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Generators and Connectivity of the Early Auditory Evoked Gamma Band Response

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Generators and Connectivity of the Early Auditory Evoked Gamma Band Response. / Polomac, Nenad; Leicht, Gregor; Nolte, Guido; Andreou, Christina; Schneider, Till R; Steinmann, Saskia; Engel, Andreas K; Mulert, Christoph.

In: BRAIN TOPOGR, Vol. 28, No. 6, 11.2015, p. 865-78.

Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review

Harvard

Polomac, N, Leicht, G, Nolte, G, Andreou, C, Schneider, TR, Steinmann, S, Engel, AK & Mulert, C 2015, 'Generators and Connectivity of the Early Auditory Evoked Gamma Band Response', BRAIN TOPOGR, vol. 28, no. 6, pp. 865-78. https://doi.org/10.1007/s10548-015-0434-6

APA

Polomac, N., Leicht, G., Nolte, G., Andreou, C., Schneider, T. R., Steinmann, S., Engel, A. K., & Mulert, C. (2015). Generators and Connectivity of the Early Auditory Evoked Gamma Band Response. BRAIN TOPOGR, 28(6), 865-78. https://doi.org/10.1007/s10548-015-0434-6

Vancouver

Polomac N, Leicht G, Nolte G, Andreou C, Schneider TR, Steinmann S et al. Generators and Connectivity of the Early Auditory Evoked Gamma Band Response. BRAIN TOPOGR. 2015 Nov;28(6):865-78. https://doi.org/10.1007/s10548-015-0434-6

Bibtex

@article{20d1e34df4794f9987a83819eb8963de,
title = "Generators and Connectivity of the Early Auditory Evoked Gamma Band Response",
abstract = "High frequency oscillations in the gamma range are known to be involved in early stages of auditory information processing in terms of synchronization of brain regions, e.g., in cognitive functions. It has been shown using EEG source localisation, as well as simultaneously recorded EEG-fMRI, that the auditory evoked gamma-band response (aeGBR) is modulated by attention. In addition to auditory cortex activity a dorsal anterior cingulate cortex (dACC) generator could be involved. In the present study we investigated aeGBR magnetic fields using magnetoencephalography (MEG). We aimed to localize the aeGBR sources and its connectivity features in relation to mental effort. We investigated the aeGBR magnetic fields in 13 healthy participants using a 275-channel CTF-MEG system. The experimental paradigms were two auditory choice reaction tasks with different difficulties and demands for mental effort. We performed source localization with eLORETA and calculated the aeGBR lagged phase synchronization between bilateral auditory cortices and frontal midline structures. The eLORETA analysis revealed sources of the aeGBR within bilateral auditory cortices and in frontal midline structures of the brain including the dACC. Compared to the control condition the dACC source activity was found to be significantly stronger during the performance of the cognitively demanding task. Moreover, this task involved a significantly stronger functional connectivity between auditory cortices and dACC. In accordance with previous EEG and EEG-fMRI investigations, our study confirms an aeGBR generator in the dACC by means of MEG and suggests its involvement in the effortful processing of auditory stimuli.",
author = "Nenad Polomac and Gregor Leicht and Guido Nolte and Christina Andreou and Schneider, {Till R} and Saskia Steinmann and Engel, {Andreas K} and Christoph Mulert",
year = "2015",
month = nov,
doi = "10.1007/s10548-015-0434-6",
language = "English",
volume = "28",
pages = "865--78",
journal = "BRAIN TOPOGR",
issn = "0896-0267",
publisher = "Kluwer Academic/Human Sciences Press Inc.",
number = "6",

}

RIS

TY - JOUR

T1 - Generators and Connectivity of the Early Auditory Evoked Gamma Band Response

AU - Polomac, Nenad

AU - Leicht, Gregor

AU - Nolte, Guido

AU - Andreou, Christina

AU - Schneider, Till R

AU - Steinmann, Saskia

AU - Engel, Andreas K

AU - Mulert, Christoph

PY - 2015/11

Y1 - 2015/11

N2 - High frequency oscillations in the gamma range are known to be involved in early stages of auditory information processing in terms of synchronization of brain regions, e.g., in cognitive functions. It has been shown using EEG source localisation, as well as simultaneously recorded EEG-fMRI, that the auditory evoked gamma-band response (aeGBR) is modulated by attention. In addition to auditory cortex activity a dorsal anterior cingulate cortex (dACC) generator could be involved. In the present study we investigated aeGBR magnetic fields using magnetoencephalography (MEG). We aimed to localize the aeGBR sources and its connectivity features in relation to mental effort. We investigated the aeGBR magnetic fields in 13 healthy participants using a 275-channel CTF-MEG system. The experimental paradigms were two auditory choice reaction tasks with different difficulties and demands for mental effort. We performed source localization with eLORETA and calculated the aeGBR lagged phase synchronization between bilateral auditory cortices and frontal midline structures. The eLORETA analysis revealed sources of the aeGBR within bilateral auditory cortices and in frontal midline structures of the brain including the dACC. Compared to the control condition the dACC source activity was found to be significantly stronger during the performance of the cognitively demanding task. Moreover, this task involved a significantly stronger functional connectivity between auditory cortices and dACC. In accordance with previous EEG and EEG-fMRI investigations, our study confirms an aeGBR generator in the dACC by means of MEG and suggests its involvement in the effortful processing of auditory stimuli.

AB - High frequency oscillations in the gamma range are known to be involved in early stages of auditory information processing in terms of synchronization of brain regions, e.g., in cognitive functions. It has been shown using EEG source localisation, as well as simultaneously recorded EEG-fMRI, that the auditory evoked gamma-band response (aeGBR) is modulated by attention. In addition to auditory cortex activity a dorsal anterior cingulate cortex (dACC) generator could be involved. In the present study we investigated aeGBR magnetic fields using magnetoencephalography (MEG). We aimed to localize the aeGBR sources and its connectivity features in relation to mental effort. We investigated the aeGBR magnetic fields in 13 healthy participants using a 275-channel CTF-MEG system. The experimental paradigms were two auditory choice reaction tasks with different difficulties and demands for mental effort. We performed source localization with eLORETA and calculated the aeGBR lagged phase synchronization between bilateral auditory cortices and frontal midline structures. The eLORETA analysis revealed sources of the aeGBR within bilateral auditory cortices and in frontal midline structures of the brain including the dACC. Compared to the control condition the dACC source activity was found to be significantly stronger during the performance of the cognitively demanding task. Moreover, this task involved a significantly stronger functional connectivity between auditory cortices and dACC. In accordance with previous EEG and EEG-fMRI investigations, our study confirms an aeGBR generator in the dACC by means of MEG and suggests its involvement in the effortful processing of auditory stimuli.

U2 - 10.1007/s10548-015-0434-6

DO - 10.1007/s10548-015-0434-6

M3 - SCORING: Journal article

C2 - 25926268

VL - 28

SP - 865

EP - 878

JO - BRAIN TOPOGR

JF - BRAIN TOPOGR

SN - 0896-0267

IS - 6

ER -