Self-organizing maps with dynamic learning for signal reconstruction

被引：4

作者：

Cho, Jeongho ^{[1
]}

Paiva, Antonio R. C. ^{[1
]}

Kim, Sung-Phil ^{[1
]}

Sanchez, Justin C. ^{[1
]}

Principe, Jose C. ^{[1
]}

机构：

[1] Univ Florida, Computat NeuroEngn Lab, Gainesville, FL 32611 USA

来源：

NEURAL NETWORKS | 2007年 / 20卷 / 02期

关键词：

spike reconstruction; self-organizing map; brain-machine interface; vector quantization;

D O I：

10.1016/j.neunet.2006.12.002

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

Wireless Brain Machine Interface (BMI) communication protocols are faced with the challenge of transmitting the activity of hundreds of neurons which requires large bandwidth. Previously a data compression scheme for neural activity was introduced based on Self Organizing Maps (SOM). In this paper we propose a dynamic learning rule for improved training of the SOM on signals with sparse events which allows for more representative prototype vectors to be found, and consequently better signal reconstruction. This work was developed with BMI applications in mind and therefore our examples are geared towards this type of signals. The simulation results show that the proposed strategy outperforms conventional vector quantization methods for spike reconstruction. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：274 / 284

页数：11

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