English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Effects of supervised and unsupervised categorization on visual and haptic object representations

Cooke, T., Wallraven, C., & Bülthoff, H. (2006). Effects of supervised and unsupervised categorization on visual and haptic object representations. Poster presented at 7th International Multisensory Research Forum (IMRF 2006), Dublin, Ireland.

Item is

Files

show Files
hide Files
:
IMRF-2006-Cooke.pdf (Any fulltext), 254KB
Name:
IMRF-2006-Cooke.pdf
Description:
-
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Creators

show
hide
 Creators:
Cooke, T1, 2, Author              
Wallraven, C1, 2, Author              
Bülthoff, H1, 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              

Content

show
hide
Free keywords: -
 Abstract: The way we perceive objects can be shaped by how we learn to categorize them, such as increasing the saliency of diagnostic dimensions, but most evidence of this comes from unimodal studies in vision. Does category learning have comparable effects when objects are perceived using touch? In this study, subjects learned to categorize a set of 25 novel, 3D objects which varied parametrically in shape and texture, using either vision or touch, and then provided similarity ratings on the objects. Multidimensional scaling (MDS) was used to construct a perceptual stimulus space and estimate the relative importance of shape and texture dimensions for each subject. The effects of categorization were quantified by comparing dimension weights when similarity ratings were performed 1) without prior categorization experience, 2) after an unsupervised categorization task, and 3) after a supervised task in which subjects learned groupings based on texture. In preliminary results (5 subjects per condition), significant diffe rences between unimodal dimension weights found in condition 1 (shape dominating for vision; shape and texture equally weighted for touch) were not observed in conditions 2 and 3. These findings suggest that externally as well as internally-guided categorization could serve as a mechanism for reducing initial differences in unimodal representations of novel objects.

Details

show
hide
Language(s):
 Dates: 2006-06
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: BibTex Citekey: 4048
 Degree: -

Event

show
hide
Title: 7th International Multisensory Research Forum (IMRF 2006)
Place of Event: Dublin, Ireland
Start-/End Date: 2006-06-18 - 2006-06-21

Legal Case

show

Project information

show

Source 1

show
hide
Title: 7th International Multisensory Research Forum (IMRF 2006)
Source Genre: Proceedings
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: - Sequence Number: 156 Start / End Page: - Identifier: -