The Community for Technology Leaders
RSS Icon
Issue No.03 - July-Sept. (2013 vol.6)
pp: 285-295
V. Panday , Fac. of Human Movement Sci., VU Univ. Amsterdam, Amsterdam, Netherlands
W. M. B. Tiest , Fac. of Human Movement Sci., VU Univ. Amsterdam, Amsterdam, Netherlands
A. M. L. Kappers , Fac. of Human Movement Sci., VU Univ. Amsterdam, Amsterdam, Netherlands
For small stimuli, it has been shown that subjects are very accurate in distinguishing a cylinder with an elliptical cross section from one with a circular cross section. In such a task, both curvature and length are integrated effectively. Large cylinders are explored differently: either by one hand or by two hands sliding over the surface. However, the same cues are available. We investigated the integration of position and curvature in unimanual and bimanual explorations. In Experiment 1, curved surfaces were presented as part of a horizontal cylinder with a cross section that was either a horizontally or a vertically elongated ellipse. We found that discrimination thresholds for unimanual exploration were significantly larger than for bimanual exploration. In Experiment 2, we found that position discrimination thresholds were independent of the type of exploration (unimanual or bimanual) and surprisingly also independent of the reference length. In Experiment 3, we found that discrimination thresholds for the position of the midsagittal plane were on an average lower than the position discrimination thresholds found in Experiment 2. From these findings, we conclude that the lower thresholds in Experiment 1 for bimanual exploration compared to unimanual exploration are due to the integration of curvature, not position or uncertainty of the midsagittal plane in unimanual exploration.
Computational modeling, Shape, Rails, Haptic interfaces, Analysis of variance, Educational institutions, Accuracy,curvature, Psychophysics, haptic perception, touch, bimanual integration
V. Panday, W. M. B. Tiest, A. M. L. Kappers, "Bimanual Integration of Position and Curvature in Haptic Perception", IEEE Transactions on Haptics, vol.6, no. 3, pp. 285-295, July-Sept. 2013, doi:10.1109/TOH.2013.8
[1] M.O. Ernst and H.H. Bülthoff, "Merging the Senses into a Robust Percept," Trends in Cognitive Sciences, vol. 8, no. 4, pp. 162-169, 2004.
[2] P.G. Lovell, M. Bloj, and J.M. Harris, "Optimal Integration of Shading and Binocular Disparity for Depth Perception," J. Vision, vol. 12, no. 1, pp. 1-18, 2012.
[3] W.M. Bergmann Tiest, L.M.A. Van der Hoff, and A.M.L. Kappers, "Cutaneous and Kinaesthetic Perception of Traversed Distance," Proc. IEEE World Haptics Conf., pp. 593-597, 2011.
[4] W.R. Garner, "Facilitation and Interference with a Separable Redundant Dimension in Stimulus Comparison," Perception and Psychophysics, vol. 44, no. 4, pp. 321-330, 1988.
[5] B.J. Van der Horst and A.M.L. Kappers, "Using Curvature Information in Haptic Shape Perception of 3D Objects," Experimental Brain Research, vol. 190, no. 3, pp. 361-367, 2008.
[6] A.M.L. Kappers, "Haptic Adjustment of Cylinder Radius," Proc. Int'l Conf. Haptics: Generating and Perceiving Tangible Sensations, pp. 426-431, 2010.
[7] V. Panday, W.M. Bergmann Tiest, and A.M.L. Kappers, "Influence of Local Properties on the Perception of Global Object Orientation," IEEE Trans. Haptics, vol. 5, no. 1, pp. 58-65, Jan.-Mar. 2012.
[8] S. Coren, The Left-Hander Syndrome. Vintage Books, 1993.
[9] A.F.J. Sanders and A.M.L. Kappers, "Bimanual Curvature Discrimination of Hand-Sized Surfaces Placed at Different Positions," Perception and Psychophysics, vol. 68, no. 7, pp. 1094-1106, 2006.
[10] M.W.A. Wijntjes and A.M.L. Kappers, "Haptic Curvature Contrast in Raised Lines and Solid Shapes," Experimental Brain Research, vol. 199, no. 2, pp. 127-133, 2009.
[11] G.A. Gescheider, Psychophysics the Fundamentals. Lawrence Erlbaum, 1997.
[12] V. Squeri, A. Sciutti, M. Gori, L. Masia, G. Sandini, and J. Konczak, "Two Hands, One Perception: How Bimanual Haptic Information Is Combined by the Brain," J. Neurophysiology, vol. 107, pp. 544-550, 2011.
[13] S.C. Pont, A.M.L. Kappers, and J.J. Koenderink, "Haptic Curvature Discrimination at Several Regions of the Hand," Perception and Psychophysics, vol. 59, no. 8, pp. 1225-1240, 1997.
[14] J. Jastrow, "The Perception of Space by Disparate Senses," Mind, vol. 11, no. 44, pp. 539-554, 1886.
[15] H.S. Langfeld, "The Differential Spatial Limen for Finger Span," J. Experimental Psychology, vol. 2, no. 6, pp. 416-430, 1917.
[16] S.S. Stevens and G. Stone, "Finger Span: Ratio Scale, Category Scale, and JND Scale," J. Experimental Psychology, vol. 57, no. 2, pp. 91-95, 1959.
[17] A.G. Dietze, "Kinaesthetic Discrimination: The Difference Limen for Finger Span," J. Psychology, vol. 51, no. 1, pp. 165-168, 1961.
[18] N.I. Durlach, L.A. Delhorne, A. Wong, W.Y. Ko, W.M. Rabinowitz, and J. Hollerbach, "Manual Discrimination and Identification of Length by the Finger-Span Method," Perception and Psychophysics, vol. 46, no. 1, pp. 29-38, 1989.
[19] H.F. Gaydos, "Sensitivity in the Judgment of Size by Finger-Span," Am. J. Psychology, vol. 71, no. 3, pp. 557-562, 1958.
[20] M. Hollins and A.K. Goble, "The Length of Voluntary Movements," Somatosensory Research, vol. 5, no. 4, pp. 335-348, 1988.
[21] G. Baud-Bovy, V. Squeri, and V. Sanguineti, "Size-Change Detection Thresholds of a Hand-Held Bar at Rest and during Movement," Proc. Int'l Conf. Haptics: Generating and Perceiving Tangible Sensations, pp. 327-332, 2010.
[22] R.J. Van Beers, A.C. Sittig, and J.J. Denier van der Gon, "The Precision of Proprioceptive Position Sense." Experimental Brain Research, vol. 122, no. 4, pp. 367-377, 1998.
515 ms
(Ver 2.0)

Marketing Automation Platform Marketing Automation Tool