数字化人机界面操作员目标定位眼动试验

为了验证数字化监控室操作员在监视过程中存在目标定位失误,并得到相关的目标定位失误率及反应时间,进行了眼动试验。试验设置了箭头、数字、图形及颜色4种目标信息,验证了目标定位延迟及目标定位失败两类目标定位失误的存在,并获得了被试对目标信息的首次进入时间及注视持续时间。通过对4种目标信息的目标定位眼动数据分析,发现不同的目标信息类型对目标信息区的眼动首次进入时间及注视持续时间的影响是显著的,对目标定位的总失误率影响也是显著的。通过SPSS软件分析发现,目标定位总失误率与首次进入时间及注视持续时间都存在线性相关关系。

Eye movement study in regard to the target location of the operator in the digitalized human-machine interface

The given article is dedicated to introducing an eye movement experiment in hoping to verify the target location-finding error in the digitalized human-machine interface so as to work out the related error rate and the responding time-length delay (including first fixation time and fixation duration length) for the target location.In the experiment,we have divided the computer screen into four quadrants,which are known as the arrow indicating sect,a digitalized sect,the sect for graphics and that for the color demonstration.The subjects to be asked for the inspection are invited to fulfill the target location tasks in accordance with the corresponding prompts.In addition,we have also laid out the experiment-independent variables for the target information demonstration which can be used to demonstrate the response and reaction results in the four quadrants,with the dependent variables being the first fixation time and the fixation time length delay for the subjects.In proceeding with the experiments,the subjects would be asked to read and memorize the instructions,and,then,repeat the target information on the testing interface in accordance with the relevant information prompts.The experiment results show that there exist two types of target errors,that is,the target-locating delay and the target-locating failure.Whereas the target location delaying rates can likely be similar to 0.75％,the target location failure error rate is merely close to 0.45％.Of all the said two kinds of errors,the arrow experimental data can help to indicate that the arrow target location delay error rate can be similar to 0.31％,while the target location failure rate accounts merely for only 0.17％.The first fixation time is 1 463 ms,and fixation duration time is 880 ms;the digital experimental data show that the digital target location delaying rate is roughly equal to 0.23％ in contrast with the target location failure being merely 0.16％.While the first fixation time is 1 488 ms,and the fixation time length is only 1 059 ms.On the one hand,the graphics experimental data show that the graphics target location delaying error rate is equal to 0.14％,on the other,the target location failure error rate is just 0.09％.As to the first fixation time,it is equal to 916 ms,the fixation duration time stands about 1 184 ms.Moreover,the color experimental data indicate that the color target location delay error rate is just about 0.03％,whereas the target location failure error rate is only 0.07％.In contrast to the first fixation time,which is 779 ms,the fixation time length accounts for 1 557 ms.The results of our study show that different types of target information signify the corresponding significant effects on the first fixation time,the fixation duration time and the target location error.Thus,it is based on the SPSS analysis that it would be possible for us to find that the target location error,the first fixation and the fixation time length tend to be linearly correlated.