Role of Oxytocin in the Amygdala-Prefrontal Network During Social Decision-Making

催产素在社会决策过程中杏仁核前额叶网络中的作用

• 批准号: 8878644
• 负责人: Steve Wohn Chul Chang
• 金额: $ 24.9万
• 依托单位: YALE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-08-01 至 2017-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8878644
• 关键词: Affective; Amygdaloid structure; Animal Model; Anterior; Area; Behavior; Behavioral; Brain; Breathing; Cues; Decision Making; Disease; Emotional; Empathy; Evaluation; Functional disorder; Human; Individual; Injection of therapeutic agent; Intervention; Juice; Knowledge; Mediating; Monkeys; Neurons; Neuropeptides; Outcome; Oxytocin; Oxytocin Receptor; Placebos; Population; Process; Psychological reinforcement; Reporting; Rewards; Role; Schizophrenia; Signal Transduction; Site; Social Behavior; Social Interaction; Specificity; Structure; Testing; Therapeutic; Therapeutic Agents; Variant; Vasopressins; abstracting; autism spectrum disorder; base; behavior test; cingulate cortex; cohort; information processing; microstimulation; neuromechanism; neuropsychiatry; preference; psychopathic personality; public health relevance; response; risk variant; social; social cognition; tool

Abstract Neuropeptides are critical for social cognition, and are actively being pursued as a therapeutic agent for treating diseases with marked social deficits, such as autism spectrum disorders (ASD), schizophrenia, and psychopathy. Oxytocin (OT) is an evolutionarily conserved neuropeptide involved in social processing in multiple species. Despite numerous demonstrations of OT-induced social behavior, it remains unclear how OT modulates networks of neurons involved in social decision-making. Using the reward donation task involving donor and recipient monkeys, we reported that inhaled OT enhances vicarious reinforcement of the donor when the choice is between rewarding another and no one, whereas it amplifies self reinforcement when the choice is between rewarding himself and another. OT in this task also enhances the looking behavior at the recipient following reward donations. Empathy-related processing might be mediated by a cohort of networks involving amygdala, anterior cingulate (ACC), and orbitofrontal cortices (OFC). In the reward donation task, we also found that ACC neurons predominantly represent rewards delivered to another, whereas OFC neurons predominantly represent rewards delivered to self. Amygdala contains a high number of OT receptors, and mediates affective and social processing. Amygdala, especially the basolateral portion, is reciprocally connected with ACC and OFC, and is involved in evaluating both positive and negative rewards. OT directly gates information processing in amygdala with other structures, and influences amygdala activations during social evaluations in humans. Critically, OT receptor risk allele carriers for ASD show altered amygdala activations in social emotional tasks. Given these observations, we seek to elucidate the following by capitalizing upon the reward donation task: 1) activity of single amygdala neurons during reward allocation decisions; 2) neural mechanisms of OT-induced responses in amygdala neurons; and 3) specific modulations of ACC and OFC neurons due to OT-mediated processes by amygdala. We hypothesize that amygdala contains both vicarious and self reinforcement signals, and these are both amplified by inhaled OT. We further hypothesize that local OT delivery to amygdala neurons enhances self reward signals in OFC and vicarious reward signals in ACC. Our results have a potential to advance our knowledge on neuropsychiatric diseases with social deficits, and our understanding of OT-based therapeutics.

摘要