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首页> 外文期刊>Journal of Computational Neuroscience >Calibration of the head direction network: a role for symmetric angular head velocity cells
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Calibration of the head direction network: a role for symmetric angular head velocity cells

机译：头部方向网络的校准：对称角速度传感器的作用

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摘要

Continuous attractor networks require calibration. Computational models of the head direction (HD) system of the rat usually assume that the connections that maintain HD neuron activity are pre-wired and static. Ongoing activity in these models relies on precise continuous attractor dynamics. It is currently unknown how such connections could be so precisely wired, and how accurate calibration is maintained in the face of ongoing noise and perturbation. Our adaptive attractor model of the HD system that uses symmetric angular head velocity (AHV) cells as a training signal shows that the HD system can learn to support stable firing patterns from poorly-performing, unstable starting conditions. The proposed calibration mechanism suggests a requirement for symmetric AHV cells, the existence of which has previously been unexplained, and predicts that symmetric and asymmetric AHV cells should be distinctly different (in morphology, synaptic targets and/or methods of action on postsynaptic HD cells) due to their distinctly different functions.
机译：连续的吸引子网络需要校准。大鼠头部方向（HD）系统的计算模型通常假定保持HD神经元活动的连接是预先连接的且是静态的。这些模型中正在进行的活动依赖于精确的连续吸引子动力学。当前尚不知道如何精确地布线这样的连接，以及面对不断出现的噪声和干扰如何保持准确的校准。我们的高清系统的自适应吸引子模型使用对称角头速度（AHV）单元作为训练信号，表明高清系统可以学习从性能不佳，不稳定的启动条件中支持稳定的发火模式。拟议的校准机制提出了对对称AHV细胞的需求，该存在以前无法解释，并预测对称和非对称AHV细胞应有明显不同（在形态，突触靶标和/或对突触后HD细胞的作用方法上）由于它们的功能截然不同。

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  • 来源
    《Journal of Computational Neuroscience》 |2010年第3期|P.527-538|共12页
  • 作者

    Peter Stratton; Gordon Wyeth; Janet Wiles;

  • 作者单位

    School of Information Technology and Electrical Engineering,The University of Queensland,Queensland, Brisbane, Australia Queensland Brain Institute, The University of Queensland,Queensland, Brisbane, Australia;

    rnSchool of Information Technology and Electrical Engineering,The University of Queensland,Queensland, Brisbane, Australia;

    rnSchool of Information Technology and Electrical Engineering,The University of Queensland,Queensland, Brisbane, Australia Queensland Brain Institute, The University of Queensland,Queensland, Brisbane, Australia;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    head direction; attractor; calibration; angular head velocity; symmetric cells;

    机译：头方向吸引子校准;角头速度对称细胞;

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