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| Titel: |
Can phonological and semantic short-term memory be dissociated? Further evidence from landau-kleffner syndrome |
| Auteur: |
Majerus, S. Van der Linden, M. Poncelet, M. Metz-Lutz, M. -N. |
| Verschenen in: |
Cognitive neuropsychology |
| Paginering: | Jaargang 21 (2004) nr. 5 pagina's 491-512 |
| Jaar: |
2004-07 |
| Inhoud: |
Recent studies have made a distinction between short-term storage capacities for phonological information and short-term storage capacities for lexico-semantic information (R. Martin, Lesch, & Bartha, 1999). In this multiple case study, we tried to provide further evidence for the dissociability of phonological and lexico-semantic short-term memory (STM) components, by studying verbal STM in three patients who had recovered from Landau-Kleffner syndrome. Furthermore, we explored to what extent apparent dissociations between phonological and lexico-semantic STM could be related to underlying phonological and lexico-semantic processing impairments. We found clear dissociations between phonological and lexico-semantic STM measures in patients TG, JPH, and DC, whose performance was impaired in nonword immediate serial recall and in a rhyme probe task, while performance was normal for a category probe task. These patients also presented reduced phonological effects (word length, phonological similarity, phonotactic frequency) but normal lexico-semantic effects (lexicality, word imageability, word frequency) in STM. Moreover, there were no systematic correspondencies between phonological and lexico-semantic STM and phonological and lexico-semantic processing impairments. Implications for current models of STM and language processing are discussed. |
| Uitgever: |
Psychology Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 2 van 7 gevonden artikelen
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