Social connections predict brain structure in a multidimensional free-ranging primate society.

Social connections predict brain structure in a multidimensional free-ranging primate society.
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DOI:
10.1126/sciadv.abl5794
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发表时间:
2022-04-15
期刊:
影响因子:
13.6
通讯作者:
Sallet, Jerome
Sallet, Jerome
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Testard, Camille;Brent, Lauren J. N.;Andersson, Jesper;Chiou, Kenneth L.;Negron-Del Valle, Josue E.;DeCasien, Alex R.;Acevedo-Ithier, Arianna;Stock, Michala K.;Anton, Susan C.;Gonzalez, Olga;Walker, Christopher S.;Foxley, Sean;Compo, Nicole R.;Bauman, Samuel;Ruiz-Lambides, Angelina, V;Martinez, Melween, I;Skene, J. H. Pate;Horvath, Julie E.;Higham, James P.;Miller, Karla L.;Snyder-Mackler, Noah;Montague, Michael J.;Platt, Michael L.;Sallet, Jerome

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Reproduction and survival in most primate species reflects management of both competitive and cooperative relationships. Here, we investigated the links between neuroanatomy and sociality in free-ranging rhesus macaques. In adults, the number of social partners predicted the volume of the mid–superior temporal sulcus and ventral-dysgranular insula, implicated in social decision-making and empathy, respectively. We found no link between brain structure and other key social variables such as social status or indirect connectedness in adults, nor between maternal social networks or status and dependent infant brain structure. Our findings demonstrate that the size of specific brain structures varies with the number of direct affiliative social connections and suggest that this relationship may arise during development. These results reinforce proposed links between social network size, biological success, and the expansion of specific brain circuits. Brain structure is predicted by social network size but not other key social attributes in free-ranging monkeys.
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