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本研究采用了３种不同记忆负荷视觉信息选择的作业，对４个年龄组（９．８±０．７、１２．０±０．７、１４．１±０．８和１７．１±０．８），共２５９名正常青少年各作业时的工效，以及事件相关电位（ＥＲＰ）进行了分析。结果表明，在相同记忆负荷条件下，随年龄增长工效显著提高；反应时（ＲＴ）和ＥＲＰ的Ｐ_（３００）潜伏期（ＰＬ）明显缩短。在年龄相同情况下，随记忆负荷加大，工效显著下降；ＲＴ和ＥＲＰ的Ｐ_（３００）ＰＬ明显延长。ＲＴ和Ｐ_（３００）的ＰＬ与年龄呈负相关（ｒ＝－０．６）；与作业负荷呈正相关（ｒ＝０．９）。信息处理工效与ＥＲＰ综合分析，能有效地评价脑功能，适用于临床及工效学研究。
In this study, we selected three kinds of tasks of visual information selection with different memory load. Four age groups (9.8 ± 0.7, 12.0 ± 0.7, 14.1 ± 0.8 and 17.1 ± 0 .8), a total of 259 normal adolescents at work efficiency, and incident-related potentials (ERP) were analyzed. The results showed that under the same memory load, the ergonomics increased significantly with age, and the P_ (300) latency (PL) of reaction time (RT) and ERP were significantly shortened. With the same age, with the increase of memory load, the work efficiency decreased significantly; P_ (300) PL of RT and ERP significantly prolonged. PL of RT and P_ (300) was negatively correlated with age (r = -0.6), and positively correlated with workload (r = 0.9). Information processing efficiency and ERP comprehensive analysis, can effectively evaluate brain function, suitable for clinical and ergonomic studies.