Polich J, Eischen S E, Collins G E
Department of Neuropharmacology, TPC-10, Scripps Research Institute, La Jolla, CA 92037.
Electroencephalogr Clin Neurophysiol. 1994 May;92(3):253-61. doi: 10.1016/0168-5597(94)90068-x.
The P3(00) event-related brain potential (ERP) was elicited with auditory stimuli to compare 2 different discrimination tasks. The oddball paradigm presented both target and standard tones; the single-stimulus paradigm presented a target but no standard tone stimulus. Experiment 1 manipulated target stimulus probability (0.20, 0.50, 0.80) and produced highly similar P3 amplitude and latency results across probability levels for each paradigm. Experiment 2 factorially varied inter-stimulus interval (2 sec, 6 sec) and target stimulus probability (0.20, 0.80). P3 amplitude and latency were highly similar for both the oddball and single-stimulus procedures across all conditions.
通过听觉刺激诱发P3（00）事件相关脑电位（ERP），以比较两种不同的辨别任务。奇偶数范式同时呈现目标音调和标准音调；单刺激范式只呈现目标音调，不呈现标准音调刺激。实验1操纵目标刺激概率（0.20、0.50、0.80），并在每个范式的概率水平上产生了高度相似的P3波幅和潜伏期结果。实验2对刺激间隔（2秒、6秒）和目标刺激概率（0.20、0.80）进行析因变化。在所有条件下，奇偶数范式和单刺激程序的P3波幅和潜伏期都高度相似。
