THE IDENTIFICATION OF NONLINEAR BIOLOGICAL-SYSTEMS - WIENER KERNEL APPROACHES

被引:51
作者
KORENBERG, MJ
HUNTER, IW
机构
[1] MCGILL UNIV,DEPT BIOMED ENGN,MONTREAL H3A 2T5,QUEBEC,CANADA
[2] MCGILL UNIV,MCGILL RES CTR INTELLIGENT MACHINES,MONTREAL H3A 2T5,QUEBEC,CANADA
[3] CANADIAN INST ADV RES,MONTREAL,QUEBEC,CANADA
关键词
SYSTEM IDENTIFICATION; WIENER KERNELS; NONLINEAR SYSTEMS;
D O I
10.1007/BF02368452
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
Detection, representation, and identification of nonlinearities in biological systems are considered. We begin by briefly but critically examining a well-known test of system nonlinearity, and point out that this test cannot be used to prove that a system is linear. We then concentrate on the representation of nonlinear systems by Wiener's orthogonal functional series, discussing its advantages, limitations, and biological applications. System indentification through estimating the kernels in the functional series is considered in detail. An efficient time-domain method of correcting for coloring in inputs is examined and shown to result in significantly improved kernel estimates in a biologically realistic system.
引用
收藏
页码:629 / 654
页数:26
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