国际生物医学工程杂志
國際生物醫學工程雜誌
국제생물의학공정잡지
INTERNATIONAL JOURNAL OF BIOMEDICAL ENGINEERING
2014年
4期
197-200
,共4页
冯莉%谢小波%崔红岩%徐圣普%胡勇
馮莉%謝小波%崔紅巖%徐聖普%鬍勇
풍리%사소파%최홍암%서골보%호용
偶极子源分析%跨通道联合刺激%事件相关电位%视觉刺激%听觉刺激
偶極子源分析%跨通道聯閤刺激%事件相關電位%視覺刺激%聽覺刺激
우겁자원분석%과통도연합자격%사건상관전위%시각자격%은각자격
Dipole source analysis%Cross-modality stimuli%Event-related potentials%Visual stimuli%Auditory stimuli
目的 运用偶极子源分析方法分析视(V)、听(A)单独刺激和视听(VA)联合刺激早期阶段脑功能区的动态变化.方法 采用64道脑电采集系统,记录14例志愿者在视觉、听觉和视听联合刺激下诱发的事件相关电位(ERPs),并将这3种任务的早期阶段分成不同子时间段进行偶极子源分析.结果 视觉、听觉刺激诱发的早期偶极子源定位在特定脑皮层功能区,并且偶极子的位置和强度随时间发生变化.结论 脑功能区在视听刺激的早期阶段(＜150 ms)对感觉信息存在动态的处理过程.
目的 運用偶極子源分析方法分析視(V)、聽(A)單獨刺激和視聽(VA)聯閤刺激早期階段腦功能區的動態變化.方法 採用64道腦電採集繫統,記錄14例誌願者在視覺、聽覺和視聽聯閤刺激下誘髮的事件相關電位(ERPs),併將這3種任務的早期階段分成不同子時間段進行偶極子源分析.結果 視覺、聽覺刺激誘髮的早期偶極子源定位在特定腦皮層功能區,併且偶極子的位置和彊度隨時間髮生變化.結論 腦功能區在視聽刺激的早期階段(＜150 ms)對感覺信息存在動態的處理過程.
목적 운용우겁자원분석방법분석시(V)、은(A)단독자격화시은(VA)연합자격조기계단뇌공능구적동태변화.방법 채용64도뇌전채집계통,기록14례지원자재시각、은각화시은연합자격하유발적사건상관전위(ERPs),병장저3충임무적조기계단분성불동자시간단진행우겁자원분석.결과 시각、은각자격유발적조기우겁자원정위재특정뇌피층공능구,병차우겁자적위치화강도수시간발생변화.결론 뇌공능구재시은자격적조기계단(＜150 ms)대감각신식존재동태적처리과정.
Objective Dipole source analysis was employed to investigate the transient changes in brain mechanisms at earlier latencies.Methods Fourteen healthy volunteers were recruited in this research and evoked event-related potentials (ERPs) of unimodal and bimodal visual auditory stimuli were recorded by 64-electrodes electroencephalograph (EEG) recording system.All these earlier phases of the stimuli were divided into several subphases by specific time window for source analysis.Results The results showed that ERPs sources were mainly generated from visual and audio cortex,and there were changes in the location and strength of the dipole sources in each sub-phase.Conclusions The result of this study implies a serial processing of sensory information in human cortices in early phase of visual and auditory stimuli.
