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  The achievement of object constancy across depth rotation for unimodal and crossmodal visual and haptic object recognition

Lawson, R., & Bülthoff, H. (2008). The achievement of object constancy across depth rotation for unimodal and crossmodal visual and haptic object recognition. Poster presented at 31st European Conference on Visual Perception (ECVP 2008), Utrecht, The Netherlands.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-C7F7-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-903B-8
Genre: Poster

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 Creators:
Lawson, R, Author              
Bülthoff, HH1, 2, Author              
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, ou_1497797              

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 Abstract: We investigated whether achieving object constancy across depth rotation was similar for visual (V) versus haptic (H) inputs by testing unimodal (VV, HH) and crossmodal (VH, HV) sequential object matching. We presented 60 white, hand-sized, plastic object models comprising 20 pairs from similarly-shaped categories (bath/sink; pig/dog, key/sword) and a midway morph (eg, half-bath/half-sink) between each pair. These objects were placed at fixed orientations behind an LCD screen that was opaque for haptic inputs and clear for visual presentations. A 90° rotation from the first to the second object on a trial impaired people‘s ability to detect shape changes in all conditions except HV matching. Task difficulty was varied between groups by manipulating shape dissimilarity on mismatch trials. For VV matches only, task-irrelevant rotations disrupted performance more when the task was harder. Viewpoint thus influenced both visual and haptic object identification but the effects of depth rotations differed across modalities and for unimodal versus crossmodal matching. These results suggest that most view change effects are due to modality-specific processes.

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 Dates: 2008-08
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: 6041
DOI: 10.1177/03010066080370S101
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Title: 31st European Conference on Visual Perception (ECVP 2008)
Place of Event: Utrecht, The Netherlands
Start-/End Date: 2008-08-24 - 2008-08-28

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Title: Perception
Source Genre: Journal
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Publ. Info: London : Pion Ltd.
Pages: - Volume / Issue: 37 (ECVP Abstract Supplement) Sequence Number: - Start / End Page: 6 Identifier: ISSN: 0301-0066
CoNE: https://pure.mpg.de/cone/journals/resource/954925509369