نتایج جستجو برای: low frequency stimulation
تعداد نتایج: 1795512 فیلتر نتایج به سال:
We evaluated renal adrenoceptor mediation of the renin secretion and antinatriuretic responses to low frequency (1.0 Hz) electrical stimulation of the renal nerves in the dog using renal a-adrenoceptor blockade with phentolamine {a-i/a-i), prazosin (a,), yohimbine (a2), and rauwolscine (a2), and /3-adrenoceptor blockade with d,/-propranolol OS1//S2) and atenolol (/?,). In all animals studied, r...
Deep-brain Magnetic Stimulation (DMS) is a noninvasive brain modulation method that improves hippocampal neural activity. The frequency of DMS has significant effect on the induced electric field. In this paper, we investigate relationship between stimulation and DMS-induced sensitivity distribution uniformity field are calculated to quantify relationship. results show frequency-dependent prope...
Introduction: Application of low-frequency stimulation (LFS) is a new method for treatment of drug resistant epileptic patients. Previous studies demonstrated that activation of receptors coupled to Gi proteins is one of the mechanisms of the anticonvulsant effect of LFS. Thus, in this study, alterations in the expression of RGS4 and RGS10 proteins, as negative regulators of Gi proteins, wer...
High- (?5Hz), but not low-frequency (?1Hz) rTMS (repetitive Transcranial Magnetic Stimulation) of the contralateral primary motor cortex (M1) can induce transient analgesic effects [5]. However, impact TMS frequency and pulse number remains poorly understood may present an opportunity to optimise efficacy promote long-term effects. Prior work indicated that a single session consisting 2,000, 50...
extremely low frequency (elf) electromagnetic field (elf-emfs) are widely employed in electrical appliances and different equipment such as television sets, elf-emfs can affect biological systems by increasing production ros. the altered balance between ros generation and elimination plays a critical role in a variety of pathologic conditions. ros levels have been observed in several hematopo...
1. The first experiment of this study determined the effects of low-frequency stimulation of the monkey superior colliculus on spontaneous saccades in the dark. Stimulation trains, subthreshold for eliciting short-latency fixed-vector saccades, were highly effective at biasing the metrics (direction and amplitude) of spontaneous movements. During low-frequency stimulation, the distribution of s...
OBJECTIVES The aim of this study was to determine the minimum amount of low-frequency acoustic information that is required to achieve speech perception benefit in listeners with a cochlear implant in one ear and low-frequency hearing in the other ear. DESIGN The recognition of monosyllabic words in quiet and sentences in noise was evaluated in three listening conditions: electric stimulation...
PURPOSE This study was conducted to investigate the effect of low-frequency electric cortical stimulation on epileptic focus in humans. METHODS We stimulated the epileptic focus in a patient with medically intractable mesial temporal lobe epilepsy (MTLE) by means of subdural electrodes and evaluated the change in the number of interictal epileptiform discharges. We used biphasic electric curr...
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