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Controlled neuronal firing in vivo using two photon spatially shaped optogenetics

使用两个光子空间形状光遗传学控制体内神经元放电

基本信息

批准号：
9770567
负责人：
Emily Gibson
金额：
$ 80.09万
依托单位：
UNIVERSITY OF COLORADO DENVER
依托单位国家：
美国
项目类别：
财政年份：
2017
资助国家：
美国
起止时间：
2017-09-30 至 2022-08-31
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/9770567
关键词：
3-Dimensional Animal Model Animals Area BRAIN initiative Behavior Brain Brain imaging Brain region Calcium Caliber Cell Culture Techniques Cells Coupled Custom Data Decision Making Devices Disease Engineering Fiber Generations Head Health Hippocampus (Brain)Image Individual Intelligence Label Lasers Lateral Light Lighting Location Microscope Movement Mus Nervous system structure Neurons Neurophysiology - biologic function Operative Surgical Procedures Opsin Optics Pattern Phenotype Phototoxicity Physiologic pulse Process Publications Resolution Site Solid Songbirds System Technology Testing Three-Dimensional Imaging TimeLine Tissues Validation Weight Work awake base brain tissue calcium indicator confocal imaging design flexibility fluorescence imaging fluorescence microscope implantation improved in vivo innovation instrument interest lens light scattering light weight meetings mind control miniaturize multi-electrode arrays multidisciplinary myelination neural circuit nonhuman primate novel olfactory bulb optical fiber optical imaging optogenetics photoactivation relating to nervous system response sensor sensory input social communication two photon microscopy two-photon vocal learning

项目摘要

This is an application in response to RFA-NS-17-00 4 “BRAIN Initiative: Optimization of Transformative Technologies for Large Scale Recording and Modulation in the Nervous System (U01)”. In a proof-of-concept publication we demonstrated a novel fiber-coupled miniature microscope that achieved 3D confocal imaging of fluorescently labeled neurons in brain tissue using electrowetting lens technology for axial focusing. This low weight instrument (<2 g) is suitable for surgical implantation to achieve all optical awake behaving recording with axial focusing deep in the mouse brain, a significant advance compared to commercially available devices. In this proposal we present a major breakthrough demonstrating successful imaging through the fiber coupled microscope using two-photon microscopy. Leveraging on this result we propose to optimize our proof of concept E-FCM (electrowetting-fiber coupled microscope) by making it compatible for two-photon excitation (2PE-FCM) suitable for recording and modulating neural activity in awake behaving mice. Our 2PE-FCM will incorporate holographic two-photon opsin stimulation with a spatial light modulator (SLM) for rapid 3D volumetric two-photon imaging and modulation of neuronal activity. Optimization of the 2PE-FCM will be achieved by regular interactions of beta users with a multidisciplinary group of physicists, engineers and neuroscientists in a parallel process of design implementation and testing the device. Testing of the 2PE-FCM will employ a step-by-step approach designed for effective generation of a device suitable for studying local circuits in different brain areas in different species. We propose a solid dissemination plan partnering with Intelligent Imaging Innovations Inc. to commercialize the device. Validation of the 2PE-FCM will be a major advance in all-optical interrogation of neural circuits creating a new venue for understanding the neural basis of behavior. Aim 1. TECHNICAL APPROACH: Optogenetic activation and simultaneous readout of deep brain neurons using a novel fiber coupled microscope with a variable focus electrowetting lens using no moving parts. Aim 2. MILESTONES AND TIMELINE: Validate and disseminate the 2PE-FCM device for studies of the neural basis of behavior in freely behaving animals.

这是一个响应RFA-NS-17-00 4“BRAIN Initiative: Optimization of Transformative”的应用