The Haptic Analog of the Visual Aubert-Fleischl Phenomenon

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• 作者：Alessando Moscatelli (17)
  Meike Scheller (17)
  Gabriele Joanna Kowalski (17)
  Marc Ernst (17)
  
• 关键词：Velocity discrimination ; Touch ; Proprioception
• 刊名：Lecture Notes in Computer Science
• 出版年：2014
• 出版时间：2014
• 年：2014
• 卷：1
• 期：1
• 页码：34-40
• 全文大小：346 KB
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• 作者单位：Alessando Moscatelli (17)
  Meike Scheller (17)
  Gabriele Joanna Kowalski (17)
  Marc Ernst (17)
  
  17. Cognitive Neuroscience and CITEC, Universit盲t Bielefeld, Universit盲tsstrassse 25, 33615, Bielefeld, Germany
  
• ISSN：1611-3349

文摘

In vision, the perceived velocity of a moving stimulus is different depending on whether the image moves across the retina with the eyes immobile or whether the observer pursues the stimulus such that the stimulus is stationary on the moving retina. The effect is known as the Aubert-Fleischl phenomenon. Here, we reproduced the analog of this visual illusion in haptics. For this purpose, we asked our participants to estimate the speed of a moving belt either from tactile cues, by keeping the hand world stationary, or from proprioceptive cues by tracking the belt with a guided upper-limb movement. The participants overestimated the speed of the moving stimulus determined from tactile cues compared with proprioceptive cues, in analogy with the Aubert-Fleischl phenomenon. Reproducing the illusion in the haptic modality may help evaluating some of the general mechanisms of spatial constancy in perceptual systems.