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  Material Properties Determine How we Integrate Shape Signals in Active Touch

Drewing, K., Ernst, M., & Wiecki, T. (2005). Material Properties Determine How we Integrate Shape Signals in Active Touch. In 1st Joint Worldhaptic Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems (WorldHaptics 2005) (pp. 1-6).

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Drewing, K1, 2, Autor           
Ernst, MO1, 2, Autor           
Wiecki, T1, 2, Autor           
Affiliations:
1Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              
2Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497797              

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 Zusammenfassung: When sliding a finger across a bumpy surface, the finger follows the surface geometry (position signal). At the same time the finger is exposed to forces related to the slope of the surface (force signal) [1]. For haptic shape perception the brain uses both signals integrating them by weighted averaging [2]. This is consistent with the Maximum-Likelihood-Estimate (MLE) model on signal integration, previously only applied to passive perception.
The model further predicts that signal weight is proportional to signal reliability. Here, we tested this prediction for the integration of force and position signals to perceived curvature by manipulating material properties of the curve. Low as compared to high compliance decreased the reliability and so the weight of the sensorily transduced position signal. High as compared to low friction decreased the reliability and so the weight of the transduced force signal. These results demonstrat that the MLE model extends to situations involving active touch.

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 Datum: 2005-03
 Publikationsstatus: Erschienen
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 Identifikatoren: BibTex Citekey: 3784
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Titel: 1st Joint Worldhaptic Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems (WorldHaptics 2005)
Veranstaltungsort: Pisa, Italy
Start-/Enddatum: 2005-03-18 - 2005-03-20

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Titel: 1st Joint Worldhaptic Conference and Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems (WorldHaptics 2005)
Genre der Quelle: Konferenzband
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Seiten: - Band / Heft: - Artikelnummer: - Start- / Endseite: 1 - 6 Identifikator: -