Psychophysics Behavior of Human Tactile Mechanism to Discriminate Extremely Thin Copper Foils.

  • Authors

    • Mohammad Azzeim Bin Mat Jusoh
    • Masahiro Ohka
    • Tetsu Miyaoka
    • Sukarnur Bin Che Abdullah
    • Hafizan Bin Hashim
    2018-11-30
    https://doi.org/10.14419/ijet.v7i4.27.22496
  • Human tactile mechanism, Cutaneous function, Mechanoreceptor, Psychophysics, Weber fraction, Difference Threshold (DL).

  • In this study, our objective is to analyze human tactile mechanism behavior in recognizing extremely thin foils using the psychophysics method. Seven pairs of copper foils ranging in thickness from 20 ~ 150 μm were used in the experiment. We applied the method of constant stimuli to define the difference threshold between the materials. In order to increase the detection rate, contact between human tactile function and the metal foils was maintained. As a result, the Weber fraction c consistently reduces as thickness increases. However, the slope decrement is steep compared to previous experimentation (using stainless steel as base). We also validated the behavior of the undetected regions up to 150-μm thicknesses. This achievement was quite significant considering the higher thickness test ratio. In future, further comparison shall be made using different material type.

     

     

  • References

    1. [1] Miyaoka, T. and Ohka, M. 2001. Tactile Information Processing Mechanisms to Discriminate Foil Thickness. Proceedings of the Seventeenth Annual Meeting of the International Society for Psychophysics, Vol. 17.

      [2] Miyaoka, T. and Ohka, M. 2002. The Duplex Theory of Thickness Discriminations by Touch. JSME Annual Meeting 2002(1), 231-232.

      [3] Jones, L. A. and Lederman, S. J. 2006. Human Hand Function, Oxford University Press.

      [4] Bossomaier, T. R. 2012. Introduction to the Senses: From Biology to Computer Science, Cambridge University Press.

      [5] Mohammad Azzeim bin Mat Jusoh, M., Ohka, M., and Miyaoka, T. 2015. Finite Element Analysis of Human Tactile Sensing to Differentiate Thin Foils through Comparison Between Vertical & Angled Loads. Procedia Computer Science, Vol. 76: 40-46.

      [6] Johansson, R.S. and Vallbo, A.B., 1979. Tactile Sensibility in the human hand: Relative and Absolute densities of four types of Mechanoreceptive Units in Glabrous Skin. J. Physiol., Vol. 286, 283-300.

      [7] Johansson, R.S. and Flanagan, J.R., 2009. Coding and use of tactile signals from the fingertips in object manipulation tasks. Nature Reviews Neuroscience, 10(5), pp.345-359.

      [8] Kandel, E.R., Schwartz, J.H., & Jessell, T.M. (Eds), 2000. Principles of Neural Science (Fifth Edition, pp. 500). New York: McGraw-Hill.

      [9] Johanness, Z. 2010. Sensation, Perception and Action. An Evolutionary Perspective. Palgrave Macmillian.

      [10] Blausen.com staff. Blausen Gallery 2014. Wikiversity Journal of Medicine. DOI:10.15347/wjm/2014.010.ISSN 20018762

      [11] Gescheider G. A. 1997. Psychophysics: The Fundamentals, Third ed., Lawrence Erlbaum Associates.

      [12] Manning, S. A. and Rosenstock, E. H. 1968. Classical Psychophysics and Scaling, McGraw-Hill Book Company.

      [13] Stevens, S. S. 1975. Psychophysics: Introduction to Its Perceptual, Neural and Social Prospects, John Wiley & Sons, Inc.

      [14] John, K. T., Goodwin, A. W., and Darian-Smith, I. 1989. Tactile Discrimination of Thickness. Experimental Brain Research, Vol. 78, No. 1: 62-68.

      [15] Jusoh, Mohammad Azzeim Mat, Masahiro Ohka, and Tetsu Miyaoka. "Comparison of Tactile Discriminations to Verify the Undetectable Region of SUS Foil Thickness." Journal of Telecommunication, Electronic and Computer Engineering (JTEC) 8, no. 7 (2016): 83-86.

      [16] Sugiman, Kenji, Masahiro Ohka, and Mohammad Azzeim bin Mat Jusoh. "A Basic Paper Handling Task Experiment Using Tri-axial Tactile Data." Procedia Computer Science 105 (2017): 270-275.

      [17] Read, J.C.A. 2015. The place of Human Psychophysics in modern Neuroscience. Neuroscience, 296, pp. 116-129.

      [18] Fujita, K. and Ohmori, H. 2001. A New Softness Display Interface by Dynamic Fingertip Contact Area Control. In 5th World Multiconference on Systemics, Cybernetics and Informatics, pp. 78-82.

      [19] Burgess, P.R. and Perl, E.R., 1973. Cutaneous Mechanoreceptors and Nocireceptors. Somatosensory System, Springer.

      [20] Srinivasan, M.A. and LaMotte, R.H. 1987. Tactile Discrimination of Shape: Response of Slowly and Rapidly Adapting Mechanoreceptive Afferrents to a step indented into the monkey fingerpad. The Journal of Neuroscience, 7(6), 1682-1697.

      [21] Goodwin, A.W., Macefield, V.G., & Bisley, J.W. 1997. Encoding of Object Curviture by Tactile Afferrents from Human Fingers. Journal of Neurophysiology, 78(6), 2881-2888.

      [22] Bolanowski, S.J. Jr., Gescheider, G.A., Verrillo, R.T. and Checkosky, C.M. 1988. Four Channels Mediate the Mechanical Aspects of Touch. Journal of the Acoustical Society of America, 84, 1680-1694.

  • Downloads

  • How to Cite

    Azzeim Bin Mat Jusoh, M., Ohka, M., Miyaoka, T., Bin Che Abdullah, S., & Bin Hashim, H. (2018). Psychophysics Behavior of Human Tactile Mechanism to Discriminate Extremely Thin Copper Foils. International Journal of Engineering & Technology, 7(4.27), 110-114. https://doi.org/10.14419/ijet.v7i4.27.22496