If your social life leaves something to be desired, it might be your brain structure thats to blame.　　A Facebook feature deep in the temporal lobe governs the number of friends you are likely to make, scientists have found.　　The amygdala, a small almond-shaped structure, has for some time been linked to empathy and fear responses.　　But a study suggests that the larger the amygdala, the wider and more complex is its owners network of friends and colleagues.　　Volunteers aged between 19 to 83 were asked to complete questionnaires which measured how many regular social contacts they had, and in how many different groups.　　Magnetic resonance imaging scans found a positive link between big amygdalas and the richest social lives. Professor Lisa Barrett, a psychologist at Northeastern University in Boston, Massachusetts, reported the findings in the journal Nature Neuroscience.　　She said they were consistent with the social brain theory, which suggests the human amygdala evolved to deal with an increasingly complex social world.　　Other studies of primates have shown that those living in larger groups tend to have larger amygdalas. The findings was published in a new study in Nature Neuroscience.　　Dr Lisa Barrett, Professor of Psychology at Northeastern University, who took part in the research, said the amygdala got bigger to cope with mankinds more hectic social life.　　She added: Further research is in progress to try to understand more about how the amygdala and other brain regions are involved in social behaviour in humans.　　Her colleague Dr Bradford Dickerson, an associate Professor of Neurology at Harvard Medical School said: This link between amygdala size and social network size and complexity was observed for both older and younger individuals and for both men and women.　　Recently US scientists reported on the case of a woman whose amygdala had been destroyed by a medical condition.　　As a result the 44-year-old mother of three felt no fear and constantly put herself in danger. Over the years she had been threatened with a knife, held at gunpoint and assaulted.　　如果你的社交生活不尽人意，那可能得怪你的大脑结构?！　】蒲Ъ颐欠⑾郑竽则ㄒ渡畲Φ慕患侍卣骶龆四憧赡芙坏降呐笥迅鍪！　∪嗣且欢热衔尤屎擞胪硇暮涂志宸从τ泄?。杏仁核是大脑内一个小的杏仁状组织。　　但是一项研究显示，一个人的杏仁核越大，他的朋友圈和同事圈就越大越复杂?！　〔斡敫醚芯康闹驹刚吣炅浣橛?9岁到83岁之间，研究者请他们填写调查问卷，以得出他们经常联系的朋友个数以及有多少种不同类别的朋友?！　〈殴舱癯上裆柘允?，杏仁核的大小与社交生活的丰富程度成正比。美国东北大学的心理学家丽莎 贝瑞特教授在《自然神经科学》杂志上发表了以上调查结果。东北大学位于马萨诸塞州波士顿市。　　贝瑞特教授说调查结果与社会脑理论相符，该理论认为人类杏仁核的进化是为了应对愈来愈复杂的社交世界?！　∑渌粤槌だ喽锏难芯糠⑾郑壕佣锏男尤屎艘笠恍?。这些研究成果发表在《自然神经科学》的一项新研究报告中。　　东北大学的心理学教授丽莎 贝瑞特博士参与了这项课题，她说人类的杏仁核变大是为了应付日益繁忙的社交生活?！　∷幼潘担何颐悄壳罢诮懈畈愦蔚难芯浚唇徊搅私庑尤屎撕推渌圆壳蛉绾斡跋烊死嗟纳缁嵝形??！　∷耐虏祭赂５?狄克生博士说：我们观察了人们的杏仁核大小与社交圈大小和复杂程度之间的关系。我们的观察对象有老有少，有男有女。狄克生博士是哈佛大学医学院的神经病学副教授?！　∶拦蒲Ъ颐枪鄄炝艘晃灰虿〉贾滦尤屎耸芩鸬母九罱蔷凸鄄旖峁髁吮ǜ妗！　”ǜ嫦允荆馕灰丫侨龊⒆幽盖椎?4岁的女人从来感觉不到恐惧，并经常将自己置于危险的境地。这些年来，她遭受过匕首威胁，被人拿枪指过头，还曾经惨遭殴打。

　　If your social life leaves something to be desired, it might be your brain structure thats to blame.　　A Facebook feature deep in the temporal lobe governs the number of friends you are likely to make, scientists have found.　　The amygdala, a small almond-shaped structure, has for some time been linked to empathy and fear responses.　　But a study suggests that the larger the amygdala, the wider and more complex is its owners network of friends and colleagues.　　Volunteers aged between 19 to 83 were asked to complete questionnaires which measured how many regular social contacts they had, and in how many different groups.　　Magnetic resonance imaging scans found a positive link between big amygdalas and the richest social lives. Professor Lisa Barrett, a psychologist at Northeastern University in Boston, Massachusetts, reported the findings in the journal Nature Neuroscience.　　She said they were consistent with the social brain theory, which suggests the human amygdala evolved to deal with an increasingly complex social world.　　Other studies of primates have shown that those living in larger groups tend to have larger amygdalas. The findings was published in a new study in Nature Neuroscience.　　Dr Lisa Barrett, Professor of Psychology at Northeastern University, who took part in the research, said the amygdala got bigger to cope with mankinds more hectic social life.　　She added: Further research is in progress to try to understand more about how the amygdala and other brain regions are involved in social behaviour in humans.　　Her colleague Dr Bradford Dickerson, an associate Professor of Neurology at Harvard Medical School said: This link between amygdala size and social network size and complexity was observed for both older and younger individuals and for both men and women.　　Recently US scientists reported on the case of a woman whose amygdala had been destroyed by a medical condition.　　As a result the 44-year-old mother of three felt no fear and constantly put herself in danger. Over the years she had been threatened with a knife, held at gunpoint and assaulted.　　如果你的社交生活不尽人意，那可能得怪你的大脑结构?！　】蒲Ъ颐欠⑾?，大脑颞叶深处的交际特征决定了你可能交到的朋友个数?！　∪嗣且欢热衔尤屎擞胪硇暮涂志宸从τ泄?。杏仁核是大脑内一个小的杏仁状组织?！　〉且幌钛芯肯允?，一个人的杏仁核越大，他的朋友圈和同事圈就越大越复杂?！　〔斡敫醚芯康闹驹刚吣炅浣橛?9岁到83岁之间，研究者请他们填写调查问卷，以得出他们经常联系的朋友个数以及有多少种不同类别的朋友?！　〈殴舱癯上裆柘允荆尤屎说拇笮∮肷缃簧畹姆岣怀潭瘸烧?。美国东北大学的心理学家丽莎 贝瑞特教授在《自然神经科学》杂志上发表了以上调查结果。东北大学位于马萨诸塞州波士顿市。　　贝瑞特教授说调查结果与社会脑理论相符，该理论认为人类杏仁核的进化是为了应对愈来愈复杂的社交世界?！　∑渌粤槌だ喽锏难芯糠⑾郑壕佣锏男尤屎艘笠恍?。这些研究成果发表在《自然神经科学》的一项新研究报告中?！　《贝笱У男睦硌Ы淌诶錾?贝瑞特博士参与了这项课题，她说人类的杏仁核变大是为了应付日益繁忙的社交生活?！　∷幼潘担何颐悄壳罢诮懈畈愦蔚难芯浚唇徊搅私庑尤屎撕推渌圆壳蛉绾斡跋烊死嗟纳缁嵝形?。　　她的同事布拉德福德 狄克生博士说：我们观察了人们的杏仁核大小与社交圈大小和复杂程度之间的关系。我们的观察对象有老有少，有男有女。狄克生博士是哈佛大学医学院的神经病学副教授?！　∶拦蒲Ъ颐枪鄄炝艘晃灰虿〉贾滦尤屎耸芩鸬母九罱蔷凸鄄旖峁髁吮ǜ?。　　报告显示，这位已经是三个孩子母亲的44岁的女人从来感觉不到恐惧，并经常将自己置于危险的境地。这些年来，她遭受过匕首威胁，被人拿枪指过头，还曾经惨遭殴打。