English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Using visual and haptic information for discriminating objects

Ernst, M., & Banks, M. (2002). Using visual and haptic information for discriminating objects. Perception, 31(ECVP Abstract Supplement), 147.

Item is

Files

show Files

Locators

show
hide
Description:
-
OA-Status:

Creators

show
hide
 Creators:
Ernst, MO1, 2, Author           
Banks, MS, Author           
Affiliations:
1Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497797              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              

Content

show
hide
Free keywords: -
 Abstract: When feeling objects, vision and touch simultaneously provide information about size or shape. The purpose is to determine which representation we use for discriminating between objects which differ only in their visual and/or haptic size. We consider three representations: visual-alone, haptic-alone and combined visual-haptic. Integrating the information optimally, the combined visual-haptic percept is a weighted average of the two sizes. To measure discrimination performance subjects indicated the odd of three sequentially presented stimuli. These were horizontal bars, two of which were identical and had equal visual and haptic heights (standard). The third (odd) stimulus had a different visual and/or haptic height. If subjects used the visual-alone or haptic-alone representations, discrimination would occur whenever the visual or haptic height in the odd stimulus differed from the standard by more than the threshold. If subjects relied on the combined representation, no discrimination should occur when visual and haptic heights differ in opposite directions so that their weighted averages are equal and discrimination should be best when both these heights are either bigger or smaller then the standard. We found that discrimination was indeed most difficult when the weighted averages were equal. Thus, the combined visual-haptic percept is used for discrimination. However, if the conflict between visual and haptic heights became too large, discrimination improved, indicating that we also can access the visual-alone and haptic-alone representations.

Details

show
hide
Language(s):
 Dates: 2002-08
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: BibTex Citekey: 1933
DOI: 10.1177/03010066020310S101
 Degree: -

Event

show
hide
Title: 25th European Conference on Visual Perception (ECVP 2002)
Place of Event: Glasgow, UK
Start-/End Date: 2002-08-25 - 2002-08-29

Legal Case

show

Project information

show

Source 1

show
hide
Title: Perception
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: London : Pion Ltd.
Pages: - Volume / Issue: 31 (ECVP Abstract Supplement) Sequence Number: - Start / End Page: 147 Identifier: ISSN: 0301-0066
CoNE: https://pure.mpg.de/cone/journals/resource/954925509369