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| Format: | Artículo científico |
| Language: | en |
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Universitat de València
2001
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| Online Access: | https://www.redalyc.org/articulo.oa?id=16922207 |
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Table of Contents:
- Stimuli & Task characteristics in the global and local processing Dolores López Rafaela Luna María J. Blanca Caridad Zalabarod Psicología local processing Global processing visual perception Stimuli and task characteristics in the global and localprocessing. The order of processing of global and local features is stillunresolved. Several researchers, using hirarchical concentric stimuli, haveshown that globlal precedence ocurrs when the eccentricity of global andlocal information is held constant. However, anothers studies have obtainedlocal precedence with similar stimuli. Two experiments are reported in thepresent paper which were conducted to clarify this controversy in theprevious research. In experiment I, a target detection task was used withconcentric stimuli and with a greater number of local elements than those inour previous experiments (Blanca, López, Luna, Zalabardo y Rando, 2000;2001). The participants were asked to identify a circle in divided and selectiveattention conditions. The results showed neither a global advantage nor localone. The interference was bidirectional in the selective attention conditionand bidirectional but asymmetrical in the divided attention condition, beingthe global interference greater. In experiment II subjects had to indicate thedirection of an opening of a semicircle, while the exposure duration wasvaried (ilimited or 150 msec). The results demonstrated that the global levelwas identified faster than the local one in both selective and divided attention conditions, which is independent of the exposure duration. The findingseems to indicate that the task is an important determinant of globaladvantage in RT. The results are discussed on the basis of cognitiveprocesses underlying to the two task included. 2001 artículo científico 0211-2159 https://www.redalyc.org/articulo.oa?id=16922207 en http://www.redalyc.org/revista.oa?id=169 Psicológica application/pdf Universitat de València Psicológica (España) Num.2 Vol.22