Reexamination of effects of stimulus rate and number on the middle components of the averaged electroencephalic response.
Reexamination of effects of stimulus rate and number on the middle components of the averaged electroencephalic response.
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DOI：
10.3109/00206097509071756
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发表时间：
1975
期刊：
影响因子：
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通讯作者：
W. McFarland;M. C. Vivion;K. Wolf;R. Goldstein
中科院分区：
文献类型：
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作者：
W. McFarland;M. C. Vivion;K. Wolf;R. Goldstein
在改进的信号处理条件下检查了诱发皮层反应的中间成分（8-50毫秒）。512个点击刺激呈现在5个频率范围从1-16/秒到10个正常听力受试者。研究了32、64、128和512个刺激数和1、2、4、8和16/秒的刺激速率的影响。可识别和可重复的反应，发现只有128个刺激。刺激频率对中成分波形及其可识别性影响不大。通过改进的滤波条件的信号噪声比的增强被建议作为一个原因的能力，以确定中间组件，以较少的刺激。
The middle components of the evoked cortical response (8-50 msec) were examined under improved signal processing conditions. 512 click stimuli were presented at 5 rates ranging from 1-16/sec to 10 normal-hearing subjects. The influence of stimulus numbers of 32, 64, 128 and 512 and stimulus rates of 1, 2, 4, 8 and 16/sec was examined. Identifiable and repeatable responses were found with as few as 128 stimuli. Stimulus rate had little effect on middle component waveform or its identifiability. An enhancement of signal-to-noise ratio through improved filter conditions is suggested as one reason for the ability to identify middle components to fewer stimuli.