نتایج جستجو برای: 12 hz electromagnetic

تعداد نتایج: 688376  

Journal: :General physiology and biophysics 2017
Ercan Ozdemir Ayse Demirkazik Sinan Gursoy Ahmet S Taskıran Olca Kilinc Gokhan Arslan

Several studies have demonstrated that the electromagnetic fields produce analgesic activity. The aim of this study was to investigate the effects of extremely low frequency (ELF) electromagnetic fields (EMF) on morphine analgesia and tolerance in rats. In the study, 78 adult male Wistar albino rats (approximately 240 ± 12 g) were used. The application of 50 Hz magnetic field, each day the same...

Journal: :Human brain mapping 2007
R W Thatcher D North C Biver

The purpose of this study was to compare EEG current source densities in high IQ subjects vs. low IQ subjects. Resting eyes closed EEG was recorded from 19 scalp locations with a linked ears reference from 442 subjects ages 5 to 52 years. The Wechsler Intelligence Test was administered and subjects were divided into low IQ (< or =90), middle IQ (>90 to <120) and high IQ (> or =120) groups. Low-...

Journal: :NeuroImage 2006
Jair Stern Daniel Jeanmonod Johannes Sarnthein

Functional brain imaging of pain over the last years has provided insight into a distributed anatomical matrix involved in pain processing which includes multiple cortical areas. EEG/MEG-based imaging studies have mostly relied on settings of evoked nociception. We report here the spontaneous presence of enhanced activations in the pain matrix of the patient group on the basis of continuous EEG...

2009
Vinay Graak Sarika Chaudhary B. S. Bal J. S. Sandhu

AIM The study was carried out to evaluate and compare the effect of low power, low frequency pulsed electromagnetic field (PEMF) of 600 and 800 Hz, respectively, in management of patients with diabetic polyneuropathy. SETTINGS AND DESIGNS The study was a randomized controlled trial performed in Guru Nanak Dev University and Medical College, Amritsar, India with different subject experimental ...

Journal: :Stroke 2009
Nuray Yozbatiran Miguel Alonso-Alonso Jill See Asli Demirtas-Tatlidede Daniel Luu Rehan R Motiwala Alvaro Pascual-Leone Steven C Cramer

BACKGROUND AND PURPOSE Electromagnetic brain stimulation might have value to reduce motor deficits after stroke. Safety and behavioral effects of higher frequencies of repetitive transcranial magnetic stimulation (rTMS) require detailed assessment. METHODS Using an active treatment-only, unblinded, 2-center study design, patients with chronic stroke received 20 minutes of 20 Hz rTMS to the ip...

2009
Gennadi Afinogenov Anna Afinogenova Andrey Kalinin

Available data allow assuming the presence of stimulation of reparative processes under influence of low-intensity electromagnetic field, commensurable with a magnetic field of the Earth. Research of effects of low-intensity electromagnetic fields on fibroblast proliferative activity in human lungs in cell culture was performed.The influence of a constant electromagnetic field, an alternating e...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 1996
A Bellossi V Pouvreau-Quillien C Rocher M Ruelloux

In a previous work a decrease in cholesterol and triglyceride plasma levels was observed in rats 24 hours after their exposure to a 12 Hz 6 mT pulsed magnetic field (PMF). This time, a study of intensity effects of a 12 Hz PMF for a sixty-minute exposure and of length of exposure for a 12 Hz 6 mT PMF took place. Non-linear effect-dose relationships were observed for the PMF intensity as well as...

Journal: :Journal of Inorganic and Organometallic Polymers and Materials 2021

Herein, flexible polyvinylidenefluoride (PVDF) nanocomposite films reinforced with different concentrations of graphene nanoplatelets (GNPs), montmorillonite (MMT) nanoclay and titanium dioxide (TiO2) nanoparticles (NPs) were prepared using a simple low-cost solution casting method. The surface morphology PVDF/GNPs/TiO2/MMT nanocomposites the interaction between PVDF, GNPs, TiO2 NPs MMT nanofil...

Journal: :Tissue & cell 2003
V Rajkovic M Matavulj D Gledic B Lazetic

Objective of our study was to use morphophysiological criteria in order to determine the sensitivity of male rat thyroid gland to an extremely low frequency electromagnetic field (ELF-EMF) influence and the ability of the gland to repair after period of exposure. Animals were exposed to 50Hz, 50-500 microT ELF-EMF for 3 months when a part of them (group I) were sacrificed, while the rest of ani...

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