Water-Induced Finger Wrinkles Do Not Affect Touch Acuity or Dexterity in Handling Wet Objects

Human non-hairy (glabrous) skin of the fingers, palms and soles wrinkles after prolonged exposure to water. Wrinkling is a sympathetic nervous system-dependent process but little is known about the physiology and potential functions of water-induced skin wrinkling. Here we investigated the idea that wrinkling might improve handling of wet objects by measuring the performance of a large cohort of human subjects (n = 40) in a manual dexterity task. We also tested the idea that skin wrinkling has an impact on tactile acuity or vibrotactile sensation using two independent sensory tasks. We found that skin wrinkling did not improve dexterity in handling wet objects nor did it affect any aspect of touch sensitivity measured. Thus water-induced wrinkling appears to have no significant impact on tactile driven performance or dexterity in handling wet or dry objects.

[1]  Poulton Ec,et al.  Unwanted asymmetrical transfer effects with balanced experimental designs. , 1966 .

[2]  Kara L. Marshall,et al.  The cell biology of touch , 2010, The Journal of cell biology.

[3]  Romann Weber,et al.  Are Wet-Induced Wrinkled Fingers Primate Rain Treads? , 2011, Brain, Behavior and Evolution.

[4]  Tom V. Smulders,et al.  Water-induced finger wrinkles improve handling of wet objects , 2013, Biology Letters.

[5]  T. Nagasaka,et al.  Contribution of arteriovenous anastomoses to vasoconstriction induced by local heating of the human finger. , 1987, The Japanese journal of physiology.

[6]  S. O'riain.  New and Simple Test of Nerve Function in Hand , 1973, British medical journal.

[7]  E. Erdfelder,et al.  Statistical power analyses using G*Power 3.1: Tests for correlation and regression analyses , 2009, Behavior research methods.

[8]  C Bull,et al.  Finger wrinkling as a test of autonomic function. , 1977, British medical journal.

[9]  S. Kirkham,et al.  Fingertip Skin Wrinkling – the Effect of Varying Tonicity , 2005, Journal of hand surgery.

[10]  C. Birchmeier,et al.  The Transcription Factor c-Maf Controls Touch Receptor Development and Function , 2012, Science.

[11]  Thomas J. Jentsch,et al.  KCNQ4 K+ channels tune mechanoreceptors for normal touch sensation in mouse and man , 2011, Nature Neuroscience.

[12]  L Cales,et al.  Effect of water temperature on skin wrinkling. , 1997, The Journal of hand surgery.

[13]  E. Wilder-Smith.  Water immersion wrinkling--physiology and use as an indicator of sympathetic function. , 2004, Clinical autonomic research : official journal of the Clinical Autonomic Research Society.

[14]  Kenneth O. Johnson,et al.  The roles and functions of cutaneous mechanoreceptors , 2001, Current Opinion in Neurobiology.

[15]  Seng-Feng Jeng,et al.  Paradoxical response to water immersion in replanted fingers , 2006, Clinical Autonomic Research.

[16]  H. Daanen,et al.  Finger cold-induced vasodilation: a review , 2003, European Journal of Applied Physiology.

[17]  H. Levitt.  Transformed up-down methods in psychoacoustics. , 1971, The Journal of the Acoustical Society of America.

[18]  B. Povlsen,et al.  Case of the month: The skin wrinkle test: a simple nerve injury test for paediatric and uncooperative patients , 2006, Emergency Medicine Journal.

[19]  J J Zwislocki,et al.  On a psychophysical transformed-rule up and down method converging on a 75% level of correct responses , 2001, Proceedings of the National Academy of Sciences of the United States of America.

[20]  D J Williams.  Finger wrinkling after immersion in water , 1980, British medical journal.

[21]  Gary R Lewin,et al.  Hairy sensation. , 2013, Physiology.

[22]  E C Poulton,et al.  Unwanted asymmetrical transfer effects with balanced experimental designs. , 1966, Psychological bulletin.

[23]  Kuo-Feng Huang,et al.  EMLA and water immersion cause similar vasodilatation in replanted fingers. , 2007, The Journal of surgical research.

[24]  M. Cabanac,et al.  Heat-induced vasoconstriction in the fingers: a mechanism for reducing heat gain through the hand heated locally , 1986, Pflügers Archiv.

[25]  P. E. Phelps,et al.  Comparison of the finger wrinkling test results to established sensory tests in peripheral nerve injury. , 1977, The American journal of occupational therapy : official publication of the American Occupational Therapy Association.

[26]  E. Wilder-Smith,et al.  Water‐immersion wrinkling is due to vasoconstriction , 2003, Muscle & nerve.

[27]  M. Sadeh,et al.  Skin wrinkling on immersion of hands: a test of sympathetic function. , 1979, Archives of neurology.

[28]  B. A. Enoch,et al.  Hypoglycaemia in insulin-dependent diabetic drivers. , 1980, British medical journal.

[29]  Jens Jordan,et al.  A Genetic Basis for Mechanosensory Traits in Humans , 2012, PLoS biology.

[30]  A. V. Van rij,et al.  Skin wrinkling for the assessment of sympathetic function in the limbs. , 2000, The Australian and New Zealand journal of surgery.

[31]  E. Wilder-Smith,et al.  Water immersion and EMLA cause similar digit skin wrinkling and vasoconstriction. , 2003, Microvascular research.