TIME CONSTANT IN P300 RECORDING
TIME CONSTANT IN P300 RECORDING
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DOI：
10.1111/j.1469-8986.1979.tb01440.x
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发表时间：
1979-01-01
期刊：
影响因子：
3.7
通讯作者：
DONCHIN, E
中科院分区：
文献类型：
--
作者：
DUNCANJOHNSON, CC;DONCHIN, E
用一个标准计数任务来说明记录系统的时间常数对P300分量的振幅和波形的影响。向1名男性受试者提供1500 Hz （p = 0.10）和1000 Hz （p = 0.90）的随机音调序列。在0.1、0.3、1.0和10.0 s时间常数下同时记录CZ和PZ的脑电。事件相关电位波形受时间常数的影响显著：时间常数越短，P300和慢波分量的振幅越小。
A standard counting task was used to illustrate the effect of the time constant of the recording system on the amplitude and waveform of the P300 component. A random sequence of 1500 Hz (p = .10) and 1000 Hz (p = .90) tones was presented to 1 human male subject. The EEG from CZ and PZ was recorded simultaneously at time constants of 0.1, 0.3, 1.0 and 10.0 s. The ERP [event-related potential] waveforms was markedly affected by the time constant: the shorter the time constant, the smaller the amplitude of both the P300 and slow wave components.