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Modulation of working memory updating: Does long-term memory lexical association matter?
Caterina Artuso1, Paola Palladino2
1Brain Behavioral Science Department, University of Pavia, Piazza Botta 11, 27100, Pavia, Italy. caterina.artuso@unipv.it.
Cognitive Processing
|September 2, 2015
Summary
Working memory updating for verbal material is affected by long-term memory associations. Lexical associations, based on word co-occurrences, negatively impact working memory performance.
Area of Science:
- Cognitive Psychology
- Neuroscience
Background:
- Working memory performance is influenced by long-term memory representations.
- Two perspectives exist: lexical properties (language co-occurrences) vs. nonlexical properties (e.g., alphabetical order).
Purpose of the Study:
- To investigate how lexical and nonlexical long-term memory associations modulate working memory updating.
- To determine the differential impact of these association types on cognitive performance.
Main Methods:
- Participants were assigned to groups manipulating association strength between letters.
- Stimuli associations were based on either lexical frequency (co-occurrence) or nonlexical contiguity (alphabetical order).
Main Results:
- A significant cost in working memory updating was observed specifically for strongly lexically associated stimuli.
- No such cost was found for nonlexically associated stimuli.
Conclusions:
- Lexical long-term memory associations between consonants impact working memory updating.
- This finding contributes to understanding how memory systems interact and influence cognitive processes.
Keywords:
Lexical representationLong-term memoryShort-term memoryVerbal working memoryWorking memory updatingMore Related Videos
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