Theta-band oscillations in the middle temporal gyrus reflect novel word consolidation

Iske Bakker-Marshall, Atsuko Takashima, Jan Mathijs Schoffelen, Janet G. Van Hell, Gabriele Janzen, James M. McQueen

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Like many other types of memory formation, novel word learning benefits from an offline consolidation period after the initial encoding phase. A previous EEG study has shown that retrieval of novel words elicited more word-like-induced electrophysiological brain activity in the theta band after consolidation [Bakker, I., Takashima, A., van Hell, J. G., Janzen, G., & McQueen, J. M. Changes in theta and beta oscillations as signatures of novel word consolidation. Journal of Cognitive Neuroscience, 27, 1286–1297, 2015]. This suggests that theta-band oscillations play a role in lexicalization, but it has not been demonstrated that this effect is directly caused by the formation of lexical representations. This study used magnetoencephalography to localize the theta consolidation effect to the left posterior middle temporal gyrus (pMTG), a region known to be involved in lexical storage. Both untrained novel words and words learned immediately before test elicited lower theta power during retrieval than existing words in this region. After a 24-hr consolidation period, the difference between novel and existing words decreased significantly, most strongly in the left pMTG. The magnitude of the decrease after consolidation correlated with an increase in behavioral competition effects between novel words and existing words with similar spelling, reflecting functional integration into the mental lexicon. These results thus provide new evidence that consolidation aids the development of lexical representations mediated by the left pMTG. Theta synchronization may enable lexical access by facilitating the simultaneous activation of distributed semantic, phonological, and orthographic representations that are bound together in the pMTG.

Original languageEnglish (US)
Pages (from-to)621-633
Number of pages13
JournalJournal of cognitive neuroscience
Volume30
Issue number5
DOIs
StatePublished - May 1 2018

Fingerprint

Temporal Lobe
Magnetoencephalography
Semantics
Electroencephalography
Learning
Brain

All Science Journal Classification (ASJC) codes

  • Cognitive Neuroscience

Cite this

Bakker-Marshall, Iske ; Takashima, Atsuko ; Schoffelen, Jan Mathijs ; Van Hell, Janet G. ; Janzen, Gabriele ; McQueen, James M. / Theta-band oscillations in the middle temporal gyrus reflect novel word consolidation. In: Journal of cognitive neuroscience. 2018 ; Vol. 30, No. 5. pp. 621-633.
@article{0297dba940dc44b09d497ea53866ef94,
title = "Theta-band oscillations in the middle temporal gyrus reflect novel word consolidation",
abstract = "Like many other types of memory formation, novel word learning benefits from an offline consolidation period after the initial encoding phase. A previous EEG study has shown that retrieval of novel words elicited more word-like-induced electrophysiological brain activity in the theta band after consolidation [Bakker, I., Takashima, A., van Hell, J. G., Janzen, G., & McQueen, J. M. Changes in theta and beta oscillations as signatures of novel word consolidation. Journal of Cognitive Neuroscience, 27, 1286–1297, 2015]. This suggests that theta-band oscillations play a role in lexicalization, but it has not been demonstrated that this effect is directly caused by the formation of lexical representations. This study used magnetoencephalography to localize the theta consolidation effect to the left posterior middle temporal gyrus (pMTG), a region known to be involved in lexical storage. Both untrained novel words and words learned immediately before test elicited lower theta power during retrieval than existing words in this region. After a 24-hr consolidation period, the difference between novel and existing words decreased significantly, most strongly in the left pMTG. The magnitude of the decrease after consolidation correlated with an increase in behavioral competition effects between novel words and existing words with similar spelling, reflecting functional integration into the mental lexicon. These results thus provide new evidence that consolidation aids the development of lexical representations mediated by the left pMTG. Theta synchronization may enable lexical access by facilitating the simultaneous activation of distributed semantic, phonological, and orthographic representations that are bound together in the pMTG.",
author = "Iske Bakker-Marshall and Atsuko Takashima and Schoffelen, {Jan Mathijs} and {Van Hell}, {Janet G.} and Gabriele Janzen and McQueen, {James M.}",
year = "2018",
month = "5",
day = "1",
doi = "10.1162/jocn_a_01240",
language = "English (US)",
volume = "30",
pages = "621--633",
journal = "Journal of Cognitive Neuroscience",
issn = "0898-929X",
publisher = "MIT Press Journals",
number = "5",

}

Bakker-Marshall, I, Takashima, A, Schoffelen, JM, Van Hell, JG, Janzen, G & McQueen, JM 2018, 'Theta-band oscillations in the middle temporal gyrus reflect novel word consolidation', Journal of cognitive neuroscience, vol. 30, no. 5, pp. 621-633. https://doi.org/10.1162/jocn_a_01240

Theta-band oscillations in the middle temporal gyrus reflect novel word consolidation. / Bakker-Marshall, Iske; Takashima, Atsuko; Schoffelen, Jan Mathijs; Van Hell, Janet G.; Janzen, Gabriele; McQueen, James M.

In: Journal of cognitive neuroscience, Vol. 30, No. 5, 01.05.2018, p. 621-633.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Theta-band oscillations in the middle temporal gyrus reflect novel word consolidation

AU - Bakker-Marshall, Iske

AU - Takashima, Atsuko

AU - Schoffelen, Jan Mathijs

AU - Van Hell, Janet G.

AU - Janzen, Gabriele

AU - McQueen, James M.

PY - 2018/5/1

Y1 - 2018/5/1

N2 - Like many other types of memory formation, novel word learning benefits from an offline consolidation period after the initial encoding phase. A previous EEG study has shown that retrieval of novel words elicited more word-like-induced electrophysiological brain activity in the theta band after consolidation [Bakker, I., Takashima, A., van Hell, J. G., Janzen, G., & McQueen, J. M. Changes in theta and beta oscillations as signatures of novel word consolidation. Journal of Cognitive Neuroscience, 27, 1286–1297, 2015]. This suggests that theta-band oscillations play a role in lexicalization, but it has not been demonstrated that this effect is directly caused by the formation of lexical representations. This study used magnetoencephalography to localize the theta consolidation effect to the left posterior middle temporal gyrus (pMTG), a region known to be involved in lexical storage. Both untrained novel words and words learned immediately before test elicited lower theta power during retrieval than existing words in this region. After a 24-hr consolidation period, the difference between novel and existing words decreased significantly, most strongly in the left pMTG. The magnitude of the decrease after consolidation correlated with an increase in behavioral competition effects between novel words and existing words with similar spelling, reflecting functional integration into the mental lexicon. These results thus provide new evidence that consolidation aids the development of lexical representations mediated by the left pMTG. Theta synchronization may enable lexical access by facilitating the simultaneous activation of distributed semantic, phonological, and orthographic representations that are bound together in the pMTG.

AB - Like many other types of memory formation, novel word learning benefits from an offline consolidation period after the initial encoding phase. A previous EEG study has shown that retrieval of novel words elicited more word-like-induced electrophysiological brain activity in the theta band after consolidation [Bakker, I., Takashima, A., van Hell, J. G., Janzen, G., & McQueen, J. M. Changes in theta and beta oscillations as signatures of novel word consolidation. Journal of Cognitive Neuroscience, 27, 1286–1297, 2015]. This suggests that theta-band oscillations play a role in lexicalization, but it has not been demonstrated that this effect is directly caused by the formation of lexical representations. This study used magnetoencephalography to localize the theta consolidation effect to the left posterior middle temporal gyrus (pMTG), a region known to be involved in lexical storage. Both untrained novel words and words learned immediately before test elicited lower theta power during retrieval than existing words in this region. After a 24-hr consolidation period, the difference between novel and existing words decreased significantly, most strongly in the left pMTG. The magnitude of the decrease after consolidation correlated with an increase in behavioral competition effects between novel words and existing words with similar spelling, reflecting functional integration into the mental lexicon. These results thus provide new evidence that consolidation aids the development of lexical representations mediated by the left pMTG. Theta synchronization may enable lexical access by facilitating the simultaneous activation of distributed semantic, phonological, and orthographic representations that are bound together in the pMTG.

UR - http://www.scopus.com/inward/record.url?scp=85044664107&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85044664107&partnerID=8YFLogxK

U2 - 10.1162/jocn_a_01240

DO - 10.1162/jocn_a_01240

M3 - Article

C2 - 29393716

AN - SCOPUS:85044664107

VL - 30

SP - 621

EP - 633

JO - Journal of Cognitive Neuroscience

JF - Journal of Cognitive Neuroscience

SN - 0898-929X

IS - 5

ER -