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Social Status and the Non-human Primate Brain

  • Stephanie L. Willard
  • Carol A. ShivelyEmail author
Chapter
Part of the Developments in Primatology: Progress and Prospects book series (DIPR)

Abstract

Social status hierarchies are a central facet of life for numerous species. Much is known about the effects of social rank on the behavior and physiology of these species, yet the neurobiological effects have not been studied in great detail across species. In humans, low socioeconomic status is associated with poor health-related outcomes across the life span, yet understanding the neurobiological components has proven challenging. Thus, animal studies have focused on the influence of social hierarchy-related stress, most commonly using social conflict to induce a subordinate state or depressive-like behavior. The degree to which stress responses in rodents actually reflect subordination in naturally formed social hierarchies, and not simply stress or even depression, is debatable. Studies of the brain in social species with natural hierarchies resulting from multiple factors will increase our understanding of the neurobiology of social status. Non-human primates form hierarchies, in which either the dominant and/or the subordinate animals can experience stress, depending upon the species. In addition, the non-human primate is very similar to the human brain with regard to neocortical complexity, a key characteristic that distinguishes the highly social primate from other species. In this chapter, we review what is known about the brain with regard to social status in primates, beginning with a brief discussion of the applicability of animal models to understanding social status. We will then discuss in detail what has been reported with regard to the neurobiology of social status in non-human primates, while relating these findings to what is known in humans.

Keywords

Social status Non-human primate Socioeconomic status Brain Animal models Neurodevelopment Social network size Neurogenesis Monoamines Sex differences Female 

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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  1. 1.Department of Pathology, Section on Comparative MedicineWake Forest School of MedicineWinston-SalemUSA

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