Collinearity Impairs Local Element Visual Search.
In visual searches, stimuli following the law of good continuity attract attention to the global structure and receive attentional priority. Also, targets that have unique features are of high feature contrast and capture attention in visual search. We report on a salient global structure combined w...
| Publicado en: | Journal of Experimental Psychology. Human Perception & Performance Vol. 39; no. 1; pp. 156 - 168 |
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| Autores principales: | , |
| Formato: | Artículo |
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American Psychological Association
Feb2013
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=85225504&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 85225504 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 00961523 EPH jtl: Journal of Experimental Psychology. Human Perception & Performance issn: 00961523 maglogo: N pubinfo: dt: Feb2013 vid: 39 iid: 1 pid: 34 pub: American Psychological Association artinfo: ui: 85225504 10.1037/a0027325 ppf: 156 ppct: 12 formats: tig: atl: Collinearity Impairs Local Element Visual Search. aug: au: Li Jingling Chia-Huei Tseng affil: China Medical University University of Hong Kong National Taiwan University su: Psychology Attention Memory Spatial orientation Task analysis sug: subj: Psychology Attention Memory Spatial orientation Task analysis keyword: attentional capture collinear orientation salience visual search attentional capture collinear orientation salience visual search ab: In visual searches, stimuli following the law of good continuity attract attention to the global structure and receive attentional priority. Also, targets that have unique features are of high feature contrast and capture attention in visual search. We report on a salient global structure combined with a high orientation contrast to the background, which actually impairs the search for a local element. In a search display containing 21 x 27 short horizontal element bars, we rotated the orientation of a whole column by 90° so that it stood out as a salient vertical collinear column. Observers searched for a small tilt on one of the elemental bars, and the target only occasionally overlapped with the salient column (over-lapping targets) by chance. In other words, the collinear column was not informative about a target search and was task-irrelevant. Our results showed that the target tilt orientation was discerned more slowly and less accurately for overlapping targets than nonoverlapping targets. In five experiments, we demonstrated that collinear grouping on the salient distractor was the major cause of this impairment. Potential mechanisms of how a global structure interacts with perceptual salience are discussed. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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