Perceiving haptic feedback in virtual reality simulators
Perceiving haptic feedback in virtual reality simulators
复制标题
在虚拟现实模拟器中感知触觉反馈
DOI：
10.1007/s00464-012-2745-y
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
M. Chmarra
中科院分区：
文献类型：
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作者：
C. Våpenstad;E. F. Hofstad;T. Langø;R. Mårvik;M. Chmarra
背景为了提高患者的安全性，心理学腹腔镜技能的培训通常在手术室外的虚拟现实（VR）模拟器上进行。已经发现触觉感觉影响腹腔镜检查中的心理表现。因此，触觉反馈的仿真是VR仿真的一个重要方面。一些VR模拟器试图用配备触觉反馈的手柄来模拟这些感觉。我们进行了一项调查，腹腔镜外科医生如何感知处理与无haptic feedback.MethodsSurgeons在腹腔镜检查的经验不同的水平，要求测试两个手柄：Xitact IHP与触觉反馈和Xitact ITP没有触觉反馈（Mentice AB，哥德堡，瑞典），连接到LapSim（外科科学AB，瑞典）VR模拟器。他们在模拟器上执行了两项任务，然后回答了关于两个手柄的12个问题。外科医生没有被告知的差异handle.ResultsA共85%的20名外科医生谁参加了调查声称，这是很重要的是，处理与触觉反馈感觉逼真。90%的外科医生更喜欢没有触觉反馈的手柄。具有触觉反馈的手柄中的摩擦被认为与现实中一样（5%）或太高（95%）。关于没有触觉反馈的手柄，摩擦力被认为是现实中的（45%），太低（50%）或太高（5%）。共有85%的外科医生认为，带触觉反馈的手柄试图模拟组织对变形的阻力。百分之十的人认为手柄成功做到这一点。ConclusionsThe调查外科医生认为，触觉反馈是VR模拟器的一个重要功能，但是，他们更喜欢没有触觉反馈的手柄，因为他们认为手柄与触觉反馈增加额外的摩擦，使他们不切实际，而不是机械透明。
BackgroundTo improve patient safety, training of psychomotor laparoscopic skills is often done on virtual reality (VR) simulators outside the operating room. Haptic sensations have been found to influence psychomotor performance in laparoscopy. The emulation of haptic feedback is thus an important aspect of VR simulation. Some VR simulators try to simulate these sensations with handles equipped with haptic feedback. We conducted a survey on how laparoscopic surgeons perceive handles with and without haptic feedback.MethodsSurgeons with different levels of experience in laparoscopy were asked to test two handles: Xitact IHP with haptic feedback and Xitact ITP without haptic feedback (Mentice AB, Gothenburg, Sweden), connected to the LapSim (Surgical Science AB, Sweden) VR simulator. They performed two tasks on the simulator before answering 12 questions regarding the two handles. The surgeons were not informed about the differences in the handles.ResultsA total of 85 % of the 20 surgeons who participated in the survey claimed that it is important that handles with haptic feedback feel realistic. Ninety percent of the surgeons preferred the handles without haptic feedback. The friction in the handles with haptic feedback was perceived to be as in reality (5 %) or too high (95 %). Regarding the handles without haptic feedback, the friction was perceived as in reality (45 %), too low (50 %), or too high (5 %). A total of 85 % of the surgeons thought that the handle with haptic feedback attempts to simulate the resistance offered by tissue to deformation. Ten percent thought that the handle succeeds in doing so.ConclusionsThe surveyed surgeons believe that haptic feedback is an important feature on VR simulators; however, they preferred the handles without haptic feedback because they perceived the handles with haptic feedback to add additional friction, making them unrealistic and not mechanically transparent.