A Change in the Fingertip Contact Area Induces an Illusory Displacement of the Finger

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• 作者：Alessandro Moscatelli (19)
  Matteo Bianchi (17) (18)
  Alessandro Serio (17) (18)
  Omar Al Atassi (18)
  Simone Fani (18)
  Alexander Terekhov (20)
  Vincent Hayward (20)
  Marc Ernst (19)
  Antonio Bicchi (17) (18)
  
• 关键词：Area of contact ; Proprioception ; Finger displacement
• 刊名：Lecture Notes in Computer Science
• 出版年：2014
• 出版时间：2014
• 年：2014
• 卷：1
• 期：1
• 页码：72-79
• 全文大小：624 KB
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• 作者单位：Alessandro Moscatelli (19)
  Matteo Bianchi (17) (18)
  Alessandro Serio (17) (18)
  Omar Al Atassi (18)
  Simone Fani (18)
  Alexander Terekhov (20)
  Vincent Hayward (20)
  Marc Ernst (19)
  Antonio Bicchi (17) (18)
  
  19. Universit盲t Bielefeld, Cognitive Neuroscience and CITEC, Bielefeld, Germany
  17. Advanced Robotics Department, Istituto Italiano di Tecnologia, Genova, Italy
  18. Universit谩 di Pisa, Centro di Ricerca E. Piaggio, Pisa, Italy
  20. Sorbonne Universit茅s, UPMC Univ Paris 06, UMR 7222, ISIR, 75005, Paris, France
  
• ISSN：1611-3349

文摘

Imagine you are pushing your finger against a deformable, compliant object. The change in the area of contact can provide an estimate of the relative displacement of the finger, such that the larger is the area of contact, the larger is the displacement. Does the human haptic system use this as a cue for estimating the displacement of the finger with respect to the external object? Here we conducted a psychophysical experiment to test this hypothesis. Participants compared the passive displacement of the index finger between a reference and a comparison stimulus. The compliance of the contacted object changed between the two stimuli, thus producing a different area-displacement relationship. In accordance with the hypothesis, the modulation of the area-displacement relationship produced a bias in the perceived displacement of the finger.