منابع مشابه
Local field potentials, BOLD and spiking activity – relationships and physiological mechanisms
Extracellular voltage fluctuations (local field potentials, LFPs) reflecting neural mass action are ubiquitous across species and brain regions. Numerous studies have characterized the properties of LFP signals in the cortex to study sensory and motor computations as well as cognitive processes like attention, perception and memory. In addition, its extracranial counterpart – the electroencepha...
متن کاملThe effect of a serotonin-induced dissociation between spiking and perisynaptic activity on BOLD functional MRI.
The relationship of the blood oxygen-level-dependent (BOLD) signal to its underlying neuronal activity is still poorly understood. Combined physiology and functional MRI experiments suggested that local field potential (LFP) is a better predictor of the BOLD signal than multiunit activity (MUA). To further explore this relationship, we simultaneously recorded BOLD and electrophysiological activ...
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چکیده بررسی فعالیت ضد اکسیدانی و ضدمیکروبی عصاره گیاه بن سرخ (allium jesdianum) به کوشش: زهرا مقیمی هدف از این تحقیق بررسی میزان ترکیبات فنولی کل، ترکیبات فلاوونوئیدی کل، فعالیت ضداکسیدانی و ضدمیکروبی عصاره ی گیاه تازه و خشک بن سرخ بود. استخراج عصاره به روش های غوطه وری، استفاده از همزن مغناطیسی، دستگاه مایکروویو، امواج فراصوت و گرمادهی مقاومتی و با استفاده از متانول، اتانول و آب به عنوا...
Gap junctions between striatal fast-spiking interneurons regulate spiking activity and synchronization as a function of cortical activity.
Striatal fast-spiking (FS) interneurons are interconnected by gap junctions into sparsely connected networks. As demonstrated for cortical FS interneurons, these gap junctions in the striatum may cause synchronized spiking, which would increase the influence that FS neurons have on spiking by the striatal medium spiny (MS) neurons. Dysfunction of the basal ganglia is characterized by changes in...
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34 35 Transient gamma-band (40 – 80 Hz) spatiotemporal patterns are hypothesized to play important 36 roles in cortical function. Here, we report the direct observation of gamma oscillations as 37 spatiotemporal waves induced by targeted optogenetic stimulation, recorded by intracortical 38 multichannel extracellular techniques in macaque monkeys during their awake, resting states. 39 Microelec...
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ژورنال
عنوان ژورنال: Nature Neuroscience
سال: 2008
ISSN: 1097-6256,1546-1726
DOI: 10.1038/nn0508-523