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Social connections predict brain structure in a multidimensional free-ranging primate society.
- Source :
-
Science advances [Sci Adv] 2022 Apr 15; Vol. 8 (15), pp. eabl5794. Date of Electronic Publication: 2022 Apr 13. - Publication Year :
- 2022
-
Abstract
- 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.
- Subjects :
- Animals
Humans
Macaca mulatta
Temporal Lobe
Brain diagnostic imaging
Social Behavior
Subjects
Details
- Language :
- English
- ISSN :
- 2375-2548
- Volume :
- 8
- Issue :
- 15
- Database :
- MEDLINE
- Journal :
- Science advances
- Publication Type :
- Academic Journal
- Accession number :
- 35417242
- Full Text :
- https://doi.org/10.1126/sciadv.abl5794