基于fNIRS的AR引导穿刺训练系统的工效与认知负荷研究

Ergonomics and Cognitive Load of AR Guided Puncture Training System Based on fNIRS

中文关键词: AR手术导航  fNIRS  神经人因学  NASA-TLX

英文关键词: AR surgical navigation  fNIRS  neuroergonomics  NASA-TLX

中文摘要:

      目的 基于fNIRS对AR引导穿刺训练的手术导航系统展开神经人因学研究，探究使用者与系统交互时的工效与认知负荷。方法 实验分为实验组(AR组)与对照组(B超组)，被测对象在各自平台下完成穿刺任务。采集并处理任务中被测对象的近红外信号，提取HbO2浓度相关的比例系数β，结合任务绩效、NASA-TLX主观评分进行统计分析。结果 实验组(AR组)与对照组(B超组)相比，穿刺任务中前额叶激活弱、穿刺时间短、成功率高，2组存在显著性差异(P<0.05);在NASA-TLX得分中实验组(AR组)低于对照组(B超组)，2组存在显著性差异(P<0.05)。主客观评价结果表明实验组(AR组)认知负荷低。结论 AR技术在穿刺训练中比B超工作效率高、认知负荷低，表明AR引导的穿刺训练系统可用性更好，为术前穿刺训练指导提供了一种新的方法。

英文摘要:

      The aim is to conduct neuroergonomics research on the surgical navigation system of AR-guided puncture training based on fNIRS, and explore the work efficiency and cognitive load when users interact with the system. The experiments were divided into experimental group (AR group) and control group (B-ultrasound diagnostics group). The subjects completed the puncture task under their respective platforms, collecting and processing the near-infrared signals in the task, then extracted HbO2 concentration-related proportional coefficient β, and finanlly the task performance and NASA-TLX subjective score were combined for statistical analysis. The results showed that compared with the B-ultrasound group, the AR group has weak prefrontal lobe activation, short puncture time, and high success rate in the puncture task. and there were significant differences between the two groups (P<0.05). The NASA-TLX score of the experimental group was lower than that of the control group, indicating that the mental load of the AR group was low, and there was a significant difference between the two groups (P<0.05). AR technology has higher work efficiency and lower cognitive load than B-ultrasound in puncture training, indicating that the AR-guided puncture training system is more usable and provides a new method for preoperative puncture training guidance.