Living in social groups is clearly beneficial for many species, often resulting in increased survival, enhanced fitness of the group, and progression of brain development and cognitive abilities. The development of the social brain has been promoted on the basis (i) of activation of reward centres by social stimuli, (ii) of positive consequences of close social interactions on emotionality (which is reinforcing by itself) and on general fitness, and (iii) of negative health consequences in the absence or as a result of sudden interruption of social interactions. For example, social interactions as seen between mother and child or between mating partners have beneficial effects on the mental and physical health state, in particular on adaptive processes related to emotional and physiological stress coping in both sexes. Here, the neurobiological basis of social behaviour, in particular the involvement of the brain neuropeptides, oxytocin and prolactin, in mediating such positive health effects will be discussed.

中文翻译：

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社交生活的优势：脑神经肽介导性和母性的有益后果

生活在社会群体中显然对许多物种有益，通常会导致生存率提高、群体适应性增强以及大脑发育和认知能力的进步。社会大脑的发展基于以下基础：（i）社会刺激激活奖赏中心，（ii）密切社会互动对情绪（其自身增强）和总体健康的积极影响，以及（ iii) 在缺乏社交互动或突然中断社交互动的情况下对健康造成负面影响。例如，母子之间或配偶之间的社会互动对身心健康状态有有益影响，特别是对与两性情绪和生理压力应对相关的适应过程。这里，