郑州大学学报（工学版）2012，Vol.33Issue(6)：5-9,5.DOI:10.3969/j.issn.1671-6833.2012.06.002
局部场电位γ频带能量对朝向调谐特性研究
Experimental Study on Orientation Tuning Characteristics Based on Gamma Band Power of Local Field Potential
摘要
Abstract
Orientation tuning characteristic is one of the main features in neuron from primary visual cortex (V1). Most studies of orientation tuning characteristics in neuron are based on the spike rating, however, spikes are susceptible to noise and often have some questions in the detection and sorting, such as false positive, false negative and so on, which affected spikes analysis results. In this paper, neuron orientation tuning characteristics to raster based on gamma band power of local field potential (LFP) are studied. We found that gamma band power carries information about the visual stimulus, and has a strong correlation with orientations. The test results of simulation and experiment show that the concordance rate of gamma power and spike preferenced orientation reaches 67.4% , orientation tuning reaches 87.2% ; in the case of low signal-to-noise ratio (SNR) , robustness of LFP is stronger than spike. Therefore, LFP gamma band power is also an effective way to acquire V1 orientation tuning characteristics, especially in the low SNR, which has more advantages than spike in orientation tuning characteristics form V1 neuron.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Key words
primary visual cortex/ local field potential/ microelectrode array/ orientation tuning characteristics分类
信息技术与安全科学引用本文复制引用
尚志刚,冯平艳,刘新玉,牛晓可,万红..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(6):5-9,5.基金项目
国家自然科学基金资助项目(60971110) （60971110）
