Asimetría en la amplitud perceptual: implicaciones para la presentación en parafóvea

Resumen

La amplitud perceptual, definida como la zona alrededor del punto de fijación de la que se extrae información funcional para el procesamiento, es mayor a la derecha que a la izquierda de éste, al menos cuando se procesa material verbal. Esta asimetría en la amplitud perceptual ha sido puesta de manifiesto con diferentes paradigmas experimentales que revisamos en este trabajo. Revisamos igualmente las distintas hipótesis que se han propuesto para su explicación, para concluir con algunas implicaciones que este dato pudiera tener para otros estudios que utilizan presentación de material verbal en parafóvea.     

When distorted logos are recognized as original? The role of the DRM procedure in detection of immediate and delayed consumers’ errors

IntroductionTo deal effectively with the market, one must create a distinct logo from competing logos. However, it is not uncommon that similarities between logos of various companies are enough to mislead consumers. This paper shows how the DRM paradigm as well as prototype theories can be used to investigate correct and erroneous recognitions of distorted familiar and unfamiliar logos in short- and long-term memory.MethodThe modified hybrid DRM procedure was adopted to test brand images that were distorted but perceptually similar. Participants performed the experimental task in which short- and long-term memory for logos were tested.ResultsThe results demonstrated no difference in memory performance between familiar and unfamiliar logos after a short delay. However, a discrepancy between recognizing both types of logos arose in long term memroy toward more errors for familiar images.ConclusionsThe results confirm that the DRM procedure can be successfully used by marketers as a potential tool in either detecting unfair competition or launching new brands.     

陈霖的拓扑性质知觉理论

2005年第四期“Visual Cognition”期刊专题讨论了拓扑知觉理沧,包括陈霖的主题文章、对这篇文章的评论以及陈霖对这些评论的答复。本文从三个方面介绍了陈霖的拓扑性质知觉理沦：拓扑性质的早期知觉、知觉物体的定义以及拓扑性质知觉理论的意义。     

The formation of linked perceptual classes

Multiple-exemplar training with stimuli in four domains induced two new fill-based (A1' and A2') and satellite-image-based (B1' and B2') perceptual classes. Conditional discriminations were established between the endpoints of the A1' and B1' classes as well as the A2' and B2' classes. The emergence of linked perceptual classes was evaluated by the performances occasioned by nine cross-class probes that contained fill variants as samples and satellite variants as comparisons, along with nine other cross-class probes that consisted of satellite variants as samples and fill variants as comparisons. The 18 probes were first presented serially and then concurrently. Class-consistent responding indicated the emergence of linked perceptual classes. Of the linked perceptual classes, 70% emerged during the initial serial test. An additional 20% of the linked perceptual classes emerged during the subsequently presented concurrent test block. Thus, linked perceptual classes emerged on an immediate or delayed basis. Linked perceptual classes, then, share structural and fuctional similarities with equivalence classes, generalized equivalence classes, cross-modal classes, and complex maturally occurring categories, and may clarify processes such as intersensory perception.