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Forehearing words : Pre-activation of word endings at word onset

Roll, Mikael LU ; Söderström, Pelle LU ; Frid, Johan LU ; Mannfolk, Peter LU and Horne, Merle LU (2017) In Neuroscience Letters 658. p.57-61
Abstract (Swedish)
Occurring at rates up to 6-7 syllables per second, speech perception and understanding involves rapid identification of speech sounds and pre-activation of morphemes and words. Using event-related potentials (ERPs) and functional magnetic resonance imaging (fMRI), we investigated the time-course and neural sources of pre-activation of word endings as participants heard the beginning of unfolding words. ERPs showed a pre-activation negativity (PrAN) for word beginnings (first two segmental phonemes) with few possible completions. PrAN increased gradually as the number of possible completions of word onsets decreased and the lexical frequency of the completions increased. The early brain potential effect for few possible word completions was... (More)
Occurring at rates up to 6-7 syllables per second, speech perception and understanding involves rapid identification of speech sounds and pre-activation of morphemes and words. Using event-related potentials (ERPs) and functional magnetic resonance imaging (fMRI), we investigated the time-course and neural sources of pre-activation of word endings as participants heard the beginning of unfolding words. ERPs showed a pre-activation negativity (PrAN) for word beginnings (first two segmental phonemes) with few possible completions. PrAN increased gradually as the number of possible completions of word onsets decreased and the lexical frequency of the completions increased. The early brain potential effect for few possible word completions was associated with a blood-oxygen-level-dependent (BOLD) contrast increase in Broca’s area (pars opercularis of the left inferior frontal gyrus) and angular gyrus of the left parietal lobe. We suggest early involvement of the left prefrontal cortex in inhibiting irrelevant left parietal activation during lexical selection. The results further our understanding of the importance of Broca’s area in rapid online pre-activation of words. (Less)
Abstract
Occurring at rates up to 6-7 syllables per second, speech perception and understanding involves rapid identification of speech sounds and pre-activation of morphemes and words. Using event-related potentials (ERPs) and functional magnetic resonance imaging (fMRI), we investigated the time-course and neural sources of pre-activation of word endings as participants heard the beginning of unfolding words. ERPs showed a pre-activation negativity (PrAN) for word beginnings (first two segmental phonemes) with few possible completions. PrAN increased gradually as the number of possible completions of word onsets decreased and the lexical frequency of the completions increased. The early brain potential effect for few possible word completions was... (More)
Occurring at rates up to 6-7 syllables per second, speech perception and understanding involves rapid identification of speech sounds and pre-activation of morphemes and words. Using event-related potentials (ERPs) and functional magnetic resonance imaging (fMRI), we investigated the time-course and neural sources of pre-activation of word endings as participants heard the beginning of unfolding words. ERPs showed a pre-activation negativity (PrAN) for word beginnings (first two segmental phonemes) with few possible completions. PrAN increased gradually as the number of possible completions of word onsets decreased and the lexical frequency of the completions increased. The early brain potential effect for few possible word completions was associated with a blood-oxygen-level-dependent (BOLD) contrast increase in Broca’s area (pars opercularis of the left inferior frontal gyrus) and angular gyrus of the left parietal lobe. We suggest early involvement of the left prefrontal cortex in inhibiting irrelevant left parietal activation during lexical selection. The results further our understanding of the importance of Broca’s area in rapid online pre-activation of words. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
language, Broca's area, pre-activation, pre-activation negativity, PrAN, lexical selection, language, Broca’s area, pre-activation, pre-activation negativity (PrAN), lexical selection
in
Neuroscience Letters
volume
658
pages
57 - 61
publisher
Elsevier
external identifiers
  • scopus:85028080040
ISSN
0304-3940
DOI
10.1016/j.neulet.2017.08.030
language
English
LU publication?
yes
id
f9f22ccc-2680-4092-b00a-6e19552f8096
date added to LUP
2017-08-21 14:45:18
date last changed
2017-09-10 05:23:05
@article{f9f22ccc-2680-4092-b00a-6e19552f8096,
  abstract     = {Occurring at rates up to 6-7 syllables per second, speech perception and understanding involves rapid identification of speech sounds and pre-activation of morphemes and words. Using event-related potentials (ERPs) and functional magnetic resonance imaging (fMRI), we investigated the time-course and neural sources of pre-activation of word endings as participants heard the beginning of unfolding words. ERPs showed a pre-activation negativity (PrAN) for word beginnings (first two segmental phonemes) with few possible completions. PrAN increased gradually as the number of possible completions of word onsets decreased and the lexical frequency of the completions increased. The early brain potential effect for few possible word completions was associated with a blood-oxygen-level-dependent (BOLD) contrast increase in Broca’s area (pars opercularis of the left inferior frontal gyrus) and angular gyrus of the left parietal lobe. We suggest early involvement of the left prefrontal cortex in inhibiting irrelevant left parietal activation during lexical selection. The results further our understanding of the importance of Broca’s area in rapid online pre-activation of words.},
  author       = {Roll, Mikael and Söderström, Pelle and Frid, Johan and Mannfolk, Peter and Horne, Merle},
  issn         = {0304-3940},
  keyword      = {language,Broca's area,pre-activation,pre-activation negativity,PrAN,lexical selection,language,Broca’s area,pre-activation,pre-activation negativity (PrAN),lexical selection},
  language     = {eng},
  pages        = {57--61},
  publisher    = {Elsevier},
  series       = {Neuroscience Letters},
  title        = {Forehearing words : Pre-activation of word endings at word onset},
  url          = {http://dx.doi.org/10.1016/j.neulet.2017.08.030},
  volume       = {658},
  year         = {2017},
}