在早期的嗅觉网络中,增益调制和气味度不变
Emiliano Marachlian1,2, Ramón Huerta3, Fernando F Locatelli1
1Instituto de Fisiología Biología Molecular y Neurociencias (IFIByNE-UBA-CONICET) and Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina.
PLoS computational biology
|June 21, 2023
概括
在天线叶的GABA受体通过调节信号幅度和神经招募来减少气味度的依赖性. 这种处理使不同度的气味感知更稳定,这对于可靠的嗅觉识别至关重要.
科学领域:
- 神经科学是一个神经科学.
- 嗅觉系统研究研究 嗅觉系统研究
- 计算神经科学是一种计算神经科学.
背景情况:
- 嗅觉受体使用组合代码来检测多种气味.
- 高度的气味可以通过招募低亲和度受体来改变气味感知.
研究的目的:
- 调查天线叶信号处理如何减少气味度依赖.
- 阐明GABA受体在塑造嗅觉信息传输中的作用.
主要方法:
- 成像用于监测神经活动.
- 对GABA受体的药理学操纵.
- 开发一个真实的天线叶的数学模型.
主要成果:
- GABA受体以度依赖的方式降低气味唤起的信号幅度和招募的淋巴细胞数量.
- 阻断GABA受体减少了不同气味度的淋巴细胞活动模式的相关性.
- 叶模型复制了关键的实验发现,并建议了度不变气味识别的机制.
结论:
- 在天线叶的GABAergic信号传递对于稳定气味表征至关重要.
- 这些发现提供了对度不变气味识别神经机制的见解.
- 该研究为了解嗅觉处理和开发人工嗅觉传感器提供了一个框架.
相关概念视频
01:25Olfaction
44.5K
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...
44.5K
01:20Physiology of Smell and Olfactory Pathway
8.8K
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...
8.8K
01:03Olfactory Receptors: Location and Structure
9.4K
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...
9.4K