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. 2023 Feb 8;20(199):20220718. doi: 10.1098/rsif.2022.0718

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© 2023 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 5. — Effect of the amplitude changes on the contact and the deformation of the skin. (a) Contact area before and after a rise in friction. (b) The contact area changes negatively correlate with the amplitude variations. (c) Contact area before and after a rapid reduction of friction. The error bars represent the standard deviation across repetitions and subjects. (d) Deformation field after the amplitude change for rising friction. (e) The average deformation is close to zero when vibration increases and is positively correlated with vibration amplitude when the vibration changes are increasing. The error bars represent the standard deviation across repetitions and subjects. (f) Deformation field after the amplitude change for falling friction.