沙普利·菲尔德斯 (Shapley Fields) 揭示了老鼠嗅觉球体在各种化学特征集中的化学特征组织
bioRxiv : the preprint server for biology
|March 10, 2025
概括
沙普利场揭示了小鼠嗅球中的弱化学物质组织,将化学特征映射到神经活动中. 这种方法有助于理解不同化学空间的嗅觉感知.
科学领域:
- 神经科学是一个神经科学.
- 计算神经科学是一种神经科学.
- 嗅觉系统研究 嗅觉系统研究
背景情况:
- 与其他感官模式相比,嗅球 (OB) 中化学特征的神经表现的理解仍然很差.
- 嗅觉刺激中缺乏自然坐标系,这使得OB中神经受体场和化学物质的表征变得复杂.
研究的目的:
- 引入沙普利场,一种类似于视网膜受体场的可解释方法,用于表征OB的神经活动.
- 为了研究小鼠背部OB化学特征敏感性的化学物质组织.
主要方法:
- 利用Shapley场来分析化学特征的空间分布,这些特征对OB质细胞调具有重要意义.
- 采用鼠标背部OB的广场光记录,以响应各种化学刺激.
- 将PubChem数据库中的化学特征与来自图形神经网络的化学特征进行比较.
主要成果:
- 沙普利场表明,在动物的背部OB中,化学特征敏感性的化学物质组织弱但一致.
- 确定的组织显示了专家策划和机器学习化学特征集之间的一致性.
- 沙普利场的主要组成部分往往与可从神经活动中恢复的可识别的化学分类组相对应.
结论:
- 沙普利场提供了一个有价值的,化学特征不可知的工具,用于调查OB中的嗅觉感知和神经编码.
- 这些发现表明,嗅觉球体的空间组织程度与化学特征处理有关.
- 这种方法促进了对大脑如何编码复杂的嗅觉信息的理解.
相关概念视频
Olfaction
40.5K
The sense of smell is achieved through the activities of the olfactory system. It starts when an airborne odorant enters the nasal cavity and reaches olfactory epithelium (OE). The OE is protected by a thin layer of mucus, which also serves the purpose of dissolving more complex compounds into simpler chemical odorants. The size of the OE and the density of sensory neurons varies among species; in humans, the OE is only about 9-10 cm2.
The olfactory receptors are embedded in the cilia of the...
The olfactory receptors are embedded in the cilia of the...
40.5K
Olfactory Receptors: Location and Structure
10.6K
The process of olfaction, also known as the sense of smell, is a sophisticated chemical response system. The specialized sensory neurons that facilitate this process, known as olfactory receptor neurons, are situated in an upper segment of the nasal cavity, known as the olfactory epithelium. Olfactory sensory neurons are bipolar, with their dendrites extending from the epithelium's apex into the mucus that lines the nasal cavity. Airborne molecules, when inhaled, traverse the olfactory...
10.6K
Physiology of Smell and Olfactory Pathway
13.2K
Humans detect odors with the help of specialized cells located in the upper part of the nasal cavity, called olfactory receptor neurons (ORNs). ORNs possess hair-like structures called cilia, which are receptive to sensations from the inhaled air. When an odorant molecule binds to a specific receptor on the cell of the cilia, it leads to a series of events that ultimately cause the ORN to send electrical signals to the olfactory bulb in the brain through the olfactory nerves.
The olfactory...
The olfactory...
13.2K


