Ongoing slow oscillatory phase modulates speech intelligibility in cooperation with motor cortical activity.
Neural oscillation is attracting attention as an underlying mechanism for speech recognition. Speech intelligibility is enhanced by the synchronization of speech rhythms and slow neural oscillation, which is typically observed as human scalp electroencephalography (EEG). In addition to the effect of...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Public Library of Science (PLoS)
2017-01-01
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| Series: | PLoS ONE |
| Online Access: | http://europepmc.org/articles/PMC5554004?pdf=render |
| _version_ | 1828750019709108224 |
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| author | Takayuki Onojima Keiichi Kitajo Hiroaki Mizuhara |
| author_facet | Takayuki Onojima Keiichi Kitajo Hiroaki Mizuhara |
| author_sort | Takayuki Onojima |
| collection | DOAJ |
| description | Neural oscillation is attracting attention as an underlying mechanism for speech recognition. Speech intelligibility is enhanced by the synchronization of speech rhythms and slow neural oscillation, which is typically observed as human scalp electroencephalography (EEG). In addition to the effect of neural oscillation, it has been proposed that speech recognition is enhanced by the identification of a speaker's motor signals, which are used for speech production. To verify the relationship between the effect of neural oscillation and motor cortical activity, we measured scalp EEG, and simultaneous EEG and functional magnetic resonance imaging (fMRI) during a speech recognition task in which participants were required to recognize spoken words embedded in noise sound. We proposed an index to quantitatively evaluate the EEG phase effect on behavioral performance. The results showed that the delta and theta EEG phase before speech inputs modulated the participant's response time when conducting speech recognition tasks. The simultaneous EEG-fMRI experiment showed that slow EEG activity was correlated with motor cortical activity. These results suggested that the effect of the slow oscillatory phase was associated with the activity of the motor cortex during speech recognition. |
| first_indexed | 2024-12-10T20:31:55Z |
| format | Article |
| id | doaj.art-ba4566a210564d8e89febd3a0f5141a1 |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-10T20:31:55Z |
| publishDate | 2017-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-ba4566a210564d8e89febd3a0f5141a12022-12-22T01:34:39ZengPublic Library of Science (PLoS)PLoS ONE1932-62032017-01-01128e018314610.1371/journal.pone.0183146Ongoing slow oscillatory phase modulates speech intelligibility in cooperation with motor cortical activity.Takayuki OnojimaKeiichi KitajoHiroaki MizuharaNeural oscillation is attracting attention as an underlying mechanism for speech recognition. Speech intelligibility is enhanced by the synchronization of speech rhythms and slow neural oscillation, which is typically observed as human scalp electroencephalography (EEG). In addition to the effect of neural oscillation, it has been proposed that speech recognition is enhanced by the identification of a speaker's motor signals, which are used for speech production. To verify the relationship between the effect of neural oscillation and motor cortical activity, we measured scalp EEG, and simultaneous EEG and functional magnetic resonance imaging (fMRI) during a speech recognition task in which participants were required to recognize spoken words embedded in noise sound. We proposed an index to quantitatively evaluate the EEG phase effect on behavioral performance. The results showed that the delta and theta EEG phase before speech inputs modulated the participant's response time when conducting speech recognition tasks. The simultaneous EEG-fMRI experiment showed that slow EEG activity was correlated with motor cortical activity. These results suggested that the effect of the slow oscillatory phase was associated with the activity of the motor cortex during speech recognition.http://europepmc.org/articles/PMC5554004?pdf=render |
| spellingShingle | Takayuki Onojima Keiichi Kitajo Hiroaki Mizuhara Ongoing slow oscillatory phase modulates speech intelligibility in cooperation with motor cortical activity. PLoS ONE |
| title | Ongoing slow oscillatory phase modulates speech intelligibility in cooperation with motor cortical activity. |
| title_full | Ongoing slow oscillatory phase modulates speech intelligibility in cooperation with motor cortical activity. |
| title_fullStr | Ongoing slow oscillatory phase modulates speech intelligibility in cooperation with motor cortical activity. |
| title_full_unstemmed | Ongoing slow oscillatory phase modulates speech intelligibility in cooperation with motor cortical activity. |
| title_short | Ongoing slow oscillatory phase modulates speech intelligibility in cooperation with motor cortical activity. |
| title_sort | ongoing slow oscillatory phase modulates speech intelligibility in cooperation with motor cortical activity |
| url | http://europepmc.org/articles/PMC5554004?pdf=render |
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