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建模导向感知适应改变的重力环境与过去的感觉运动状态的记忆

Aaron R Allred¹, Victoria G Kravets¹, Nisar Ahmed²

¹Bioastronautics Laboratory, Smead Department of Aerospace Engineering Sciences, University of Colorado Boulder, Boulder, CO, United States.

Frontiers in neural circuits

|August 7, 2023

概括

适应新的引力环境需要时间. 这项研究模拟了大脑如何使用记忆来加快对熟悉的重力进行调整,从而降低了迷失方向和运动性疾病等风险.

科学领域:

神经科学是一个神经科学.
航空航天医学航空航天医学
计算生物学计算生物学

背景情况:

引力转换需要感官重新解释以适应,这一过程并不立即发生.
延迟适应新的重力可能导致失方向,运动控制受损和运动恶心.
现有的模型侧重于新的刺激适应,缺乏重新适应熟悉环境的机制.

研究的目的:

开发前体适应的计算模型,该模型包含隐性记忆,以更快地适应熟悉的引力刺激.
为了解释中枢神经系统 (CNS) 在重力转换的重新适应过程中如何重新解释感官信息.
为了减轻与感觉运动适应的时间滞后相关的风险.

主要方法:

开发了一种理论框架和计算模型,用于前体适应重力过渡.
采用贝叶斯推理和Rao-Blackwellized粒子过算法集成的隐性内存.
模拟了中枢神经系统的假设权重和感官运动状态的演变.

主要成果:

该模型展示了更快地适应熟悉的引力刺激,这与重复太空飞行参与者的观察结果一致.
模拟显示该模型有效地捕捉了记忆在感觉运动适应中的作用.
该框架成功地模拟了中枢神经系统的动态学习和考虑过去的引力状态.

结论:

拟议的模型增强了对中枢神经系统在重力过渡期间对感官信息的重新解释的理解.
隐式记忆显著加快了对熟悉的重力环境的重新适应.
这种方法为减轻与感觉运动适应延迟相关的风险提供了一条途径.

关键词:

贝叶斯语贝叶斯语贝叶斯语贝叶斯语宇航员宇航员是一个宇航员.内部模型 (IM) 是一种内部模型.多感应集成 (MSI) 是指多感应集成.耳皮石 (Otolith) 是一种耳皮石.这是前置体前置体.

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