仪表板提示符号尺寸设计对视觉工作的影响

应用认知神经学的方法研究仪表板上提示符号的设计准则,实验选取20名被试,用不同尺寸的提示符号诱发视觉工作记忆,并对被试的行为数据和脑电信号进行记录。行为数据上,小尺寸提示符号下,人们的反应速度略快;大尺寸提示符号下,人们的反应速度略慢;并且,高载荷(四个图标)的视觉工作记忆比低载荷(两个图标)的视觉工作记忆具有较长的反应时间和较低的反应正确率;结果具有显著性差异。应用事件相关电位的方法分析采集的脑电信号,得到高载荷的视觉工作记忆比低载荷诱发了更负的脑电波。结果表明,提示符号的尺寸对人的行为产生了影响。

The Influence of the Design in the Index Signal Sizes of the Instrumental Panel on Visual Work

The design criteria of index signals on the instrument are applied by the cognitive neuroscience methods. Twenty participants are employed to take the visual working memory task under the different sizes of index signals,and the behavior data and EEG signals are recorded. On the data of the behavior level, the response time was smaller under the small size of index signal than under the big one. The high-load task (four items) could evoke longer response time and lower accuracy than the low-load task (two items)does, the results of the test have a significant difference. The event related potential (ERP) method was applied to analyze the EEG signals while the high-load task could evoke more negative amplitude than the low-load task does. It is concluded that the design of the index signal size could affect human’s behavior.