کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3047843 1185067 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
EEG correlates of subcortical optokinetic nystagmus
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی عصب شناسی
پیش نمایش صفحه اول مقاله
EEG correlates of subcortical optokinetic nystagmus
چکیده انگلیسی

ObjectiveOur aim was to reveal the changes of concomitant scalp EEG activity during subcortical (stare-) optokinetic nystagmus (OKN).MethodsStare-OKN of 10 subjects was evoked and recorded simultaneously with the EEG. Frequency distribution of OKN-beats was determined in each subject. Power changes of alpha and beta frequency bands of the EEG during OKN stimulation were statistically analysed.ResultsDuring continuous subcortical OKN–the EEG alpha power decreased significantly while beta power increase was not significant. A significant transient alpha power enhancement around the onset of subcortical OKN-clusters was detected.ConclusionsWe found significant changes in the parieto-occipital alpha EEG activity during subcortical OKN. The transient alpha synchronisation at the beginning of each OKN-cluster is a paradox phenomenon which might indicate increased visual attention.SignificanceThe present study is the first report investigating EEG changes related to subcortical OKN. Our findings suggest the involvement of cortical mechanisms in the generation of stare-OKN. The results might help in the elucidation of cortico-genicular mechanisms of ocular movements under physiological and pathological conditions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Clinical Neurophysiology - Volume 118, Issue 3, March 2007, Pages 551–557
نویسندگان
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