What is pressure detection different threshold in fingertip?

23 January 2025 1 4K Report

Hi, I'm Student in Master's degree and doing lot of Haptic perception Research.

I have a question about the perception of pressure that a human fingertip can feel. According to my research, when a vertical deformation of 0.91mm occurs at a human fingertip, the person perceives the corresponding tactile sensation. However, I would like to know the point of vertical depth where the Differential threshold increases and the perception decreases. What reference materials would be good?

Grigori Evreinov

just a few refs that might help...

Coe, P.; Evreinov, G.; Ziat, M.; Raisamo, R. (2024) What the Mind Can Comprehend from a Single Touch. Multimodal Technol. Interact. 2024, 8, 45. https://doi.org/10.3390/mti8060045.

Coe, P.; Evreinov, G.; Ziat, M.; Raisamo, R. (2023) A Universal Volumetric Haptic Actuation Platform. Multimodal Technol. Interact. 2023, 7, 99. https://www.mdpi.com/2414-4088/7/10/99

Shao Y, Hayward V, Visell Y. Compression of dynamic tactile information in the human hand. Sci Adv. 2020 Apr 15;6(16):eaaz1158. doi: 10.1126/

Jarocka E, Pruszynski JA, Johansson RS. Human Touch Receptors Are Sensitive to Spatial Details on the Scale of Single Fingerprint Ridges. J Neurosci. 2021 Apr 21;41(16):3622-3634. doi: 10.1523/JNEUROSCI.1716-20.2021.

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