Changes in theta and Beta oscillations as signatures of novel word consolidation

Journal of Cognitive Neuroscience
Iske BakkerJames M McQueen

Abstract

The complementary learning systems account of word learning states that novel words, like other types of memories, undergo an offline consolidation process during which they are gradually integrated into the neocortical memory network. A fundamental change in the neural representation of a novel word should therefore occur in the hours after learning. The present EEG study tested this hypothesis by investigating whether novel words learned before a 24-hr consolidation period elicited more word-like oscillatory responses than novel words learned immediately before testing. In line with previous studies indicating that theta synchronization reflects lexical access, unfamiliar novel words elicited lower power in the theta band (4-8 Hz) than existing words. Recently learned words still showed a marginally lower theta increase than existing words, but theta responses to novel words that had been acquired 24 hr earlier were indistinguishable from responses to existing words. Consistent with evidence that beta desynchronization (16-21 Hz) is related to lexical-semantic processing, we found that both unfamiliar and recently learned novel words elicited less beta desynchronization than existing words. In contrast, no difference was foun...Continue Reading

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Citations

Aug 4, 2015·Psychophysiology·Thomas SchreinerBjörn Rasch
Apr 3, 2016·Brain and Language·Thomas Schreiner, Björn Rasch
Jun 23, 2016·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·Hsueh-Sheng ChiangMichael A Kraut
Jul 28, 2016·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Alina LeminenYury Shtyrov
Feb 3, 2018·Journal of Cognitive Neuroscience·Iske Bakker-MarshallJames M McQueen
Jan 13, 2018·Journal of Cognitive Neuroscience·David A VogelsangJon S Simons
Sep 8, 2017·Journal of Cognitive Neuroscience·Gabriela MeadePhillip J Holcomb
Mar 17, 2018·Scientific Reports·Stefan ElmerAntoni Rodríguez-Fornells
Mar 24, 2017·International Journal of Developmental Neuroscience : the Official Journal of the International Society for Developmental Neuroscience·Simon RigoulotSarah Lippé
Apr 19, 2020·Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology·Long-Long ZhangXiao-Tao Guo
Mar 19, 2021·Frontiers in Human Neuroscience·Max GaragnaniFriedemann Pulvermüller
Nov 19, 2019·Brain Research·Raphaël Fargier, Marina Laganaro

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