Do Humans Sense Finger Deformation or Distributed Pressure to Detect Lumps in Soft Tissue?
Do Humans Sense Finger Deformation or Distributed Pressure to Detect Lumps in Soft Tissue?
复制标题
人类是否可以通过感知手指变形或分布压力来检测软组织中的肿块？
DOI：
10.1115/imece1998-0265
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
W. J. Peine
中科院分区：
文献类型：
--
作者：
W. J. Peine
检测和定位软组织中的硬块是一项重要的医疗程序。心理物理学实验测量了检测嵌入软橡胶模型中的硬球所需的最小压痕力。球的大小和手指压入速度是不同的。阈值检测力随着球尺寸的增加而增加，并随着压痕速度的增加而减少。在阈值力下测量手指的形状和手指上的接触压力分布。通过比较在相同压入力下有和没有球的手指压入模型的形状，确定由球引起的手指的相对变形。对于不同的球尺寸，最大相对变形几乎恒定，并且随着压痕速度的降低而显着增加。测量的压力分布显示出不同球尺寸和压痕速度的显着变化。这表明受试者感觉到了由球引起的指垫变形，而不是压力分布的变化。
Detecting and localizing hard lumps in soft tissues is an important medical procedure. A psychophysics experiment measured minimum indentation forces required to detect a hard ball embedded in a soft rubber model. Ball size and finger indentation speed were varied. Threshold detection forces increased with ball size and decreased with indentation speed. The shape of the finger and contact pressure distribution on the finger were measured at the threshold force. The relative deformation of the finger induced by the ball was determined by comparing the shape of the finger indenting models with and without a ball at the same indentation force. The maximum relative deformation was nearly constant for the different ball sizes and increased significantly as indentation speed decreased. The measured pressure distributions show a considerable change across different ball sizes and indentation speeds. This suggests subjects sensed deformation of the fingerpad induced by the ball and not changes in the pressure distribution.
影响因子：
2.5
作者：
SRINIVASAN, MA;LAMOTTE, RH
通讯作者：
LAMOTTE, RH