Frontal midline theta rhythm and gamma power changes during focused attention on mental calculation: an MEG beamformer analysis
Frontal midline theta rhythm (Fmθ) appears widely distributed over medial prefrontal areas in EEG recordings, indicating focused attention. Although mental calculation is often used as an attention-demanding task, little has been reported on calculation-related activation in Fmθ experiments. In this...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2014-06-01
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| Series: | Frontiers in Human Neuroscience |
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| Online Access: | http://journal.frontiersin.org/Journal/10.3389/fnhum.2014.00406/full |
| _version_ | 1818285041131716608 |
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| author | Ryouhei eIshii Leonides eCanuet Tsutomu eIshihara Yasunori eAoki Shunichiro eIkeda Masahiro eHata Themistchris eKatsimichas Atsuko eGunji Hidetoshi eTakahashi Takayuki eNakahachi Masao eIwase Masatoshi eTakeda |
| author_facet | Ryouhei eIshii Leonides eCanuet Tsutomu eIshihara Yasunori eAoki Shunichiro eIkeda Masahiro eHata Themistchris eKatsimichas Atsuko eGunji Hidetoshi eTakahashi Takayuki eNakahachi Masao eIwase Masatoshi eTakeda |
| author_sort | Ryouhei eIshii |
| collection | DOAJ |
| description | Frontal midline theta rhythm (Fmθ) appears widely distributed over medial prefrontal areas in EEG recordings, indicating focused attention. Although mental calculation is often used as an attention-demanding task, little has been reported on calculation-related activation in Fmθ experiments. In this study we used spatially filtered MEG and permutation analysis to precisely localize cortical generators of the magnetic counterpart of Fmθ, as well as other sources of oscillatory activity associated with mental calculation processing (i.e., arithmetic subtraction). Our results confirmed and extended earlier EEG/MEG studies indicating that Fmθ during mental calculation is generated in the dorsal anterior cingulate and adjacent medial prefrontal cortex. Mental subtraction was also associated with gamma event-related synchronization, as an index of activation, in right parietal regions subserving basic numerical processing and number-based spatial attention. Gamma event-related desynchronization appeared in the right lateral prefrontal cortex, likely representing a mechanism to interrupt neural activity that can interfere with the ongoing cognitive task. |
| first_indexed | 2024-12-13T01:02:23Z |
| format | Article |
| id | doaj.art-02c778024154464ab9788921f80367fb |
| institution | Directory Open Access Journal |
| issn | 1662-5161 |
| language | English |
| last_indexed | 2024-12-13T01:02:23Z |
| publishDate | 2014-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Human Neuroscience |
| spelling | doaj.art-02c778024154464ab9788921f80367fb2022-12-22T00:04:39ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612014-06-01810.3389/fnhum.2014.0040683578Frontal midline theta rhythm and gamma power changes during focused attention on mental calculation: an MEG beamformer analysisRyouhei eIshii0Leonides eCanuet1Tsutomu eIshihara2Yasunori eAoki3Shunichiro eIkeda4Masahiro eHata5Themistchris eKatsimichas6Atsuko eGunji7Hidetoshi eTakahashi8Takayuki eNakahachi9Masao eIwase10Masatoshi eTakeda11Osaka University Graduate School of MedicineCentre for Biomedical Technology, Complutense University of MadridOsaka University Graduate School of MedicineOsaka University Graduate School of MedicineOsaka University Graduate School of MedicineOsaka University Graduate School of MedicineOsaka University Graduate School of MedicineYokohama National UniversityNational Institute of Mental Health, National Center for Neurology and PsychiatryNational Institute of Mental Health, National Center for Neurology and PsychiatryOsaka University Graduate School of MedicineOsaka University Graduate School of MedicineFrontal midline theta rhythm (Fmθ) appears widely distributed over medial prefrontal areas in EEG recordings, indicating focused attention. Although mental calculation is often used as an attention-demanding task, little has been reported on calculation-related activation in Fmθ experiments. In this study we used spatially filtered MEG and permutation analysis to precisely localize cortical generators of the magnetic counterpart of Fmθ, as well as other sources of oscillatory activity associated with mental calculation processing (i.e., arithmetic subtraction). Our results confirmed and extended earlier EEG/MEG studies indicating that Fmθ during mental calculation is generated in the dorsal anterior cingulate and adjacent medial prefrontal cortex. Mental subtraction was also associated with gamma event-related synchronization, as an index of activation, in right parietal regions subserving basic numerical processing and number-based spatial attention. Gamma event-related desynchronization appeared in the right lateral prefrontal cortex, likely representing a mechanism to interrupt neural activity that can interfere with the ongoing cognitive task.http://journal.frontiersin.org/Journal/10.3389/fnhum.2014.00406/fullgamma bandbeamformerMagnetoencephalography (MEG)Event-related desynchronization (ERD)focused attentionSynthetic Aperture Magnetometry (SAM) |
| spellingShingle | Ryouhei eIshii Leonides eCanuet Tsutomu eIshihara Yasunori eAoki Shunichiro eIkeda Masahiro eHata Themistchris eKatsimichas Atsuko eGunji Hidetoshi eTakahashi Takayuki eNakahachi Masao eIwase Masatoshi eTakeda Frontal midline theta rhythm and gamma power changes during focused attention on mental calculation: an MEG beamformer analysis Frontiers in Human Neuroscience gamma band beamformer Magnetoencephalography (MEG) Event-related desynchronization (ERD) focused attention Synthetic Aperture Magnetometry (SAM) |
| title | Frontal midline theta rhythm and gamma power changes during focused attention on mental calculation: an MEG beamformer analysis |
| title_full | Frontal midline theta rhythm and gamma power changes during focused attention on mental calculation: an MEG beamformer analysis |
| title_fullStr | Frontal midline theta rhythm and gamma power changes during focused attention on mental calculation: an MEG beamformer analysis |
| title_full_unstemmed | Frontal midline theta rhythm and gamma power changes during focused attention on mental calculation: an MEG beamformer analysis |
| title_short | Frontal midline theta rhythm and gamma power changes during focused attention on mental calculation: an MEG beamformer analysis |
| title_sort | frontal midline theta rhythm and gamma power changes during focused attention on mental calculation an meg beamformer analysis |
| topic | gamma band beamformer Magnetoencephalography (MEG) Event-related desynchronization (ERD) focused attention Synthetic Aperture Magnetometry (SAM) |
| url | http://journal.frontiersin.org/Journal/10.3389/fnhum.2014.00406/full |
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