Interaction between episodic and semantic memory networks in the acquisition and consolidation of novel spoken words
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Number of pages
SourceBrain and Language, 167, (2017), pp. 44-60
Article / Letter to editor
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PI Group Neurobiology of Language
PI Group Neuronal Oscillations
SW OZ BSI OLO
SW OZ DCC PL
Brain and Language
Subject130 000 Cognitive Neurology & Memory; DI-BCB_DCC_Theme 1: Language and Communication; Learning and Plasticity; Psycholinguistics
When a novel word is learned, its memory representation is thought to undergo a process of consolidation and integration. In this study, we tested whether the neural representations of novel words change as a function of consolidation by observing brain activation patterns just after learning and again after a delay of one week. Words learned with meanings were remembered better than those learned without meanings. Both episodic (hippocampus-dependent) and semantic (dependent on distributed neocortical areas) memory systems were utilised during recognition of the novel words. The extent to which the two systems were involved changed as a function of time and the amount of associated information, with more involvement of both systems for the meaningful words than for the form-only words after the one-week delay. These results suggest that the reason the meaningful words were remembered better is that their retrieval can benefit more from these two complementary memory systems.
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