English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Learning to fuse unrelated cues

Ernst, M., & Jäkel, F. (2003). Learning to fuse unrelated cues. Poster presented at Third Annual Meeting of the Vision Sciences Society (VSS 2003), Sarasota, FL, USA.

Item is

Files

show Files

Locators

show
hide
Description:
-

Creators

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

Content

show
hide
Free keywords: -
 Abstract: Humans integrate visual and haptic size information in a statistically optimal fashion (Ernst Banks, 2002). That is, the perceived size is a weighted average of the individual estimates with weights proportional to their inverse variances. More importantly, the fused percept has lower variance then each individual estimate. Fusion of visual and haptic size estimates is reasonable because in the natural environment these cues to an object's size are highly correlated. The purpose of this study is to investigate whether cue fusion is learned based on the correlation between cues. Therefore, we took naturally uncorrelated cues — the luminance of an object (visual cue) and its stiffness (haptic cue) — and trained 6 subjects for approximately one hour in an environment where these cues were correlated. To test whether training had an effect we compared subject's discrimination performance before and after training for two intermixed conditions: One condition in which the two cues were consistent with the correlation during training (congruent) and the other condition in which the two cues were anti-correlated relative to the training phase (incongruent). If training had an effect we would predict that the stimuli with congruent cues elicit an improvement in discrimination performance relative to the incongruent condition, because if the cues are fused after training the variance of the combined estimate should get lower. In agreement with our prediction we found a significant interaction between pre- and post-test for the two congruent and incongruent conditions (F[1,5]=20,3; p<0.01). This indicates that subjects indeed picked up the correlation in the training phase and fused the two cues. We conclude that fusion of cues can be learned on a relatively short timeframe based on the statistics of their co-occurrence.

Details

show
hide
Language(s):
 Dates: 2003-10
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1167/3.9.32
BibTex Citekey: ErnstJ2003_2
 Degree: -

Event

show
hide
Title: Third Annual Meeting of the Vision Sciences Society (VSS 2003)
Place of Event: Sarasota, FL, USA
Start-/End Date: 2003-05-09 - 2003-05-14

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of Vision
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Charlottesville, VA : Scholar One, Inc.
Pages: - Volume / Issue: 3 (9) Sequence Number: - Start / End Page: 32 Identifier: ISSN: 1534-7362
CoNE: https://pure.mpg.de/cone/journals/resource/111061245811050