在嗅球球体质体中,中心周围抑制
J L Aungst1, P M Heyward, A C Puche
1Department of Anatomy and Neurobiology, Program in Neuroscience, The University of Maryland School of Medicine, Room 222, 685 West Baltimore Street, Baltimore, Maryland 21201, USA.
Nature
|December 12, 2003
概括
短轴突细胞连接嗅球球囊,形成一个新的抑制网络. 这种电路通过增加对比度和完善神经反应来增强气味信号处理.
科学领域:
- 神经科学是一个神经科学.
- 感官处理 感官处理
- 嗅觉系统 嗅觉系统
背景情况:
- 围绕中心的抑制对于感官系统的对比度增强至关重要.
- 嗅球球囊细胞之间的相互作用尚未得到充分理解.
研究的目的:
- 为了研究嗅觉球体质体之间的功能相互作用.
- 阐明短轴突细胞在嗅觉处理中的作用.
主要方法:
- 嗅觉球中的电生理学记录.
- 跨球体连接的解剖学追踪.
- 突触生理学的研究.
主要成果:
- 短轴突细胞延长长长的细胞间轴突,连接遥远的球粒.
- 这些细胞激发抑制性危险质神经元.
- 这形成了一个在中心的,外围的电路,抑制了 mitra 细胞.
结论:
- 在嗅球中存在一种新的,远程的,球体间抑制电路.
- 这一电路与现有的抑制途径一起,增强了时空气味反应.
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