Cue Summation Enables Perceptual Grouping.
In order to study how basic features interact in shape perception, subjects detected target figure presence and identified target figure shape in a combined 2-alternative forced-choice task. Target figures were embedded in Gabor random fields and were defined by feature contrast in spatial frequency...
| Publicado en: | Journal of Experimental Psychology. Human Perception & Performance Vol. 34; no. 1; pp. 1 - 27 |
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| Autores principales: | , |
| Formato: | Artículo |
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American Psychological Association
February 2008
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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=511390190&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 511390190 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: February 2008 vid: 34 iid: 1 pid: 34 pub: American Psychological Association artinfo: ui: 511390190 10.1037/0096-1523.34.1.1 ppf: 1 ppct: 26 formats: tig: atl: Cue Summation Enables Perceptual Grouping. aug: au: Persike, Malte Meinhardt, Günter su: Gestalt psychology Prompts (Psychology) Form perception Human information processing sug: subj: Gestalt psychology Prompts (Psychology) Form perception Human information processing ab: In order to study how basic features interact in shape perception, subjects detected target figure presence and identified target figure shape in a combined 2-alternative forced-choice task. Target figures were embedded in Gabor random fields and were defined by feature contrast in spatial frequency, orientation, or both. Two figure classes were used: block figures, which could not be identified at low feature-contrast levels, and lozenge figures, which could be identified to a moderate degree. Results showed a substantial double-cue benefit for both figure classes in detection. In identification, however, a double-cue benefit was practically absent for blocks, whereas, for lozenges, cue summation proved to be much stronger than in detection. The finding that the way basic features interact is modulated by figure class and psychophysical task indicates involvement of 2 distinct perceptual mechanisms in shape perception. The 1st one highlights salient features and enables local grouping on an early feature-specific processing level. The 2nd one is higher level, serves form completion and grouping of salient contours into global shapes, and enables figure perception. Reprinted by permission of the publisher. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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