There is a growing interest in the characterization of the internal body model: a stored representation of the metric properties of the body. Tactile Distance Task (TDT) is an experimental procedure for assessing the body metric, based on the perception of distances between tactile stimuli. We aimed at ruling out potential cognitive confounds: the body part being touched, the response estimation method being used, and the replicability of the results. Crucially, we compared two scoring indices (Global shape index vs. Misestimation of the distance) that have been used in the literature assessing the unique contribution of each score. Our data revealed a distortion of body metric perception of the leg. In particular, we found a more substantial reduction in proximo-distal distances rather than in the medio-lateral axis. TDT turned out to be a reliable and replicable method producing consistent results applicable to different body parts. The global shape index was shown to be particularly resistant to contextual experimental factors, while the Misestimation resulted in being affected by the estimation modalities, revealing that the verbal response was the most precise method. Finally, we provided substantial support for the combined use of the two indices as they were shown to give complementary information about body metric representation distortions.

人们对内部人体模型的表征越来越感兴趣：人体度量属性的存储表示形式。触觉距离任务（TDT）是一种基于对触觉刺激之间距离的感知来评估人体指标的实验程序。我们旨在排除潜在的认知混淆：身体部位被触摸，使用的响应估计方法以及结果的可复制性。至关重要的是，我们比较了两个评分指标（整体形状指标与距离的误判），用于评估每个评分的独特贡献。我们的数据揭示了对腿部的身体度量感知的扭曲。特别是，我们发现近距距离比中外侧轴更显着减小。TDT被证明是一种可靠且可复制的方法，可产生适用于不同身体部位的一致结果。总体形状指数显示出对上下文实验因素的抵抗力特别强，而Misestimation则受估计方式的影响，表明言语反应是最精确的方法。最后，我们为两个索引的组合使用提供了实质性支持，因为它们显示出有关人体度量表示失真的补充信息。揭示言语反应是最精确的方法。最后，我们为两个索引的组合使用提供了实质性支持，因为它们显示了有关人体度量表示失真的补充信息。揭示言语反应是最精确的方法。最后，我们为两个索引的组合使用提供了实质性支持，因为它们显示了有关人体度量表示失真的补充信息。