IfADo - Leibniz Research Centre for Working Environment and Human Factors, Ardeystrasse 67, Dortmund, Germany.
Ergonomics. 2011 Jan;54(1):34-46. doi: 10.1080/00140139.2010.535023.
This study investigated the influence of the type of visual feedback during practice with a complex visuo-motor transformation of a sliding two-sided lever on the acquisition of an internal model of the transformation. Three groups of participants, who practised with different types of visual feedback, were compared with regard to movement accuracy, curvature and movement time. One group had continuous visual feedback during practice and two groups were presented terminal visual feedback, either only the end position of the movement or the end position together with the trajectory of the cursor. Results showed that continuous visual feedback led to more precise movement end positions during practice than terminal visual feedback, but to less precise movements during open-loop tests. This finding indicates that terminal visual feedback supports the development of a precise internal model of a new visuo-motor transformation. However, even terminal feedback of the cursor trajectory during practice did not result in an internal model, which includes appropriate curvatures of hand movements. STATEMENT OF RELEVANCE: This paper presents results on the influence of type of visual feedback on learning the complex motor skill of controlling a sliding lever. These findings contribute to the conceptual basis of optimised training procedures for the acquisition of sensori-motor skills required for the mastery of instruments utilised in minimally invasive surgery.
本研究调查了在练习复杂的滑动双边杠杆视动转换时，使用不同类型的视觉反馈对转换内部模型习得的影响。对练习中使用不同类型视觉反馈的三组参与者进行了运动准确性、曲率和运动时间的比较。一组在练习过程中持续有视觉反馈，而两组只在末端呈现视觉反馈，要么只显示运动的终点位置，要么显示运动终点位置和光标轨迹。结果表明，与末端视觉反馈相比，连续视觉反馈在练习过程中能使运动终点位置更精确，但在开环测试中运动的精确性较差。这一发现表明，末端视觉反馈有助于形成新视动转换的精确内部模型。然而，即使在练习过程中仅反馈光标轨迹，也不能形成包含适当手部运动曲率的内部模型。相关性声明：本文介绍了视觉反馈类型对学习滑动杠杆这一复杂运动技能的影响。这些发现为优化感觉运动技能训练程序提供了概念基础，这些技能是掌握微创手术中使用的仪器所必需的。
