Somatosensory cortex in affective social relationships

情感社会关系中的体感皮层

• 批准号: 6653978
• 负责人: Sally P. Mendoza
• 金额: $ 14.82万
• 依托单位: UNIVERSITY OF CALIFORNIA AT DAVIS
• 依托单位国家: 美国
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-01 至 2006-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6653978
• 关键词: Primates; behavior test; brain interhemispheric activity; brain mapping; electrophysiology; ethology; experimental brain lesion; family; histology; motivation; neural information processing; neurophysiology; social behavior; social group; somesthetic sensory cortex

DESCRIPTION (provided by applicant): Social relationships among primates include extensive physical contact between individual members of the relationship. The propensity to seek contact with individuals with which a strong relationship has been established is exemplified in the extreme by the South American titi monkey. These monogamous primates spend up to 90% of their day in physical contact with other members of their family group. Much of the contact between family members is passive -animals sit side-by-side with their lateral surface in close contact with another monkey. A unique aspect of this social contact is tail-twining. As animals sit in passive contact, they swing their tails laterally until it contacts the other animal's tail and then the tails tightly wrap around one another. When multiple animals are sitting together they wrap all of their tails in a single tail- twine. Active contact between titi monkeys includes grooming, grasping an arm to pull adjacent animals closer, nuzzling the chest or mouth of another group member, and, for males, bimanual clasping of the female's haunches during copulation. The proposed research will examine the role of several somatosensory cortical areas we believe are involved in the expression and maintenance of affective social relationships. We will examine information processing and the functional organization of somatosensory areas in anterior and posterior parietal cortex using multiunit recording techniques and neuroanatomical tracing techniques. We expect that representation of body parts, involved in social contact, will be magnified compared to other primates. We will selectively lesion, using aspiration techniques, different cortical fields in animals from well-established social groups. We will then monitor changes in social behavior and social motivation associated with the loss of a specific field or body part representation therein. These studies are unique in that they take advantage of an overt behavior, directly mediated by the somatosensory system, to examine the role of cortical mechanisms involved in discrete social interactions.

描述（由申请人提供）：灵长类动物之间的社会关系包括关系的各个成员之间的广泛身体接触。南美蒂蒂·猴（Titi Monkey）在极端的极端体现了与建立牢固关系的个人接触的倾向。这些一夫一妻制的灵长类动物在与家庭团体的其他成员的身体接触中花费了多达90％的一天。家庭成员之间的许多接触是被动动物的并排坐在其侧面与另一只猴子密切接触的情况下。这种社会接触的一个独特方面是扭转局势。当动物坐在被动接触中时，它们横向摆动尾巴，直到它接触另一只动物的尾巴，然后尾巴紧紧缠绕。当多个动物坐在一起时，它们将所有尾巴都包裹在一个尾部麻线中。蒂蒂猴子之间的主动接触包括修饰，抓住手臂以将相邻动物拉近，刺痛另一组成员的胸部或嘴巴，对于男性，在交配过程中，雌性的haunch胸会受到双歧s的握力。 拟议的研究将研究我们认为，我们认为的几个体感皮质区域的作用参与了情感社会关系的表达和维护。我们将使用多单位记录技术和神经解剖学跟踪技术检查信息处理以及前后和后顶层皮层的体感区域的功能组织。我们预计与其他灵长类动物相比，与社会接触有关的身体部位的代表将被放大。我们将使用攻击技术和良好社会群体中动物的不同皮质领域有选择地病变。然后，我们将监控与其中的特定领域或身体部位表示相关的社会行为和社会动机的变化。这些研究是独一无二的，因为它们利用了由体感系统直接介导的公开行为来检查涉及离散社交相互作用中涉及的皮质机制的作用。