Chapter 4


Credits: References, Videos

Learning Objectives
  • Learn the main scientific methods for studying haptic perception
  • Discover perceptual illusions involving the sense of touch
  • Understand the usage of GFF devices in perception studies
Readings and Resources
  • Ernst, M. O., & Banks, M. S. (2002). Humans integrate visual and haptic information in a statistically optimal fashion. Nature, 415(6870), 429-433.
  • Jones, L. A., & Tan, H. Z. (2012). Application of psychophysical techniques to haptic research. IEEE transactions on haptics, 6(3), 268-284.
  • Levitt, H. C. C. H. (1971). Transformed up‐down methods in psychoacoustics. The Journal of the Acoustical society of America, 49(2B), 467-477.
  • Provancher, W. R., & Sylvester, N. D. (2009). Fingerpad skin stretch increases the perception of virtual friction. IEEE Transactions on Haptics, 2(4), 212-223.
  • Robles-De-La-Torre, G., & Hayward, V. (2001). Force can overcome object geometry in the perception of shape through active touch. Nature, 412(6845), 445-448.
Video Corrections

No correction has been reported by the community.

1. What is the goal of psychophysics experiments?

2. What is the definition of just noticeable difference (JND)? How is it computed?

3. Design a haptic experiment that measures the JND for stiffness (or texture roughness) with GFF devices.

  • What psychophysics method would you use? Why?
  • What biases and confounding factors could be present?
  • Find potential devices for running your experiment on Haptipedia. Justify your choice.
  • What limitations could prevent you from finding the true JND value for stiffness (or texture roughness)?
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