نتایج جستجو برای: 8 hz and alpha 8
تعداد نتایج: 16953717 فیلتر نتایج به سال:
The default mode network is active during restful wakefulness and suppressed during goal-driven behavior. We hypothesize that inhibitory interference with spontaneous ongoing, that is, not task-driven, activity in the angular gyrus (AG), one of the core regions of the default mode network, will enhance the dominant idling EEG alpha rhythms observed in the resting state. Fifteen right-handed hea...
in the recent years, the coherence index is used in many electroencephalographic studies for investigation of brain connectivity in children with adhd disorder. it is suggested that the coherence is a useful index in discrimination of adhd subjects from normal subjects. however, a few studies are accomplished in subtypes of adhd to identify of differences in functional connectivity between adhd...
Patients suffering from prodromal (i.e., amnestic mild cognitive impairment, aMCI) and overt Alzheimer's disease (AD) show abnormal cortical sources of resting state electroencephalographic (EEG) rhythms. Here we tested the hypothesis that these sources show extensive abnormalities in liver cirrhosis (LC) patients with a cognitive impairment due to covert and diffuse hepatic encephalopathy (CHE...
Abstract The aim of this study was to investigate the brain asymmetry and coherence between healthy controls and patients with alexithymia. Twenty four volunteers (14 alexithymic patients and 10 normal volunteers) were included in this study. All participants were asked to complete the Beck Anxiety Inventory (BAI), and Beck Depression Inventory (BDI) and Farsi version of Toronto Alexithymia ...
In the literature on EEG during working memory (WM), the role of alpha power (8-13 Hz) during WM retention has remained unclear. We recorded EEG while 18 subjects retained sets of consonants in memory for 3 s; setsize (ss4, ss6, ss8) determines memory workload. Theta power (4-8 Hz) increased with workload in all subjects in middle frontal electrodes. Using ICA, the increase in theta could be at...
This exploratory study investigated EEG power changes during memory activation in patients with amnestic mild cognitive impairment (MCI). Twelve MCI patients and 16 age-matched controls underwent EEG registration during two conventional EEG conditions ('eyes closed' and 'eyes open') and three memory conditions ('word memory', 'picture memory' and 'animal fluency'). For all conditions, EEG power...
We obtain a type of Ay\'{o}n-Beato-Garc\'{\i}a (ABG) related black hole solutions with five parameters: the mass $m$, charge $q$, and three dimensionless parameters $\alpha$, $\beta$ $\gamma$ associated nonlinear electrodynamics. find that this holes is regular under conditions: $\alpha \gamma \geqslant 6$, $\beta 8$, $\gamma >0$. Here we focus on saturated case: $\alpha={6}/{\gamma}$ ={8}/{\ga...
OBJECTIVE It has been reported that GSM electromagnetic fields (GSM-EMFs) of mobile phones modulate--after a prolonged exposure--inter-hemispheric synchronization of temporal and frontal resting electroencephalographic (EEG) rhythms in normal young subjects [Vecchio et al., 2007]. Here we tested the hypothesis that this effect can vary on physiological aging as a sign of changes in the function...
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