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  Cross-modal transfer in visual and haptic object categorization

Gaissert, N., Waterkamp, S., van Dam, L., & Bülthoff, I. (2011). Cross-modal transfer in visual and haptic object categorization. Poster presented at 34th European Conference on Visual Perception, Toulouse, France.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-BA6E-F Version Permalink: http://hdl.handle.net/21.11116/0000-0002-45F8-9
Genre: Poster

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 Creators:
Gaissert, N1, 2, Author              
Waterkamp, S1, 2, Author              
van Dam, L2, 3, Author              
Bülthoff, I1, 2, Author              
Affiliations:
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              
3Research Group Multisensory Perception and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497806              

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 Abstract: When humans have to categorize objects they often rely on shape as a deterministic feature. However, shape is not exclusive to the visual modality: the haptic system is also an expert in identifying shapes. This raises the question whether humans store separate modality-dependent shape representations or if one multimodal representation is formed. To better understand how humans categorize objects based on shape we created a set of computer-generated amoeba-like objects varing in defined shape steps. These objects were then printed using a 3D printer to generate tangible stimuli. In a discrimination task and a categorization task, participants either visually or haptically explored the objects. We found that both modalities lead to highly similar categorization behavior indicating that the processes underlying categorization are highly similar in both modalities. Next, participants were trained on special shape categories by using the visual modality alone or by using the haptic modality alone. As expected, visual training increased visual performance and haptic training increased haptic performance. Moreover, we found that visual training on shape categories greatly improved haptic performance and vice versa. Our results point to a shared representation underlying both modalities, which accounts for the surprisingly strong transfer of training across the senses.

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 Dates: 2011-09
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: BibTex Citekey: GaissertWvB2011
DOI: 10.1177/03010066110400S102
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Title: 34th European Conference on Visual Perception
Place of Event: Toulouse, France
Start-/End Date: 2011-08-28 - 2011-09-01

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Title: Perception
Source Genre: Journal
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Publ. Info: London : Pion Ltd.
Pages: - Volume / Issue: 40 (ECVP Abstract Supplement) Sequence Number: - Start / End Page: 134 Identifier: ISSN: 0301-0066
CoNE: https://pure.mpg.de/cone/journals/resource/954925509369