[1]尚志刚,冯平艳,刘新玉,等.局部场电位γ频带能量对朝向调谐特性研究[J].郑州大学学报(工学版),2012,33(06):5-9.[doi:10.3969/j.issn.1671-6833.2012.06.002]
　SHANG Zhigang,FENG Pingyan,LIU Xin-yu,et al.Experimental Study on Orientation Tuning Characteristies Based onGamma Band Power of Local Field Potential[J].Journal of Zhengzhou University (Engineering Science),2012,33(06):5-9.[doi:10.3969/j.issn.1671-6833.2012.06.002]
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局部场电位γ频带能量对朝向调谐特性研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
33卷
期数:
2012年06期
页码:
5-9
栏目:
出版日期:
2012-11-10

文章信息/Info

Title:
Experimental Study on Orientation Tuning Characteristies Based onGamma Band Power of Local Field Potential
作者:
尚志刚; 冯平艳; 刘新玉; 等.
郑州大学 电气工程学院,河南郑州,450001, 郑州大学 电气工程学院,河南郑州,450001, 郑州大学 电气工程学院,河南郑州,450001, 郑州大学 电气工程学院,河南郑州,450001, 郑州大学 电气工程学院,河南郑州,450001
Author(s):
SHANG Zhigang; FENG Pingyan; LIU Xin-yu; etc;
School of Electrical Engineering,Zhengzhou University, Zhengzhou 450001 , China
关键词:
初级视觉皮层;  局部场电位;  微电极阵列;  朝向调谐特性
Keywords:
primary visual cortex;  loeal field potential;  microelectrode array;  orientation tuning characteristics
分类号:
TN911.73R338.8
DOI:
10.3969/j.issn.1671-6833.2012.06.002
摘要:
朝向调谐特性是初级视觉皮层(V1区)神经元感受野的主要特性之一.关于神经元朝向调谐特性的研究大多从锋电位(spike)发放率的角度出发,然而spike信号易受噪声干扰,在检测和采集过程中经常会发生假阳性、假阴性等问题,影响了后续分析的结果.研究了神经元局部场电位(LFP)信号γ频带能量对光栅朝向的调制机制,发现LFP γ频带能量与刺激朝向有着较强的相关性,携带视觉刺激朝向信息,并且利用LFP γ频带能量和spike发放率获得的神经元偏爱朝向一致率达到了67.4％,朝向调谐一致率达到了87.2％；在低信噪比的情况下,LFP比spike有更强的鲁棒性.因此可知,提取LFP γ频带能量是获得V1区神经元朝向调谐特性的又一有效途径,而且在低信噪比时比spike发放率更有优势.
Abstract:
Orientation tuning characteristic is one of the main features in neuron from primary visual cortex’Vl ). Most studies of orientation tuning characteristics in neuron are based on the spike rating, however,spikes are suseeptible to noise and often have some questions in the detection and sorting, such as false posi.tive , false negative and so on, which affected spikes analysis results. In this paper, neuron orientation tuningcharacteristics to raster based on gamma band power of local field potential ( LFP) are studied. We found thatgamma band power carries information about the visual stimulus, and has a strong correlation with orienta.tions. The test results of simulation and experiment show that the concordance rate of gamma power and spikepreferenced orientation reaches 67,4%6 , orientation tuning reaches 87.2% ; in the case of low signal-to-noiseratio ( SNR ) , robustness of LFP is stronger than spike. Therefore, LFP gamma band power is also an effectiveway to acquire V1 orientation tuning characteristics, especially in the low SNR, which has more advantagesthan spike in orientation tuning characteristics form Vl neuron.

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[1]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(03):1.[doi:10.3969/j.issn.1671-6833.2013.03.001]
　SHILi,LI Xiao·liang,WANG Zhi-zhong.The Feature Selective Properties of the Gamma-oscillation of the Local Field Potentials in Rat’S Primary Visual Cortex[J].Journal of Zhengzhou University (Engineering Science),2013,34(06):1.[doi:10.3969/j.issn.1671-6833.2013.03.001]

更新日期/Last Update: 1900-01-01