论文标题

先前训练的任务动态影响远程运行期间的视觉力估计能力

Task Dynamics of Prior Training Influence Visual Force Estimation Ability During Teleoperation

论文作者

Chua, Zonghe, Jarc, Anthony M., Wren, Sherry, Nisky, Ilana, Okamura, Allison M.

论文摘要

机器人辅助的微创手术(RMI)缺乏触觉反馈是在手术过程中安全组织处理的潜在障碍。贝叶斯建模理论表明,与没有经验的外科医生相比,在RMIS期间,具有开放或腹腔镜手术经验的外科医生可以发展为组织刚度的先验。为了测试先前的触觉经验是否会提高远程操作的力估计能力,将33名参与者分配到三个训练条件之一:手动操纵,用力反馈的近距离操作或无力反馈的远程操作,并学会了将硅酮样品张紧到一组力值。然后,他们被要求执行张力任务,以及以前未经触觉的任务,而无需反馈而在近距离的一组武力值中。与远程操作组相比,手动组在训练的力量范围之外的张力任务中具有较高的力误差,但在低力水平下的触诊任务中显示出更好的速度敏锐函数。这表明训练方式的动力学会影响远程操作过程中的力估计能力,如果在与任务相同的动态下形成,则可以访问先前的触觉体验。

The lack of haptic feedback in Robot-assisted Minimally Invasive Surgery (RMIS) is a potential barrier to safe tissue handling during surgery. Bayesian modeling theory suggests that surgeons with experience in open or laparoscopic surgery can develop priors of tissue stiffness that translate to better force estimation abilities during RMIS compared to surgeons with no experience. To test if prior haptic experience leads to improved force estimation ability in teleoperation, 33 participants were assigned to one of three training conditions: manual manipulation, teleoperation with force feedback, or teleoperation without force feedback, and learned to tension a silicone sample to a set of force values. They were then asked to perform the tension task, and a previously unencountered palpation task, to a different set of force values under teleoperation without force feedback. Compared to the teleoperation groups, the manual group had higher force error in the tension task outside the range of forces they had trained on, but showed better speed-accuracy functions in the palpation task at low force levels. This suggests that the dynamics of the training modality affect force estimation ability during teleoperation, with the prior haptic experience accessible if formed under the same dynamics as the task.

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