کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9016379 | 1128094 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of alcohol on spontaneous neuronal oscillations: A combined magnetoencephalography and electroencephalography study
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کلمات کلیدی
MMNBAC - LACElectroencephalography - الکتروانسافالوگرافیAlcohol - الکلMEG - بهfMRI - تصویرسازی تشدید مغناطیسی کارکردیfunctional magnetic resonance imaging - تصویرسازی تشدید مغناطیسی کارکردیAlpha rhythm - ریتم آلفاBeta rhythm - ریتم بتاblood ethanol concentration - غلظت اتانول خونmagnetoencephalography - مغناطیس مغزMagnetoencephalography (MEG) - مغناطیسسپالوگرافی (MEG)mismatch negativity - ناسازگاری منفیEEG - نوار مغزیElectroencephalography (EEG) - نوار مغزی، الکتروانسفالوگرافی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
روانپزشکی بیولوژیکی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Electroencephalography (EEG) and magnetoencephalography (MEG) can detect different aspects of alcohol effects on auditory processing measured with event-related potentials and magnetic fields. The present study aimed to detect alcohol-induced changes in spontaneous neuronal oscillations with combined EEG and MEG techniques. The effects of alcohol on spontaneous neuronal rhythms were studied in 12 healthy subjects after 0.8 g/kg alcohol or juice in a double-blind, placebo-controlled, cross-over design using simultaneous high-resolution MEG and EEG in eyes-open and eyes-closed conditions. The data were analyzed with a power spectral density analysis. MEG recording showed that alcohol significantly increased the relative power of alpha rhythm (8-10 Hz) and reduced the relative power of beta activity (17-25 Hz) in both left and right hemispheres, but only in the eyes-closed condition. These effects did not depend on gender. No analogous statistically significant changes were observed in EEG rhythms. However, the power of alpha and beta rhythms was positively correlated in MEG and EEG recordings, indicating that MEG and EEG reflect similar processes. A distinct sensitivity of MEG and EEG to the sources of cortical oscillations, a better signal-to-noise ratio of MEG, as well as strong spatial blurring of potentials in EEG are most likely the reasons for the observed differences in the effects of alcohol on spontaneous oscillations as detected with two methods.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Neuro-Psychopharmacology and Biological Psychiatry - Volume 29, Issue 5, June 2005, Pages 687-693
Journal: Progress in Neuro-Psychopharmacology and Biological Psychiatry - Volume 29, Issue 5, June 2005, Pages 687-693
نویسندگان
Vadim V. Nikulin, Anna V. Nikulina, Hidehisa Yamashita, Essi Marttinen Rossi, Seppo Kähkönen,