摘要
目的:研究视觉、听觉脑区在认知过程中的同步性.方法:设计了视觉、听觉同时刺激模式下的脑电实验,采用128道高密度脑电采集系统,记录了14位年龄在18～29岁之间的在校男性大学生的诱发脑电信号数据,并运用希尔伯特(Hilbert)相位同步算法对视觉、听觉区域的事件相关电位(ERP)进行同步量化.结果:在视听觉同时利用模式下,视觉脑区(枕叶)和听觉脑区(颞叶)之间的同步指数明显大于它们与其他脑区间的同步指数.结论:人在感知和认知事物时,相关的脑区间自动产生了神经活动的同步化.
Objective:To study the synchronization between visual area and audio area during cogni tive processing . Methods: An experiment of EEG signal by visual -audio simultaneous stimulus was designed , and the evoked polenlials(EPs) data of undergraduated male students aged from 18 - 29 years were recorded by high - density 128 scalp electrodes , and the averaged event-related potentials (ERPs) data were utilized to get the synchronization index by means of Hilbert transform phase method . Results: Under the condition of visual - audio stimulus , the synchronous index between visual area and audio area was higher than the one between visual area or audio area and others . Conclusions: Synchronization of nervous activity between relative brain area might occur automatically when one is cognizing .
出处
《临床神经电生理学杂志》
2005年第1期4-6,10,共4页
Journal of Clinical Electroneurophysiology
基金
国家自然科学基金资助项目(编号:90208003)教育部科学技术研究重点项目(02065)高等学校博士学科点专项科研基金973项目(2003CB716106)
