桶皮质中的表示漂移是受体场依赖的受体场.
Ahmed Alisha1, Voelcker Bettina1, Peron Simon1
1Center for Neural Science, New York University, 4 Washington Pl., Rm. 621, New York, NY 10003.
bioRxiv : the preprint server for biology
|November 14, 2023
概括
即使神经活动发生变化,稳定的行为也可以持续存在. 在体感皮质 (vS1) 中的一小群广泛调的神经元显示出高稳定性,可能保持一致的物体检测.
科学领域:
- 神经科学是一个神经科学.
- 系统神经科学 系统神经科学
- 计算神经科学是一种神经科学.
背景情况:
- 皮层神经群体通常会随着时间的推移而改变活动,这种现象被称为代表性漂移.
- 尽管这种神经不稳定,但保持稳定的行为是理解大脑功能的一个重大挑战.
研究的目的:
- 为了研究如何保持行为稳定,在代表漂移在主振动体感皮质 (vS1) 的代表漂移.
- 在正在进行的神经变化的背景下,确定与稳定性相关的特定神经元特性.
主要方法:
- 在几周内记录了鼠标vS1表面层中的胡须触摸反应.
- 监控小鼠执行稳定的物体检测任务,使用两个胡须.
- 分析了神经元调特性,受体场大小和对对应关系.
主要成果:
- 触摸反应神经元的总数保持不变,但个体神经元的反应随着时间的推移而改变.
- 与狭窄调节的神经元相比,具有更广泛的受体场的神经元表现出更大的稳定性.
- 神经元的转换是非随机的;不响应的神经元在更广泛的调整之前开发了更窄的调整,而具有更高相关性的广泛调整的神经元更稳定.
结论:
- 在vS1中,广泛调,同步活跃的触摸神经元的子群体表现出增强的稳定性.
- 这些稳定的神经元可能在代表性漂移期间确保行为一致性方面发挥着至关重要的作用.
- 了解神经元稳定机制是解读大脑如何保持强大行为的关键.
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