| Dynamic prototypicality effects in visual search. | |
| | |
MedLine Citation:
|
PMID: 21668128 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
In recent studies, researchers have discovered a larger neural activation for stimuli that are more extreme exemplars of their stimulus class, compared with stimuli that are more prototypical. This has been shown for faces as well as for familiar and novel shape classes. We used a visual search task to look for a behavioral correlate of these findings regarding both simple geometrical shapes and more complex, novel shape classes. The latter stimulus set enabled us to control for the physical properties of the shapes, establishing that the effects are solely due to the positions of the particular stimuli in a particular shape space (i.e., more extreme versus more central in shape space) and not to specific shape features. The results indicate that finding an atypical instance of a shape class among more prototypical ones is easier and faster than the other way around. The prototypical status of a shape in our experiment could change very quickly, that is, within minutes, depending on the subset of shapes that was shown to the participants. Manipulating the degree of familiarity toward the shapes by selectively increasing familiarity for the extreme shapes did not influence our results. In general, we show that the prototypical status of a stimulus in visual search is a highly dynamic property, depending on the distribution of stimuli within a shape space but not on familiarity with the prototype. (PsycINFO Database Record (c) 2011 APA, all rights reserved). |
| | |
Authors:
|
Greet Kayaert; Hans P Op de Beeck; Johan Wagemans |
Related Documents
:
|
12436268 - The origins of physiological tremor as deduced from immersions of the finger in various... 427348 - A rotating transducer real-time scanner for ultrasonic examination of the heart and abd... 15485508 - Wavelet-based analysis of heart-rate-dependent ecg features. 16075298 - Circadian variation of cardiac autonomic nervous profile is affected in japanese ambula... 18502108 - Locomotion patterns in two south american gymnophthalmid lizards: vanzosaura rubricauda... 15695188 - Chromatic assimilation: spread light or neural mechanism? |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-6-13 |
Journal Detail:
|
Title: Journal of experimental psychology. General Volume: - ISSN: 1939-2222 ISO Abbreviation: - Publication Date: 2011 Jun |
Date Detail:
|
Created Date: 2011-6-14 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 7502587 Medline TA: J Exp Psychol Gen Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Pursuing goals with others: Group identification and motivation resulting from things done versus th...
Next Document: Rocking to the beat: Effects of music and partner's movements on spontaneous interpersonal coordinat...