Selective dissection of local and distributed neocortical inhibitory circuits underlying sensory representation

项目摘要/摘要 这项研究旨在加深我们对早期和早期之间因果关系的理解。 神经回路的形成和成年人的行为，特别是健康的大脑发育如何会出现问题 在一生中感觉处理的缺陷。加深对正常和异常的理解 神经发育过程中，迫切需要解构驱动的病理生理 发育性皮质多动与持续性适应不良认知出现之间的机制 感官和社交行为。如果没有这样的信息，早期干预的新目标的承诺 神经发育疾病可能仍将是有限的。在F99阶段，我将测试是否发育 锥体神经元过度兴奋导致持续性成人超敏反应(Aim IA)和快峰电位缺陷 抑制性神经元募集(AIM IB)--自闭症患者的关键神经生理和行为特征 谱系障碍和神经发育综合征。在AIM II中，我将补充我的神经生理学 高密度电生理记录训练和前额叶皮质的双光子成像 投射到感觉区域，以测试它们如何影响由局部调节的编码和电路动力学 抑制性神经元亚型。这项工作将有助于理解神经发育的起源。 这将有助于拓宽我们对自发活动障碍的理解。 通过提供对因果细胞类型特定角色的机械性洞察，提供遗传、免疫和环境因素 锥体神经元和抑制性神经元亚型。F99/K00阶段的培训将补充我的 开发分子技术解剖大脑皮层局部和长期投射的深层背景 驱动着复杂的行为。在我自己的实验室里，我将随时开发下一代分子技术 随着生物学复杂性的增加，在时间和空间尺度上解剖新皮质计算 (基因、蛋白质、细胞、回路)是感觉处理的基础。

PROJECT SUMMARY/ABSTRACT The research proposed here is aimed at furthering our understanding of causal relationships between early neural circuit formation and adult behavior, and specifically how healthy brain development can go awry to result in deficits in sensory processing across a lifetime. Towards a deeper understanding of normal and aberrant neurodevelopmental processes, there is a critical need to deconstruct the driving pathophysiological mechanisms between developmental cortical hyperactivity and emergence of persistent maladaptive cognitive, sensory and social behaviors. Without such information, the promise of novel targets for early intervention in neurodevelopmental diseases will likely remain limited. During the F99 Phase, I will test if developmental hyperexcitation of pyramidal neurons leads to persistent adult hypersensitivity (Aim IA) and deficits in fast-spiking inhibitory neuron recruitment (Aim IB)—key neurophysiological and behavioral signatures seen in autism spectrum disorders and neurodevelopmental syndromes. In Aim II, I will complement my neurophysiological training in high density electrophysiological recordings and perform two-photon imaging of prefrontal cortex projections into sensory areas to test how they influence encoding and circuit dynamics regulated by local inhibitory neuron subtypes. This work will contribute to understanding the neurodevelopmental origins of hypersensitivity and will help to broaden our understanding of disturbances in spontaneous activity beyond genetic, immune and environmental factors by providing mechanistic insight into causal cell-type specific roles of pyramidal neuron and inhibitory neuron subtypes. The training for the F99/K00 Phases will complement my deep background in developing molecular technologies to dissect neocortical local and long-range projections driving complex behavior. In my own lab I will readily develop next-generation molecular technologies for dissecting neocortical computations across temporal and spatial scales with increasing biological complexity (genes, proteins, cells, circuits) underlying sensory processing.