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为探讨任务负荷水平及输入通道形式对脑事件相关电位（ＥＲＰ）Ｐ３波的影响，记录分析了１８名男性青年受试者在完成６种负荷水平、附任务形式不同的双任务过程中ＥＲＰ的Ｐ３波。双任务由手控追踪主任务（Ｔ）分别与Ｓｔｅｒｎｂｅｒｇ附任务（Ｓ）和Ｏｄｄｂａｌ附任务（Ｏ）组成（即ＴＳ和ＴＯ），其难度由主任务目标运动的速度和维度控制。结果发现：主任务难度增加，Ｐ３波潜时（ＬＡＴ）延长，波幅（ＡＭＰ）则与附任务形式有关，主、附任务为视、听不同输入通道的ＴＯ双任务时ＡＭＰ降低，主、附任务为视、视同一输入通道的ＴＳ双任务则ＡＭＰ升高。提示任务负荷水平及输入通道形式对脑事件相关电位（ＥＲＰ）Ｐ３波均有影响。
In order to explore the impact of task load level and input channel form on P3 wave of ERP (Brain Event-Related Potential), 18 young male subjects were recorded and analyzed during the two-task process of completing 6 tasks with different tasks P3 wave. The dual task consists of hand tracking the main task (T) with Sternberg attached task (S) and Oddbal attached task (O) (ie TS and TO) respectively, the difficulty of which is controlled by the speed and dimension of the main task’s target movement. The results showed that: the difficulty of the main task increased, P3 latency (LAT) prolonged, the amplitude of the AMP (AMP) attached to the form of tasks, the main tasks attached to view, listening to different input channels TO double task AMP decreased, Tasks for the visual, as the same input channel TS dual task then AMP rises. It is suggested that the level of task load and the type of input channel have an impact on P3 of brain related event (ERP).