other types of strong social bonds in mammals.
Bibliografia:	SourceType-Scholarly Journals-1 content type line 14 ObjectType-Undefined-1 ObjectType-Review-2 ObjectType-Article-1 ObjectType-Feature-3 content type line 23 ObjectType-Feature-2
ISSN:	0018-506X 1095-6867
DOI:	10.1016/j.yhbeh.2015.05.015