Abstract:

P300 has the property of stable wave and constant latency， and can be extracted from EEG by superposition. P300 psychological testing is an important supplement to traditional psychological testing technology as it can detect the changes of nerve electricity in advanced cognitive activities and thus becomes a window for peeping psychological activities. In practice， it is necessary to follow basic laws of psychological testing， operate strictly according to scientific procedures， prepare carefully for testing stimulus， pass on guidelines before testing， conduct standard software and hardware operations， and analyze the testing results objectively.

Key words: psychological testing, P300, testing procedure

摘要：

P300有波形恒定和潜伏期恒定两个特性，可以通过叠加将P300从EEG中提取出来。P300心理测试利用认知过程中的P300指标的变化探测高级认知活动中的神经电变化，成为一个“窥视”心理活动的“窗口”，是对传统心理测试技术的重要补充。在测试实践中要遵循心理测试基本规律，严格按照科学程序进行操作，对测试刺激要精心准备，测试前要进行测试指导，软硬件操作要规范，测试结果分析要科学客观。

关键词: 心理测试, P300, 测试程序