Modulation of Conflict Processing by Theta-Range tACS over the Dorsolateral Prefrontal Cortex
Behavioral response conflict arises in the color-word Stroop task and triggers the cognitive control network. Midfrontal theta-band oscillations correlate with adaptive control mechanisms during and after conflict resolution. In order to prove causality, in two experiments, we applied transcranial a...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Neural Plasticity |
| Online Access: | http://dx.doi.org/10.1155/2019/6747049 |
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| author | Albert Lehr Niklas Henneberg Tarana Nigam Walter Paulus Andrea Antal |
| author_facet | Albert Lehr Niklas Henneberg Tarana Nigam Walter Paulus Andrea Antal |
| author_sort | Albert Lehr |
| collection | DOAJ |
| description | Behavioral response conflict arises in the color-word Stroop task and triggers the cognitive control network. Midfrontal theta-band oscillations correlate with adaptive control mechanisms during and after conflict resolution. In order to prove causality, in two experiments, we applied transcranial alternating current stimulation (tACS) at 6 Hz to the dorsolateral prefrontal cortex (DLPFC) during Stroop task performance. Sham stimulation served as a control in both experiments; 9.7 Hz tACS served as a nonharmonic alpha band control in the second experiment. We employed generalized linear mixed models for analysis of behavioral data. Accuracy remained unchanged by any type of active stimulation. Over both experiments, the Stroop effect (response time difference between congruent and incongruent trials) was reduced by 6 Hz stimulation as compared to sham, mainly in trials without prior conflict adaptation. Alpha tACS did not modify the Stroop effect. Theta tACS can both reduce the Stroop effect and modulate adaptive mechanisms of the cognitive control network, suggesting midfrontal theta oscillations as causally involved in cognitive control. |
| format | Article |
| id | doaj-art-51f7d98b090440bd8831c766191aa1c1 |
| institution | Kabale University |
| issn | 2090-5904 1687-5443 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Neural Plasticity |
| spelling | doaj-art-51f7d98b090440bd8831c766191aa1c12025-02-03T01:12:32ZengWileyNeural Plasticity2090-59041687-54432019-01-01201910.1155/2019/67470496747049Modulation of Conflict Processing by Theta-Range tACS over the Dorsolateral Prefrontal CortexAlbert Lehr0Niklas Henneberg1Tarana Nigam2Walter Paulus3Andrea Antal4Department of Clinical Neurophysiology, University Medical Center Göttingen, Göttingen 37073, GermanyDepartment of Clinical Neurophysiology, University Medical Center Göttingen, Göttingen 37073, GermanyDepartment of Clinical Neurophysiology, University Medical Center Göttingen, Göttingen 37073, GermanyDepartment of Clinical Neurophysiology, University Medical Center Göttingen, Göttingen 37073, GermanyDepartment of Clinical Neurophysiology, University Medical Center Göttingen, Göttingen 37073, GermanyBehavioral response conflict arises in the color-word Stroop task and triggers the cognitive control network. Midfrontal theta-band oscillations correlate with adaptive control mechanisms during and after conflict resolution. In order to prove causality, in two experiments, we applied transcranial alternating current stimulation (tACS) at 6 Hz to the dorsolateral prefrontal cortex (DLPFC) during Stroop task performance. Sham stimulation served as a control in both experiments; 9.7 Hz tACS served as a nonharmonic alpha band control in the second experiment. We employed generalized linear mixed models for analysis of behavioral data. Accuracy remained unchanged by any type of active stimulation. Over both experiments, the Stroop effect (response time difference between congruent and incongruent trials) was reduced by 6 Hz stimulation as compared to sham, mainly in trials without prior conflict adaptation. Alpha tACS did not modify the Stroop effect. Theta tACS can both reduce the Stroop effect and modulate adaptive mechanisms of the cognitive control network, suggesting midfrontal theta oscillations as causally involved in cognitive control.http://dx.doi.org/10.1155/2019/6747049 |
| spellingShingle | Albert Lehr Niklas Henneberg Tarana Nigam Walter Paulus Andrea Antal Modulation of Conflict Processing by Theta-Range tACS over the Dorsolateral Prefrontal Cortex Neural Plasticity |
| title | Modulation of Conflict Processing by Theta-Range tACS over the Dorsolateral Prefrontal Cortex |
| title_full | Modulation of Conflict Processing by Theta-Range tACS over the Dorsolateral Prefrontal Cortex |
| title_fullStr | Modulation of Conflict Processing by Theta-Range tACS over the Dorsolateral Prefrontal Cortex |
| title_full_unstemmed | Modulation of Conflict Processing by Theta-Range tACS over the Dorsolateral Prefrontal Cortex |
| title_short | Modulation of Conflict Processing by Theta-Range tACS over the Dorsolateral Prefrontal Cortex |
| title_sort | modulation of conflict processing by theta range tacs over the dorsolateral prefrontal cortex |
| url | http://dx.doi.org/10.1155/2019/6747049 |
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