Journal
COGNITIVE NEUROPSYCHOLOGY
Volume 24, Issue 2, Pages 131-151Publisher
PSYCHOLOGY PRESS
DOI: 10.1080/02643290600989376
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Funding
- Medical Research Council [MC_U105580447, MC_U105579219] Funding Source: Medline
- MRC [MC_U105579219, MC_U105580447] Funding Source: UKRI
- Medical Research Council [MC_U105580447, MC_U105579219] Funding Source: researchfish
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In this study, we explored capacities for three different aspects of short-term verbal memory in patients with semantic dementia. As expected, the two patients had poor recall for lexico-semantic item information, as assessed by immediate serial recall of word lists. In contrast, their short-term memory for phonological information was preserved, as evidenced by normal performance for immediate serial recall of nonword lists, with normal or increased nonword phonotactic-frequency effects, and increased sensitivity to phonological lures in a delayed probe recognition task. Furthermore, the patients appeared to have excellent memory for the serial order of the words in a list. These data provide further support for the proposal that language knowledge is a major determining factor of verbal STM capacity, but they also highlight the necessary distinction of processes involved in item and order recall, as proposed by recent models of STM.
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