نتایج جستجو برای: do meg
تعداد نتایج: 853300 فیلتر نتایج به سال:
BACKGROUND A major motivation in designing the new infant and child magnetoencephalography (MEG) system described in this manuscript is the premise that electrophysiological signatures (resting activity and evoked responses) may serve as biomarkers of neurodevelopmental disorders, with neuronal abnormalities in conditions such as autism spectrum disorder (ASD) potentially detectable early in de...
The factor-independent Dami/HEL and Meg-01 and factordependent Mo7e leukemic cell lines were used as models to investigate JAK/STAT signal transduction pathways in leukemic cell proliferation. Although Dami/HEL and Meg-01 cell proliferation in vitro was independent of and unresponsive to exogenous cytokines including granulocyte-macrophage colony-stimulating factor (GM-CSF), interleukin-3 (IL-3...
معیاری نوین برای رتبهبندی مقاومت تخمینگرهای ارتباطات کانالهای EEG/MEG در مقابل آرتیفکت هدایت حجمی
ﺩﺭ ﺩﺍﺩﻩﻫﺎی EEG/MEG، ﺁﺭﺗﻴﻔﻜﺖ ﻫﺪﺍﻳﺖ ﺣﺠﻤﻰ ﺑﻪ ﺻﻮﺭﺕ ﺗﺮﻛﻴﺐ ﺧﻄﻰ ﻟﺤﻈﻪﺍی ﻓﻌﺎﻟﻴﺖ ﻣﻨﺎﺑﻊ ﻣﻐﺰی ﺩﺭ ﻛﺎﻧﺎﻝﻫﺎ ﻣﺸﺎﻫﺪﻩ ﻣﻰﺷﻮﺩ. ﻳﻜﻰ ﺍﺯ ﻭﻳﮋﮔﻰﻫﺎی ﻣﻬﻢ ﺗﺨﻤﻴﻦﮔﺮﻫﺎی ﺍﻳﺪﻩﺁﻝ ﺍﺭﺗﺒﺎﻃﺎﺕ ﻣﻐﺰی، ﻣﻘﺎﻭﻣﺖ ﺑﻪ ﺁﺭﺗﻴﻔﻜﺖ ﻫﺪﺍﻳﺖ ﺣﺠﻤﻰ ﺍﺳﺖ؛ ﻳﻌﻨﻰ ﻫﺪﺍﻳﺖ ﺣﺠﻤﻰ ﻣﻨﺎﺑﻊ ﻣﻐﺰی ﻣﺴﺘﻘﻞ ﻫﺮﮔﺰ ﻧﺒﺎﻳﺪ ﻣﻨﺠﺮ ﺑﻪ ﺗﺨﻤﻴﻦ ﺍﺭﺗﺒﺎﻃﺎﺕ ﻣﻌﻨﻰﺩﺍﺭی ﺑﻴﻦ ﻛﺎﻧﺎﻝﻫﺎی EEG/MEG ﺷﻮﺩ. ﺗﺎﻛﻨﻮﻥ ﻫﻴﭻ ﻣﻌﻴﺎﺭی ﺑﺮﺍی ﻣﻘﺎﻳﺴﻪ ﺳﻄﺢ ﻣﻘﺎﻭﻣﺖ ﺗﺨﻤﻴﻦﮔﺮﻫﺎی ﻣﺨﺘﻠﻒ ﺍﺭﺗﺒﺎﻃﺎﺕ ﻣﻐﺰی ﺩﺭ ﻣﻘﺎﺑﻞ ﺁﺭﺗﻴﻔﻜﺖ ﻫﺪﺍﻳﺖ ﺣﺠﻤﻰ ﺩ...
1 Introduction Cortical areas activated by olfactory stimulation have not been made clear yet, though a few studies were reported [1-3]. We are trying to localize the sources of olfactory MEG. The olfactory response becomes quickly weak because of subject's habituation. Then the data for source localization have little number of averaging and include much noise. The estimation error of localiza...
In the present study, the effects of liquid crystal-related compounds on the megakaryocytopoiesis and thrombopoiesis were evaluated in vitro using CD34+ cells prepared from human placental and umbilical cord blood (CB). About 20 kinds of compounds were tested for their effects on the clonal growth of CB CD34+ megakaryocytic progenitor cells (CFU-Meg) in plasma clot culture. The compounds, disso...
It is difficult to perform ictal vs. interictal MEG localization studies. MEG recordings of epileptic seizures are rare and are often accompanied by patient movements. However, during routine MEG recordings of a presurgical patient with epilepsy, a complex partial seizure was recorded with a whole head neuromagnetometer (4D Neuroimaging Magnes WHS2500). During seizure, the patient opened his ey...
Stacie and Meg—juniors at Atlas High School—soon must submit their course requests for next year. They have completed 3 years of science as mandated by the school system and must decide whether to take additional courses. Physics is an option, and although it is not required they believe that taking it may help with college admission. To date they have received similar grades (As and Bs) in sci...
The in vitro growth of early (burst-forming unit-megakaryocyte [BFU-meg]) and late (colony-forming unit-megakaryocyte [CFU-meg]) megakaryocyte progenitors was investigated in midtrimester human fetal blood and compared with adult bone marrow. Most of the experiments were performed in a serum-free fibrin-clot assay, using purified hematopoietic progenitor (CD34+) cells. High BFU-meg and CFU-meg ...
09.30-10.30 Aalto University presentations Risto Ilmoniemi: Towards better accuracy and reliability: Hybrid MEG–MRI technology Matti Stenroos: Forward and inverse models for MEG signal interpretation Lauri Parkkonen: High-resolution, real-time and hyperscanning MEG Riitta Salmelin: MEG of language function: beyond univariate analysis of evoked responses Hanna Renvall: MEG signals as pro...
The phase slope index (PSI) is a method to disclose the direction of frequency-specific neural interactions from magnetoencephalographic (MEG) time series. A fundamental property of PSI is that of vanishing for linear mixing of independent neural sources. This property allows PSI to cope with the artificial instantaneous connectivity among MEG sensors or brain sources induced by the field sprea...
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