The Influence of Motor Task on Tactile Suppression During Action

  • Nienke B. DebatsEmail author
  • Marieke Rohde
  • Catharina Glowania
  • Anna Oppenborn
  • Marc O. Ernst
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9774)


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.


Tactile suppression Active touch Motor behaviour 



NBD was supported by the German Research Foundation (DFG) grant HE 1187/19-1. MR, CG and MOE were supported by the Cluster of Excellence Cognitive Interaction Technology ‘CITEC’ (EXC 277), which is funded by the DFG. MOE was additionally supported by the FP7/2007-2013 project n8 601165 WEARHAP. We would like to thank Irene Senna for fruitful discussions and Miriam Henning for her work on pilot experiments.


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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Nienke B. Debats
    • 1
    • 2
    Email author
  • 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

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