دورية أكاديمية
How the Dorsolateral Prefrontal Cortex Controls Affective Processing in Absence of Visual Awareness - Insights From a Combined EEG-rTMS Study.
العنوان: | How the Dorsolateral Prefrontal Cortex Controls Affective Processing in Absence of Visual Awareness - Insights From a Combined EEG-rTMS Study. |
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المؤلفون: | Keuper K; Institute of Biomagnetism and Biosignalanalysis, University Hospital Münster, University of Münster, Münster, Germany.; Otto Creutzfeldt Center for Cognitive and Behavioral Neuroscience, University of Münster, Münster, Germany.; Laboratory of Neuropsychology, The University of Hong Kong, Pokfulam, Hong Kong.; Laboratory of Social Cognitive Affective Neuroscience, The University of Hong Kong, Pokfulam, Hong Kong., Terrighena EL; Laboratory of Neuropsychology, The University of Hong Kong, Pokfulam, Hong Kong.; Laboratory of Social Cognitive Affective Neuroscience, The University of Hong Kong, Pokfulam, Hong Kong., Chan CCH; Applied Cognitive Neuroscience Laboratory, Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Kowloon, Hong Kong., Junghoefer M; Institute of Biomagnetism and Biosignalanalysis, University Hospital Münster, University of Münster, Münster, Germany.; Otto Creutzfeldt Center for Cognitive and Behavioral Neuroscience, University of Münster, Münster, Germany., Lee TMC; Laboratory of Neuropsychology, The University of Hong Kong, Pokfulam, Hong Kong.; Laboratory of Social Cognitive Affective Neuroscience, The University of Hong Kong, Pokfulam, Hong Kong.; The State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Pokfulam, Hong Kong.; Institute of Clinical Neuropsychology, The University of Hong Kong, Pokfulam, Hong Kong. |
المصدر: | Frontiers in human neuroscience [Front Hum Neurosci] 2018 Oct 16; Vol. 12, pp. 412. Date of Electronic Publication: 2018 Oct 16 (Print Publication: 2018). |
نوع المنشور: | Journal Article |
اللغة: | English |
بيانات الدورية: | Publisher: Frontiers Research Foundation Country of Publication: Switzerland NLM ID: 101477954 Publication Model: eCollection Cited Medium: Print ISSN: 1662-5161 (Print) Linking ISSN: 16625161 NLM ISO Abbreviation: Front Hum Neurosci Subsets: PubMed not MEDLINE |
أسماء مطبوعة: | Original Publication: Lausanne, Switzerland : Frontiers Research Foundation, 2008- |
مستخلص: | The dorsolateral prefrontal cortex (DLPFC) plays a key role in the modulation of affective processing. However, its specific role in the regulation of neurocognitive processes underlying the interplay of affective perception and visual awareness has remained largely unclear. Using a mixed factorial design, this study investigated effects of inhibitory continuous theta-burst stimulation (cTBS) of the right DLPFC (rDLPFC) compared to an Active Control condition on behavioral ( N = 48) and electroencephalographic ( N = 38) correlates of affective processing in healthy Chinese participants. Event-related potentials (ERPs) in response to passively viewed subliminal and supraliminal negative and neutral natural scenes were recorded before and after cTBS application. We applied minimum-norm approaches to estimate the corresponding neuronal sources. On a behavioral level, we found evidence for reduced emotional interference by, and less negative and aroused ratings of negative supraliminal stimuli following rDLPFC inhibition. We found no evidence for stimulation effects on self-reported mood or the behavioral discrimination of subliminal stimuli. On a neurophysiological level, rDLPFC inhibition relatively enhanced occipito-parietal brain activity for both subliminal and supraliminal negative compared to neutral images (112-268 ms; 320-380 ms). The early onset and localization of these effects suggests that rDLPFC inhibition boosts automatic processes of "emotional attention" independently of visual awareness. Further, our study reveals the first available evidence for a differential influence of rDLPFC inhibition on subliminal versus supraliminal neural emotion processing. Explicitly, our findings indicate that rDLPFC inhibition selectively enhances late (292-360 ms) activity in response to supraliminal negative images. We tentatively suggest that this differential frontal activity likely reflects enhanced awareness-dependent down-regulation of negative scene processing, eventually leading to facilitated disengagement from and less negative and aroused evaluations of negative supraliminal stimuli. |
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فهرسة مساهمة: | Keywords: EEG; ERP; awareness; dlPFC; emotion perception; rTMS |
تواريخ الأحداث: | Date Created: 20181103 Latest Revision: 20240607 |
رمز التحديث: | 20240607 |
مُعرف محوري في PubMed: | PMC6198096 |
DOI: | 10.3389/fnhum.2018.00412 |
PMID: | 30386222 |
قاعدة البيانات: | MEDLINE |
تدمد: | 1662-5161 |
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DOI: | 10.3389/fnhum.2018.00412 |