Fingertips contain specific types of skin receptors
Multiple anatomical and physiological studies confirm that human and animal fingertips and glabrous skin contain specific types of specialized touch and skin receptors, such as mechanoreceptors and Merkel cell complexes.
The claim is specific, empirical, and well-supported by multiple provided studies demonstrating the presence and function of specific skin and touch receptors in the fingertips and glabrous skin.
Roger Holmes Watkins, Mariama Dione, Rochelle Ackerley, Helena Backlund Wasling, Johan Wessberg, Line S. Löken. Evidence for sparse C-tactile afferent innervation of glabrous human hand skin. 2021. https://doi.org/10.1152/jn.00587.2020
Paper 0 discusses mechanoreceptors in human glabrous hand skin, including C-tactile afferents.
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Schellekens W, Thio M, Badde S, Winawer J, Ramsey N, Petridou N. A touch of hierarchy: population receptive fields reveal fingertip integration in Brodmann areas in human primary somatosensory cortex.. 2021. https://doi.org/10.1007/s00429-021-02309-5
Paper 3 investigates somatotopy and mechanoreceptors in the fingertips using neuroimaging and vibrotactile stimulation.
Valerie Wai, Lauren Roberts, Jana Michaud, Leah R. Bent, Andrea L. Clark. The Anatomical Distribution of Mechanoreceptors in Mouse Hind Paw Skin and the Influence of Integrin α1β1 on Meissner-Like Corpuscle Density in the Footpads. 2021. https://doi.org/10.3389/fnana.2021.628711
Paper 5 demonstrates that specific mechanoreceptors like Meissner-like corpuscles and Merkel cells are located in the glabrous skin of digit tips and footpads.
Yamada A, Gautam M, Yamada AI, Ling J, Gupta S, Furue H, Luo W, Gu JG. Acid-Sensing Ion Channels Drive the Generation of Tactile Impulses in Merkel Cell-Neurite Complexes of the Glabrous Skin of Rodent Hindpaws.. 2024. https://doi.org/10.1523/jneurosci.0885-24.2024
Paper 10 examines Merkel cell-neurite complexes in the glabrous skin of rodent paws and their role in touch impulses.
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