PREDICTIVE MODELING OF BIOELECTRIC ACTIVITY ON MAMMALIAN MULTILAYERED NEURONAL STRUCTURES IN THE PRESENCE OF SUPRAPHYSIOLOGICAL ELECTRIC FIELDS

超生理电场存在下哺乳动物多层神经元结构生物电活动的预测建模

• 批准号: 10015260
• 负责人: THEODORE W. BERGER
• 金额: $ 66.89万
• 依托单位: UNIVERSITY OF SOUTHERN CALIFORNIA
• 依托单位国家: 美国
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-15 至 2022-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10015260
• 关键词: 3-Dimensional; Affect; Alzheimer' s Disease; Axon; Biological; California; Communities; Computer Simulation; Coupling; Data; Development; Disabled Persons; Disease; Electric Stimulation; Electrodes; Electrophysiology (science); Engineering; Epilepsy; Episodic memory; Extracellular Space; Family; Foundations; Future; Goals; Grant; Hippocampus (Brain); Kinetics; Link; Magnetism; Medical Device; Memory; Methodology; Methods; Modeling; Molecular; Monitor; Nervous system structure; Neurodegenerative Disorders; Neuroglia; Neurologic; Neurons; Neurosciences; Outcome; Output; Pathogenicity; Pattern; Performance; Population; Positioning Attribute; Property; Prosthesis; Public Health; Research; Retina; Source; Spatial Distribution; Structure; Synapses; System; Techniques; Testing; Time; Tissues; Training Activity; United States National Institutes of Health; Universities; Utah; Work; base; bioelectricity; cognitive function; crosslink; density; design; electric field; extracellular; improved; insight; models and simulation; molecular modeling; multi-electrode arrays; multi-scale modeling; neural prosthesis; neuropathology; next generation; novel; predictive modeling; receptor; relating to nervous system; simulation; spatiotemporal; tool

Project Abstract The end goal of this multiscale modeling research is to bridge the gap existing between three-dimensional, full- wave, macro-modeling of electrical and magnetic biointeractions (global modeling) and cellular-level modeling strategies. Our research team is composed of engineers and neuroscientists that are experts in all computational and experimental aspects necessary to fill the existing gaps in multi-scale modeling. This multi-university effort to predict spatio-temporal distributions of active neurons based on current densities created by multi-electrode electrical stimulation depends on having a set of "core models" of molecular (receptor-channel kinetics), synaptic, neuron, and multi-neuron activity. These models and their inputs and outputs must be integrated into a global model of the extracellular media/matrix including relevant multi- electrode arrays. Successful modeling at these levels will allow hypotheses about space-time patterns of electrical stimulation to produce predictions about the number and distribution of activated inputs (based on known spatial distributions of afferent axons). The linked molecular, synaptic, neuron, multi-neuron, and global model will provide the basis for emerging predictions of the spatio-temporal distribution of active neurons and thus, the spatio-temporal distributions of spike train activity that encode all information in the nervous system. Further, we believe the proposed multiscale modeling framework constitutes an ideal platform capable of generating novel insights into the pathogenic mechanisms precipitating abnormal hippocampal function. Although the proposed research is focused on the hippocampal system, our effort will capitalize on our multiscale modeling accomplishments during the performance period of our original multiscale modeling U01 grant, in the realm of both retinal and cortical prostheses.

项目摘要