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Multiple inputs to episodic memory: words tell another story. Episodic memory, semantic memory, semantic dementia, verbal recall, phonology
Authors:
GRAHAM, K.S., PATTERSON, K., Powis, J., DRAKE, J. & HODGES, J.R.
Reference:
Neuropsychology 16(3), 380-389
Year of publication:
2002
CBU number:
5079
Abstract:
Seven patients with semantic dementia were given a memory task in which they were asked to recall and recognize 10-word lists of object-name vocabulary which had been pre-selected as either still ëknowní ó correct picture naming and word-picture matching ó or now ëunknowní ó incorrect picture naming and word-picture matching ó to each individual patient. The patients showed a significant advantage for ëknowní words in immediate free recall after several learning trials, and also in delayed recall and recognition. The majority of errors of commission for ëknowní words were semantic, while phonological errors, especially blends of target words, were produced in the ëunknowní condition. These findings support claims (a) that episodic memory is supported by multiple inputs from semantic and perceptual systems, and (b) that success in verbal and non-verbal episodic memory tasks is differentially dependent upon semantic and perceptual information.
