郑州大学学报（工学版）2013，Vol.34Issue(3)：1-5,5.DOI:10.3969/j.issn.1671-6833.2013.03.001
大鼠初级视皮层局部场电位γ振荡特性研究
The Feature Selective Properties of the Gamma-oscillation of the Local Field Potentials in Rat's Primary Visual Cortex
摘要
Abstract
In this paper,a method was presented to determine the band of gamma oscillation,and the characteristics of the gamma oscillation response to simple graphics with different topologies was explored.First,the method combining wavelets transform and power spectrum was adopted to determine the accurate gamma band range of the local field potentials in rat' s primary visual cortex.Secondly,the latency periods of gamma oscillation for simple graphics stimulus with different topologies were calculated and the curves of mutual information between the stimulus sequences and power spectrums in gamma band were estimated.The means,maximum values and the frequencies at the maximum values of the curves were extracted as the feature parameters.Finally,these characteristics were analysed statistically with one-way analysis of variance.The experiment results show that under visual stimulations the gamma-band oscillations exist obviously in the primary visual cortex (V1) of anesthetized rat.The gamma oscillations were significantly selective to the topological features of simple graphic stimulations.关键词
初级视皮层/局部场电位/拓扑特征/互信息/γ振荡Key words
primary visual cortex/ local field potential/ topological characteristic/ mutual information gamma oscillation分类
信息技术与安全科学引用本文复制引用
师黎,黎晓亮,王治忠..大鼠初级视皮层局部场电位γ振荡特性研究[J].郑州大学学报（工学版）,2013,34(3):1-5,5.基金项目
国家自然科学基金资助项目(60971110) （60971110）
