Effect of Fingertip Temperature on Multi-finger Actions in Young Adults

손 끝 온도변화가 젊은 성인의 다중 손가락 동작에 미치는 효과

  • Shin, Narae (Department of Physical Education, Seoul National University) ;
  • Xu, Dayuan (Department of Physical Education, Seoul National University) ;
  • Song, Jun Kyung (Department of Physical Education, Seoul National University) ;
  • Park, Jaebum (Department of Physical Education, Seoul National University)
  • Received : 2019.05.22
  • Accepted : 2019.07.11
  • Published : 2019.09.30


Objective: This study examined the effects of stimulating fingertip temperature on the patterns of force sharing and stability properties during multi-finger force production tasks. Method: 9 adult subjects (male: 3, female: 6, age: $26.11{\pm}4.01yrs$, height: $169.22{\pm}5.97cm$, weight: $61.44{\pm}11.27kg$) participated in this study. The experiment consisted of three blocks: 1) maximal voluntary contraction (MVC) task, 2) single-finger ramp task to quantify enslaving (i.e., unintended force production by non-task fingers), and 3) 12 trials of multi-finger steady-state force production task at 20% MVC. There were three temperature conditions including body-temperature (i.e., control condition), $40^{\circ}C$, and $43^{\circ}C$, and the stimulation was given to the index finger only for all experimental conditions. Results: There were no significant differences in the MVC forces, enslaving, and the accuracy of performance during the steady-state task between the conditions. However, the share of stimulated index finger force increased with the index fingertip temperature, while the share of middle finger force decreased. Also, the coefficient of variation of both index and middle finger forces over repetitive trials increased with the index fingertip temperature. Under the framework of the uncontrolled manifold (UCM) hypothesis used to quantify indices of multi-finger synergies (i.e., stability property) stabilizing total force during the steady-state task, the two variance components within the UCM analysis increased together with the fingertip temperature, while no changes in the synergy indices between the conditions. Conclusion: The current results showed that fingertip temperature stimulation only to index finger does not affect to muscle force production capability of multi-finger, independence of individual fingers, and force production accuracy by the involvement of all four fingers. The effect of fingertip temperature on the sharing pattern and force variation may be due to diffuse reflex effects of the induced afferent activity on alpha-motoneuronal pools. However, the unchanged stability properties may be the reflection of the active error compensation strategies by non-stimulated finger actions.



Supported by : National Research Foundation of Korea (NRF)


  1. Arpinar-Avsar, P., Park, J., Zatsiorsky, V. M. & Latash, M. L. (2013). Effects of muscle vibration on multi-finger interaction and coordination. Experimental Brain Research, 229(1), 103-111.
  2. Augurelle, A. S., Smith, A. M., Lejeune, T. & Thonnard, J. L. (2003). importance of cutaneous feedback in maintaining a secure grip during manipulation of hand-held objects. Journal of Neurophysiology, 89(2), 665-671.
  3. Blouin, J. S., Corbeil, P. & Teasdale, N. (2003). Postural stability is altered by the stimulation of pain but not warm receptors in humans. BMC Musculoskeletal Disorders, 4(1), 23.
  4. Cole, J. D. & Sedgwick, E. M. (1992). The perceptions of force and of movement in a man without large myelinated sensory afferents below the neck. The Journal of Physiology, 449(1), 503-515.
  5. Cote, J. N., Feldman, A. G., Mathieu, P. A. & Levin, M. F. (2008). Effects of fatigue on intermuscular coordination during repetitive hammering. Motor Control, 12(2), 79-92.
  6. Cote, J. N., Mathieu, P. A., Levin, M. F. & Feldman, A. G. (2002). Movement reorganization to compensate for fatigue during sawing. Experimental Brain Research, 146(3), 394-398.
  7. de Freitas, P. B., Freitas, S. M., Lewis, M. M., Huang, X. & Latash, M. L. (2018). Stability of steady hand force production explored across spaces and methods of analysis. Experimental Brain Research, 1-18.
  8. Hensel, H., iggo, A. & Witt, i. (1960). A quantitative study of sensitive cutaneous thermoreceptors with C afferent fibres. The Journal of Physiology, 153(1), 113-126.
  9. Iggo, A. (1969). Cutaneous thermoreceptors in primates and sub-primates. The Journal of Physiology, 200(2), 403-430.
  10. Jenmalm, P. & Johansson, R. S. (1997). Visual and somatosensory information about object shape control manipulative fingertip forces. Journal of Neuroscience, 17(11), 4486-4499.
  11. Johansson, R. S. & Westling, G. (1987). Signals in tactile afferents from the fingers eliciting adaptive motor responses during precision grip. Experimental Brain Research, 66(1), 141-154.
  12. Karol, S., Koh, K., Kwon, H. J., Park, Y. S., Kwon, Y. H. & Shim, J. K. (2016). ORiGiNAL: The Effect of Frequency of Transcutaneous Electrical Nerve Stimulation (TENS) on Maximum Multi-finger Force Production. Korean Journal of Sport Biomechanics, 26(1), 93-99.
  13. Kim, K., Xu, D. & Park, J. (2017). Effect of Kinetic Degrees of Freedom of the Fingers on the Task Performance during Force Production and Release: Archery Shooting-like Action. Korean Journal of Sport Biomechanics, 27(2), 117-124.
  14. Krishnamoorthy, V., Latash, M. L., Scholz, J. P. & Zatsiorsky, V. M. (2003). Muscle synergies during shifts of the center of pressure by standing persons. Experimental Brain Research, 152(3), 281-292.
  15. Latash, M. L. (2008). Synergy. Oxford University Press.
  16. Latash, M. L., Friedman, J., Kim, S. W., Feldman, A. G. & Zatsiorsky, V. M. (2010). Prehension synergies and control with referent hand configurations. Experimental Brain Research, 202(1), 213-229.
  17. Latash, M. L., Scholz, J. F., Danion, F. & Schoner, G. (2001). Structure of motor variability in marginally redundant multifinger force production tasks. Experimental Brain Research, 141(2), 153-165.
  18. Latash, M. L., Scholz, J. P. & Schoner, G. (2007). Toward a new theory of motor synergies. Motor Control, 11(3), 276-308.
  19. Lee, J., Song, J., Ahn, J. & Park, J. (2017). The Effect of Short-term Muscle Vibration on Knee Joint Torque and Muscle Firing Patterns during a Maximal Voluntary isometric Contraction. Korean Journal of Sport Biomechanics, 27(2), 83-90.
  20. Li, Z. M., Latash, M. L. & Zatsiorsky, V. M. (1998). Force sharing among fingers as a model of the redundancy problem. Experimental Brain Research, 119(3), 276-286.
  21. Martin, J. R., Latash, M. L. & Zatsiorsky, V. M. (2009). Interaction of finger enslaving and error compensation in multiple finger force production. Experimental Brain Research, 192(2), 293-298.
  22. Mattos, D., Schoner, G., Zatsiorsky, V. M. & Latash, M. L. (2015). Motor equivalence during multi-finger accurate force production. Experimental Brain Research, 233(2), 487-502.
  23. McGlone, F. & Reilly, D. (2010). The cutaneous sensory system. Neuroscience & Biobehavioral Reviews, 34(2), 148-159.
  24. Park, J. & Xu, D. (2017). Multi-finger interaction and synergies in finger flexion and extension force production. Frontiers in Human Neuroscience, 11, 318.
  25. Scholz, J. P. & Schoner, G. (1999). The uncontrolled manifold concept: identifying control variables for a functional task. Experimental Brain Research, 126(3), 289-306.
  26. Shim, J. K., Karol, S., Kim, Y. S., Seo, N. J., Kim, Y. H., Kim, Y. & Yoon, B. C. (2012). Tactile feedback plays a critical role in maximum finger force production. Journal of Biomechanics, 45(3), 415-420.
  27. Singh, T., SKM, V., Zatsiorsky, V. M. & Latash, M. L. (2010). Fatigue and motor redundancy: adaptive increase in finger force variance in multi-finger tasks. Journal of Nneurophysiology, 103(6), 2990-3000.
  28. Zatsiorsky, V. M., Li, Z. M. & Latash, M. L. (1998). Coordinated force production in multi-finger tasks: finger interaction and neural network modeling. Biological Cybernetics, 79(2), 139-150.