نتایج جستجو برای: oscillatory potential
تعداد نتایج: 1085763 فیلتر نتایج به سال:
TASAKI, I. AND A. F. BAK. Discrete threshold and repetitive responses in the squid axon under ‘voltage-claw@ By using the so-called voltage-clamp technique, records were obtained indicating the presence of undulatory or oscillatory membrane current under fixed potential difference between the internal and external electrodes. This oscillatory membrane current was observed only when rectangular ...
The electroretinogram (ERG) response evoked in man by intense illumination pre sents a series of oscillatory potentials super imposed on the b-wave." These oscillatory potentials are of clinical importance, since in the presence of certain diseases they are reduced or disappear prior to some changes of the aand b-waves. Measurement of the amplitude of the os cillatory potential is difficult,...
Sympathetic stimulation induces weak salivation compared with parasympathetic stimulation. To clarify this phenomenon in salivary glands, we investigated cAMP-induced modulation of Ca(2+)-activated Cl(-) secretion from rat parotid and submandibular acinar cells because fluid secretion from salivary glands depends on the Cl(-) secretion. Carbachol (Cch), a Ca(2+)-increasing agent, induced hyperp...
AIM To examine the effects of taurine on the slow action potentials induced by KCl 24 mmol.L(-1) or tetrodotoxin 40 mumol.L(-1) in guinea pig papillary muscles. METHODS The transmembrane AP was recorded by a conventional glass microelectrode filled with KCl 3 mmol.L(-1). The muscles were exposed to high K(+)-Tyrode's solution or perfused with Tyrode's solution containing tetrodotoxin. Ouabain...
in new management approaches, in the organizations with inflexible structure, existing of red tapes and interruptions caused by limitations and also non-compliance with environmental changes, create demotivation among staff. with regard to the influence of job motivational potential and its relationship to the type of organizational structure( enabling and dissuasive), the goal of this research...
Recent studies suggest that beta (15-30 Hz) oscillatory activity in the subthalamic nucleus (STN) is dramatically increased in Parkinson's disease (PD) and may interfere with movement execution. Dopaminergic medications decrease beta activity and deep brain stimulation (DBS) in the STN may alleviate PD symptoms by disrupting this oscillatory activity. Depth recordings from PD patients have demo...
The authors obtain necessary and sufficient conditions for the existence of oscillatory solutions with a specified asymptotic behavior of solutions to a nonlinear neutral differential equation with distributed delay of third order. We give new theorems which ensure that every solution to be either oscillatory or converges to zero asymptotically. Examples dwelling upon the importance of applicab...
Oscillatory network dynamics are implicated in the functioning of healthy neural circuits and in disease pathology. Manipulating or controlling oscillatory dynamics hence has potential applications both for probing the functional role of oscillations in neural computation and as a therapeutic tool. We have explored the potential of closed-loop optogenetic feedback to manipulate oscillatory netw...
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