کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8841241 | 1614709 | 2017 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Relevance of Dorsolateral and Frontotemporal Cortex on the Phonemic Verbal Fluency - A fNIRS-Study
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کلمات کلیدی
tDCSHHbdeoxyhemoglobinO2HbOxyhemoglobinDLPFCASRSFTCNIRSVFTfrontotemporal cortexROIPFCDPFIFCTranscranial direct current stimulation - تحرک جریان مستقیم TranscranialTranscranial direct current stimulation (tDCS) - تحرک جریان مستقیم ترانس کرانیال (tDCS)Verbal fluency test - تست روانی کلامیNear-infrared spectroscopy (NIRS) - طیف سنجی نزدیک به مادون قرمز (NIRS)Near-infrared spectroscopy - طیف شناسی فروسرخ نزدیکprefrontal cortex - قشر prefrontalInferior frontal cortex - قشر زیر جلدیDorsolateral prefrontal cortex (DLPFC) - قشر غده فوق کلیه (DLPFC)dorsolateral prefrontal cortex - قشر پیشانی غدد درون رحمیCenter for Epidemiological Studies Depression Scale - مرکز مطالعات اپیدمیولوژی مقیاس افسردگیregion of interest - منطقه مورد نظرPANAS - گرم
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
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چکیده انگلیسی
Non-invasive brain stimulation is widely used to investigate and manipulate specific brain functions to broaden knowledge about healthy people, and also to provide for a potential treatment option for people with various psychopathological disorders that do not adequately benefit from traditional treatments. Nevertheless, the underlying mechanisms have not been fully investigated yet. The aim of the present study was to investigate whether we could alter the brain activity during a test for executive functioning. Therefore, we measured the activity in the prefrontal cortex (PFC) using near-infrared spectroscopy (NIRS) while applying bilateral anodal and cathodal transcranial direct current stimulation (tDCS, 1â¯mA) to the left and right dorsolateral PFC (dlPFC) during the phonemic part of the verbal fluency test (VFT). A total of 61 young and healthy participants were divided into three groups: left anodal/right cathodal, left cathodal/right anodal stimulation or sham. All participants performed the letter-cued part of the VFT and a control task. Brain activation was simultaneously measured using NIRS. We found only the frontotemporal cortex (FTC) but not the dorsolateral prefrontal cortex (DLPFC) to be activated. Furthermore, stimulating the DLPFC bilaterally by tDCS showed no significant differences between the three different groups when performing the VFT, neither in performance nor in cortical activation. Instead, we found a significant increase in deoxygenated hemoglobin [HHb] while performing the control task in the left anodal/right cathodal stimulation group compared to sham. Interestingly, also an influence on the mood of our participants was observed. These results are of importance especially regarding a better understanding of the influence of the dlPFC on the VFT.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 367, 26 December 2017, Pages 169-177
Journal: Neuroscience - Volume 367, 26 December 2017, Pages 169-177
نویسندگان
Martin J. Herrmann, Anna K. Horst, Sophia Löble, Mira T. Möll, Andrea Katzorke, Thomas Polak,