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Neural dynamics of inflectional and derivational morphology processing in the human brain

Leminen, Alina ; Leminen, Miika ; Kujala, Teija and Shtyrov, Yury LU (2013) In Cortex 49(10). p.2758-2771
Abstract
We investigated neural distinctions between inflectional and derivational morphology and their interaction with lexical frequency using the mismatch negativity (MMN), an established neurophysiological index of experience-dependent linguistic memory traces and automatic syntactic processing. We presented our electroencephalography (EEG) study participants with derived and inflected words of variable lexical frequencies against their monomorphemic base forms in a passive oddball paradigm, along with acoustically matched pseudowords. Sensor space and distributed source modelling results showed that at 100-150 msec after the suffix onset, derived words elicited larger responses than inflected words. Furthermore, real derived words showed... (More)
We investigated neural distinctions between inflectional and derivational morphology and their interaction with lexical frequency using the mismatch negativity (MMN), an established neurophysiological index of experience-dependent linguistic memory traces and automatic syntactic processing. We presented our electroencephalography (EEG) study participants with derived and inflected words of variable lexical frequencies against their monomorphemic base forms in a passive oddball paradigm, along with acoustically matched pseudowords. Sensor space and distributed source modelling results showed that at 100-150 msec after the suffix onset, derived words elicited larger responses than inflected words. Furthermore, real derived words showed advantage over pseudo-derivations and frequent derivations elicited larger activation than less frequent ones. This pattern of results is fully in line with previous research that explained lexical MMN enhancement by an activation of strongly connected word-specific long-term memory circuits, and thus suggests stronger lexicalisation for frequently used complex words. At the same time, a strikingly different pattern was found for inflectional forms: higher response amplitude for pseudo-inflections than for real inflected words, with no clear frequency effects. This is fully in line with previous MMN results on combinatorial processing of (morpho)syntactic stimuli: higher response to ungrammatical morpheme strings than grammatical ones, which does not depend on the string's surface frequency. This pattern suggests that, for inflectional forms, combinatorial processing route dominates over whole-form storage and access. In sum, our results suggest that derivations are more likely to form unitary representations than inflections which are likely to be processed combinatorially, and imply at least partially distinct brain mechanisms for the processing and representation of these two types of morphology. These dynamic mechanisms, underpinned by perisylvian networks, are activated rapidly, at 100-150 msec after the information arrives at the input, and in a largely automatic fashion, possibly providing neural basis for the first-pass morphological processing of spoken words. (C) 2013 Elsevier Ltd. All rights reserved. (Less)
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Event-related potentials (ERPs), Mismatch negativity (MMN), Morphology, Inflection, Derivation, Lexical frequency
in
Cortex
volume
49
issue
10
pages
2758 - 2771
publisher
Elsevier
external identifiers
  • wos:000329142500016
  • scopus:84889659069
ISSN
1973-8102
DOI
10.1016/j.cortex.2013.08.007
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Linguistics and Phonetics (015010003)
id
f5db02e0-c6bc-435f-97f3-f0420bc2c1fe (old id 4261639)
date added to LUP
2016-04-01 10:01:51
date last changed
2025-04-04 15:19:35
@article{f5db02e0-c6bc-435f-97f3-f0420bc2c1fe,
  abstract     = {{We investigated neural distinctions between inflectional and derivational morphology and their interaction with lexical frequency using the mismatch negativity (MMN), an established neurophysiological index of experience-dependent linguistic memory traces and automatic syntactic processing. We presented our electroencephalography (EEG) study participants with derived and inflected words of variable lexical frequencies against their monomorphemic base forms in a passive oddball paradigm, along with acoustically matched pseudowords. Sensor space and distributed source modelling results showed that at 100-150 msec after the suffix onset, derived words elicited larger responses than inflected words. Furthermore, real derived words showed advantage over pseudo-derivations and frequent derivations elicited larger activation than less frequent ones. This pattern of results is fully in line with previous research that explained lexical MMN enhancement by an activation of strongly connected word-specific long-term memory circuits, and thus suggests stronger lexicalisation for frequently used complex words. At the same time, a strikingly different pattern was found for inflectional forms: higher response amplitude for pseudo-inflections than for real inflected words, with no clear frequency effects. This is fully in line with previous MMN results on combinatorial processing of (morpho)syntactic stimuli: higher response to ungrammatical morpheme strings than grammatical ones, which does not depend on the string's surface frequency. This pattern suggests that, for inflectional forms, combinatorial processing route dominates over whole-form storage and access. In sum, our results suggest that derivations are more likely to form unitary representations than inflections which are likely to be processed combinatorially, and imply at least partially distinct brain mechanisms for the processing and representation of these two types of morphology. These dynamic mechanisms, underpinned by perisylvian networks, are activated rapidly, at 100-150 msec after the information arrives at the input, and in a largely automatic fashion, possibly providing neural basis for the first-pass morphological processing of spoken words. (C) 2013 Elsevier Ltd. All rights reserved.}},
  author       = {{Leminen, Alina and Leminen, Miika and Kujala, Teija and Shtyrov, Yury}},
  issn         = {{1973-8102}},
  keywords     = {{Event-related potentials (ERPs); Mismatch negativity (MMN); Morphology; Inflection; Derivation; Lexical frequency}},
  language     = {{eng}},
  number       = {{10}},
  pages        = {{2758--2771}},
  publisher    = {{Elsevier}},
  series       = {{Cortex}},
  title        = {{Neural dynamics of inflectional and derivational morphology processing in the human brain}},
  url          = {{http://dx.doi.org/10.1016/j.cortex.2013.08.007}},
  doi          = {{10.1016/j.cortex.2013.08.007}},
  volume       = {{49}},
  year         = {{2013}},
}