نتایج جستجو برای: response phase

تعداد نتایج: 1520005  

A Hadjiakhoondi A Shafiee M Khanavi M Sharifzadeh

Anti-inflammatory effects of acetonic and methanolic extracts of aerial parts of Stachys byzanthina were investigated in this study. For assessment of anti-inflammatory properties, two well-characterized inflammatory models, formalin test and carrageenan-induced paw edema were used. In the former, the recording of the early phase started immediately after formalin injection and lasted for 10 mi...

Journal: :EURASIP J. Adv. Sig. Proc. 2007
Linnéa Rosenbaum Per Löwenborg Håkan Johansson

The frequency-response masking (FRM) technique was introduced as a means of generating linear-phase FIR filters with narrow transition band and low arithmetic complexity. This paper proposes an approach for synthesizingmodulatedmaximally decimated FIR filter banks (FBs) utilizing the FRM technique. A new tailored class of FRM filters is introduced and used for synthesizing nonlinear-phase analy...

1997
P. Reviriego

This paper presents a class of Infinite Impulse Response (IIR) filters which have approximately Linear Phase response in their pass bands. The new filters provide better magnitude response and worse phase linearity for a given order and transition bandwidth than previous designs. They can then be used as an alternative to those designs when we want some degree of phase linearity but the magnitu...

2000
Xiaoan Sun Scott C. Douglas

AND APPROXIMATION X. Sun and S.C. Douglas Department of Electrical Engineering Southern Methodist University Dallas, Texas 75275 USA ABSTRACT In this paper, we present a simple adaptive ltering solution to general phase equalization and phase modeling tasks. Our proposed algorithm maintains approximate allpass constraints on the coe cients of an adaptive FIR lter in a self-stabilized manner. An...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2010
Roy M Smeal G Bard Ermentrout John A White

We review the principal assumptions underlying the application of phase-response curves (PRCs) to synchronization in neuronal networks. The PRC measures how much a given synaptic input perturbs spike timing in a neural oscillator. Among other applications, PRCs make explicit predictions about whether a given network of interconnected neurons will synchronize, as is often observed in cortical st...

2012
Juan D. Deaton

Wireless spectrum is becoming a vital and scarce resource due to the increase development and deployment of mobile device and their associated applications. Dynamic Spectrum Access (DSA) represents one of the few ways that our nation can be able cope with our anticipated spectrum crisis1. Wireless communications is a key tool in today’s economy and efficient use of this spectrum is paramount. I...

Journal: :Computers in biology and medicine 2007
Dimitrios G. Tsalikakis H. G. Zhang Dimitrios I. Fotiadis George P. Kremmydas Lampros K. Michalis

In this work, the dynamic response of the sinoatrial node (SAN), the natural pacemaker of the heart, to short external stimuli is investigated using the Zhang et al. model. The model equations are solved twice for the central cell and for the peripheral cell. A short current pulse is applied to reset the spontaneous rhythmic activity of the single sinoatrial node cell. Depending on the stimulus...

2005
R. F. Schulte J. Tsao P. Boesiger K. P. Pruessmann

Introduction Broad-bandwidth radio-frequency (RF) pulses are important for various kinds of MR experiments. The achievable RF field strength B1 of the transmitting system is limited on whole-body scanners, leading to small bandwidths of regular amplitude-modulated RF pulses. In order to increase the bandwidth, pulses with inherently reduced maximum B1 amplitude (B1max) are necessary. Overlaying...

A Hadjiakhoondi A Shafiee M Khanavi M Sharifzadeh

Anti-inflammatory effects of acetonic and methanolic extracts of aerial parts of Stachys byzanthina were investigated in this study. For assessment of anti-inflammatory properties, two well-characterized inflammatory models, formalin test and carrageenan-induced paw edema were used. In the former, the recording of the early phase started immediately after formalin injection and lasted for 10 mi...

2013
Joshua A. Goldberg Jeremy F. Atherton James Surmeier

1 reveals the synchronization properties of mouse globus 2 pallidus neurons 3 4 Abbreviated title: A direct spectral estimate of the iPRC 5 6 Joshua A. Goldberg1,2, Jeremy F. Atherton1 and D. James Surmeier1 7 8 1Department of Physiology, Feinberg School of Medicine, Northwestern University, 9 Chicago, Illinois, 60611 10 2Department of Medical Neurobiology, Institute of Medical Research Israel-...

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