【摘要】 本研究旨在客观评价训练者在不同专注度下的腹腔镜模拟训练效果。利用Brain Link采集脑电信号,计算样本熵和θ/β值来评价专注度;利用Tobii眼动仪采集眼动信号,计算完成时间、错误数、注视点个数来评价腹腔镜模拟训练效果。招募20名志愿者,其样本熵值小于0.77的为A组,大于0.77的为B组。结果表明,A组的样本熵值均小于B组,且变化较为平缓;而B组的样本熵值在前5次训练中变化较为平缓,后5次训练过程中变化较大。A组θ/β值较B组小,且整体变化趋势较为平缓。A组操作完成时间短,错误数少,注视点个数下降更快。本研究表明,训练者的专注度会影响训练效果。专注状态较好的A组,腹腔镜模拟训练技能水平提升快,学习效率高;而B组腹腔镜技能水平虽然也在提升,但达到学习稳定期所需要的时间更长。更多还原

【Abstract】 The aim of this study is to evaluate the effect of laparoscopic simulation training with different attention. Attention was appraised using the sample entropy and θ/β value, which were calculated according to electroencephalograph(EEG) signal collected with Brain Link. The effect of laparoscopic simulation training was evaluated using the completion time, error number and fixation number, which were calculated according to eye movement signal collected with Tobii eye tracker. Twenty volunteers were recruited in this study. Those with the sample entropy lower than0.77 were classified into group A and those higher than 0.77 into group B. The results showed that the sample entropy of group A was lower than that of group B, and fluctuations of A were more steady. However, the sample entropy of group B showed steady fluctuations in the first five trainings, and then demonstrated relatively dramatic fluctuates in the later five trainings. Compared with that of group B, the θ/β value of group A was smaller and shows steady fluctuations. Group A has a shorter completion time, less errors and faster decrease of fixation number. Therefore, this study reached the following conclusion that the attention of the trainees would affect the training effect. Members in group A, who had a higher attention were more efficient and faster training. For those in group B, although their training skills have been improved, they needed a longer time to reach a plateau.更多还原