蝙蝠的嗅觉系统中的神经元缩放
Thomas P Eiting1, Timothy D Smith2, Nancy G Forger3
1Graduate Program in Organismic and Evolutionary Biology, 221 Morrill Science Center, University of Massachusetts, Amherst, Massachusetts, USA.
Anatomical record (Hoboken, N.J. : 2007)
|September 2, 2023
概括
吃水果和的蝙蝠比吃昆虫的蝙蝠拥有更多的嗅觉神经元和质,这表明饮食会影响嗅觉神经解剖学. 嗅觉球泡大小仍然是一个有效的比较指标.
科学领域:
- 感官生物学 感官生物学
- 神经解剖学是一个神经解剖学.
- 嗅觉是一种嗅觉.
背景情况:
- 嗅觉球泡大小是对比性嗅觉能力研究的常见指标.
- 最近的研究质疑嗅球大小的广泛适用性.
- 饮食是影响许多物种感官能力的重要因素.
研究的目的:
- 为了研究饮食如何影响菲洛斯托米德蝙蝠的嗅觉神经解剖学.
- 为了比较不同饮食的蝙蝠中嗅觉感官神经元 (OSNs),额头细胞 (MCs) 和质细胞的数量.
- 评估这些神经解剖学指标与嗅觉球体体积之间的关系.
主要方法:
- 具有不同饮食 (水果,花蜜,昆虫) 的菲洛斯托米德蝙蝠的比较神经解剖学分析.
- 作为嗅觉功能的指标的OSNs,MCs和质细胞的量化.
- 对神经解剖学变量的全度分析与嗅觉球体体积相比.
主要成果:
- 与吃昆虫的蝙蝠相比,吃水果的蝙蝠表现出明显更高的OSN和质细胞数量.
- 在吃水果和吃昆虫的组之间,在MC数量上没有发现显著的差异.
- 在OSNs,MCs,淋巴细胞和嗅觉球体体积之间的全度关系中观察到同度.
结论:
- 饮食差异与蝙蝠嗅觉中的特定神经解剖学适应相关.
- 除了嗅球大小之外的神经解剖学测量,提供了对嗅觉能力的机械洞察力.
- 嗅觉球体体积仍然是生物体水平上对比性嗅觉研究的相关指标.
更多相关视频
12:13Multi-unit Recording Methods to Characterize Neural Activity in the Locust Schistocerca Americana Olfactory Circuits
Published on: January 25, 2013
27.1K
11:08Recording Temperature-induced Neuronal Activity through Monitoring Calcium Changes in the Olfactory Bulb of Xenopus laevis
Published on: June 3, 2016
7.3K
相关概念视频
01:25Olfaction
44.4K
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...
44.4K
01:03Olfactory Receptors: Location and Structure
9.3K
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...
9.3K
01:20Physiology of Smell and Olfactory Pathway
8.7K
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...
8.7K