NDLI: Dopamine in the medial amygdala network mediates human bonding

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Dopamine in the medial amygdala network mediates human bonding

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Dopamine in the medial amygdala network mediates human bonding

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Rudy, Tali Barrett, Lisa Feldman Salcedo, Stephanie Catana, Ciprian Feldman, Ruth Hooker, Jacob M. Touroutoglou, Alexandra Dickerson, Bradford C. Atzil, Shir
Description	Author Affiliation: Atzil S ( Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129.); Touroutoglou A ( Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129.); Rudy T ( Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129.); Salcedo S ( Department of Psychology, Northeastern University, Boston, MA 02115.); Feldman R ( Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129.); Hooker JM ( Yale Child Study Center, New Haven, CT 06520.); Dickerson BC ( Gonda Brain Research, Bar Ilan University, Ramat Gan 5290002, Israel.); Catana C ( Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129.); Barrett LF ( Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129.);
Abstract	Research in humans and nonhuman animals indicates that social affiliation, and particularly maternal bonding, depends on reward circuitry. Although numerous mechanistic studies in rodents demonstrated that maternal bonding depends on striatal dopamine transmission, the neurochemistry supporting maternal behavior in humans has not been described so far. In this study, we tested the role of central dopamine in human bonding. We applied a combined functional MRI-PET scanner to simultaneously probe mothers’ dopamine responses to their infants and the connectivity between the nucleus accumbens (NAcc), the amygdala, and the medial prefrontal cortex (mPFC), which form an intrinsic network (referred to as the “medial amygdala network”) that supports social functioning. We also measured the mothers’ behavioral synchrony with their infants and plasma oxytocin. The results of this study suggest that synchronous maternal behavior is associated with increased dopamine responses to the mother’s infant and stronger intrinsic connectivity within the medial amygdala network. Moreover, stronger network connectivity is associated with increased dopamine responses within the network and decreased plasma oxytocin. Together, these data indicate that dopamine is involved in human bonding. Compared with other mammals, humans have an unusually complex social life. The complexity of human bonding cannot be fully captured in nonhuman animal models, particularly in pathological bonding, such as that in autistic spectrum disorder or postpartum depression. Thus, investigations of the neurochemistry of social bonding in humans, for which this study provides initial evidence, are warranted.
ISSN	00278424
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	9
Volume Number	114
Language	English
Publisher	National Academy of Sciences
Publisher Date	2017-02-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Multidisciplinary
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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