title: The Role of Shape in Semantic Memory Organization of Objects: An Experimental Study Using PI-Release.
abstract: Visual information contributes fundamentally to the process of object categorization. The present study investigated whether the degree of activation of visual information in this process is dependent on the contextual relevance of this information. We used the Proactive Interference (PI-release) paradigm. In four experiments, we manipulated the information by which objects could be categorized and subsequently be retrieved from memory. The pattern of PI-release showed that if objects could be stored and retrieved both by (non-perceptual) semantic and (perceptual) shape information, then shape information was overruled by semantic information. If, however, semantic information could not be (satisfactorily) used to store and retrieve objects, then objects were stored in memory in terms of their shape. The latter effect was found to be strongest for objects from identical semantic categories.
authors: 1 Tilburg Center for Cognition and Communication (TiCC), The Netherlands.
authors: Lisanne
authors: L
authors: van Weelden
authors: Joost
authors: J
authors: Schilperoord
authors: Marc
authors: M
authors: Swerts
authors: Diane
authors: D
authors: Pecher
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D005260:Female; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D008297:Male; D008568:Memory / Q000502:physiology*; D008875:Middle Aged; D009275:Names; D009483:Neuropsychological Tests; D010775:Photic Stimulation; D060865:Repetition Priming / Q000502:physiology; D012660:Semantics; D055815:Young Adult
keywords: categorization; memory; object shape; proactive interference