The Influence of Motor Task on Tactile Suppression During Action

  • Nienke B. Debats
  • Marieke Rohde
  • Catharina Glowania
  • Anna Oppenborn
  • Marc O. Ernst
Conference paper

DOI: 10.1007/978-3-319-42321-0_15

Part of the Lecture Notes in Computer Science book series (LNCS, volume 9774)
Cite this paper as:
Debats N.B., Rohde M., Glowania C., Oppenborn A., Ernst M.O. (2016) The Influence of Motor Task on Tactile Suppression During Action. In: Bello F., Kajimoto H., Visell Y. (eds) Haptics: Perception, Devices, Control, and Applications. EuroHaptics 2016. Lecture Notes in Computer Science, vol 9774. Springer, Cham

Abstract

Movement of a limb substantially decreases the intensity and sensitivity with which tactile stimuli on that limb are perceived. This movement-related tactile suppression likely interferes with performance in motor tasks that require the precise evaluation of tactile feedback, such as the adjustment of grip forces during grasping. Therefore, we hypothesise that suppression might be stronger for stimuli that are irrelevant to successful performance in a given motor task. To test this hypothesis, we measured participants’ perception of tactile intensity while performing different motor tasks. We investigated perception of both supra-threshold stimuli (Exp. 1: intensity discrimination) and of stimuli close to the detection threshold (Exp. 2: detection). We compared tactile perception between two grasping conditions (active, tactile inputs relevant), a condition where participants pointed in the air (active, tactile inputs irrelevant) and a static condition (baseline). In both experiments, we observed tactile suppression in all three movement conditions but not the predicted attenuation of tactile suppression in the grasp conditions. Contrary to our hypothesis, there was even an amplification of tactile suppression in the grasping conditions of Exp. 1, which might be related to the movement velocity. In conclusion, we did not find evidence that motor tasks modulate the strength of tactile suppression. Our results further suggest that it is important to control for possibly confounding variables, such as movement velocity and laterality, in this line of research.

Keywords

Tactile suppression Active touch Motor behaviour 

Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Nienke B. Debats
    • 1
    • 2
  • Marieke Rohde
    • 2
    • 3
  • Catharina Glowania
    • 1
    • 2
  • Anna Oppenborn
    • 1
  • Marc O. Ernst
    • 2
    • 4
  1. 1.Department of Cognitive NeuroscienceUniversity of BielefeldBielefeldGermany
  2. 2.Center for Cognitive Interaction Technology (CITEC)University of BielefeldBielefeldGermany
  3. 3.AFFS Affective Signals GmbHBerlinGermany
  4. 4.Department of Applied Cognitive PsychologyUniversity of UlmUlmGermany

Personalised recommendations