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The Effects of Potassium Currents on the Synchronization of Electrically Coupled Neural Oscillators.

机译:钾电流对电耦合神经振荡器同步的影响。

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摘要

Synchronous oscillatory activity in cortical neurons is thought to be important for higher order cognitive functions [Gray et al., 1992]. It is believed that electrical coupling between inhibitory neurons is at least partially responsible for synchronization. This is supported by both experimental [e.g. Galarreta and Hestrin, 2001; Gibson et al., 1999; Beierlein et al., 2000; Amitai et al., 2002] and theoretical [Chow and Kopell, 2000; Lewis and Rinzel, 2003; Pfeuty et al., 2003; Bem et al., 2005; Di Garbo et al., 2005; Mancilla et al., 2007] studies.;Mathematical models of electrically coupled cortical neurons show that electrical coupling also can support stable antisynchronous oscillations [Skinner et al., 1999; Pfeuty et al., 2003; Nomura et al., 2003; Lewis and Rinzel, 2004; Di Garbo et al., 2005; Mancilla et al., 2007]. However, antisynchronous activity in pairs of real cortical neurons connected solely by electrical coupling has not been found experimentally [Mancilla et al., 2007, see also Merriam et al., 2005; Gibson et al., 2005]. It is not understood why only robust synchrony is observed to the exclusion of antisynchrony. Several modeling studies have investigated the roles of intrinsic membrane conductances on phase-locking in electrical coupled cells and found seemingly contradictory results. Pfeuty et al. (2003) showed that potassium currents promoted synchrony while Mancilla et al. (2007) found that potassium currents promoted anti-phase behavior. In this thesis, we seek to further understand how potassium currents influence the synchronization of electrically coupled neural oscillators.
机译:皮质神经元中的同步振荡活动被认为对高级认知功能很重要[Gray et al。,1992]。相信抑制性神经元之间的电耦合至少部分负责同步。这两个实验[例如Galarreta和Hestrin,2001; Gibson et al。,1999; Science。 Beierlein等人,2000; Amitai等人,2002年)和理论上的[Chow and Kopell,2000年;刘易斯和林泽尔,2003年; Pfeuty et al。,2003; J.Am.Chem.Soc。,2003,11:1593。 Bem等,2005; Di Garbo等,2005; Mancilla et al。,2007]研究;电耦合皮层神经元的数学模型表明,电耦合也可以支持稳定的反同步振荡[Skinner et al。,1999; Pfeuty et al。,2003; J.Am.Chem.Soc。,2003,11:1593。 Nomura et al。,2003;刘易斯和林泽尔,2004年; Di Garbo等,2005; Mancilla等,2007]。然而,在实验上还没有发现仅通过电耦合连接的成对的真实皮层神经元中的反同步活性[Mancilla等,2007;另请参见Merriam等,2005; Merriam等,2005。 Gibson等,2005]。还不理解为什么只观察到鲁棒的同步,却排除了反同步。几项建模研究研究了固有的膜电导在电耦合细胞中锁相中的作用,并发现了看似矛盾的结果。 Pfeuty等。 (2003年)表明,钾电流促进同步,而曼奇拉等。 (2007)发现钾电流促进了反相行为。在本文中,我们试图进一步了解钾电流如何影响电耦合神经振荡器的同步。

著录项

  • 作者

    Middleton, Colin Baker.;

  • 作者单位

    University of California, Davis.;

  • 授予单位 University of California, Davis.;
  • 学科 Applied Mathematics.
  • 学位 M.S.
  • 年度 2011
  • 页码 134 p.
  • 总页数 134
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-17 11:45:03

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