神经系统的简并性与序空间编码分析  

Analyses of degeneracy in neural system and neural code

作　　者：张宏[1,2] 刘淑芳[1] 钱鸣奇[1,2] 童勤业[1,2,3] 

机构地区：[1]浙江大学生物医学工程系,杭州310027 [2]浙江大学生物医学工程教育部重点实验室,杭州310027 [3]浙江大学神经信息中心,杭州310027

出　　处：《物理学报》2009年第10期7322-7329,共8页Acta Physica Sinica

基　　金：国家重点基础研究发展计划(批准号:5132103ZZT21B);国家重点基础研究发展计划前期专项基金(批准号:2002CCA01800);国家自然科学基金(批准号:60871085)资助的课题~~

摘　　要：Edelman提出了神经系统中存在简并现象,但并未说明简并在神经系统中的具体形式和作用.文中从序空间理论出发,以神经回路为讨论基础,具体讨论了双耳定向的神经回路中可能出现的简并网络,以及各种网络被简并的方法.把简并现象的讨论和编码的讨论结合起来,对神经网络中的简并现象有了一个具体的认识.文中虽然是由纯理论推导的结果,但所得回路包含了被广泛承认的Jeffress模型,因此也间接证明了该理论也有一定的生物学基础.Edelman has proposed that there are degeneracy phenomena in neural system.However,he did not discuss the modality and function about degeneracy in neuron network.In this paper,the phenomenon of degeneracy in neuron circuit of binaural localization is studied on the basis of the ordered space,and some methods of degeneracy for the neural networks are discussed.By combing the phenomenon of degeneracy with neuron coding,we can better understand the degeneracy phenomenon.Although the results we obtained are rationalistic, the Jeffress model, which is widely accepted, is covered by this circuit. Therefore, the theory proposed in the paper also has its biological basis.

关 键 词：简并 神经编码 序空间 双耳声源定向 

分 类 号：Q42[生物学—神经生物学]