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  • 标题:Noise shaping in populations of coupled model neurons
  • 本地全文:下载
  • 作者:D. J. Mar ; C. C. Chow ; W. Gerstner
  • 期刊名称:Proceedings of the National Academy of Sciences
  • 印刷版ISSN:0027-8424
  • 电子版ISSN:1091-6490
  • 出版年度:1999
  • 卷号:96
  • 期号:18
  • 页码:10450-10455
  • DOI:10.1073/pnas.96.18.10450
  • 语种:English
  • 出版社:The National Academy of Sciences of the United States of America
  • 摘要:Biological information-processing systems, such as populations of sensory and motor neurons, may use correlations between the firings of individual elements to obtain lower noise levels and a systemwide performance improvement in the dynamic range or the signal-to-noise ratio. Here, we implement such correlations in networks of coupled integrate-and-fire neurons using inhibitory coupling and demonstrate that this can improve the system dynamic range and the signal-to-noise ratio in a population rate code. The improvement can surpass that expected for simple averaging of uncorrelated elements. A theory that predicts the resulting power spectrum is developed in terms of a stochastic point-process model in which the instantaneous population firing rate is modulated by the coupling between elements.
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