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  An instance of tactile suppression: Active exploration impairs tactile sensitivity for the direction of lateral movement

Vitello, M., Ernst, M., & Fritschi, M. (2006). An instance of tactile suppression: Active exploration impairs tactile sensitivity for the direction of lateral movement. In A. Kheddar, & B. Bayart (Eds.), EuroHaptics International Conference (EH 2006) (pp. 351-355). Paris, France.

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Eurohaptics-2006-Vitello.pdf (Any fulltext), 622KB
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 Creators:
Vitello, MP1, 2, Author           
Ernst, MO1, 2, Author           
Fritschi, M1, 2, Author           
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1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: The phenomenon of a reduction in tactile sensitivity during voluntarily executed body movement we call “tactile suppression”. This is in analogy to saccadic suppression where the visual sensitivity is reduced during voluntarily executed eye movements [1]. Here we investigate tactile suppression using an integrated tactile/kinesthetic display – consisting of a tactile shear force device [2] mounted on a hyper redundant haptic display (ViSHaRD10 [3]). To quantify the tactile suppression effect we measured subject’s motion-direction discrimination performance for tactile stimuli moving laterally on the index finger under various active and passive exploration conditions. In the baseline condition (“static”) only tactile stimuli were provided using the shear-force device while the arm was held still. In the “active” condition subjects had to discriminate the direction of tactile motion while actively executing arm movements at the same time. Finally, in the “passive” condition the kinesthetic device passively moved the subjects’ arm, while the subject was performing the discrimination task. Compared to the “still” condition results indicate a significant decrease of tactile sensibility during active movements whereas passive movements seem to have a minor effect on tactile discrimination performance.

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 Dates: 2006-07
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: BibTex Citekey: 4073
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Title: EuroHaptics International Conference (EH 2006)
Place of Event: Paris, France
Start-/End Date: 2006-07-03 - 2006-07-06

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Title: EuroHaptics International Conference (EH 2006)
Source Genre: Proceedings
 Creator(s):
Kheddar, A, Editor
Bayart, B, Editor
Affiliations:
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Publ. Info: Paris, France
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 351 - 355 Identifier: -