نتایج جستجو برای: entrainment factor

تعداد نتایج: 850125  

Journal: :Expert Systems 2009
Dean Cvetkovic Robert Powers Irena Cosic

The concept of linked oscillators in biological control systems has long been established. Frequency entrainment is a predominant explanation behind many biological rhythms. In this paper a preliminary examination of electroencephalographic entrainment is made to survey the possibility and methods of achieving signal entrainment at the highest level of neurological organization and function. A ...

2005
PETER CALDWELL CHRISTOPHER S. BRETHERTON ROBERT WOOD

Mixed-layer budgets of boundary layer mass, moisture, and liquid water static energy are estimated from 6 days of data collected at 20°S, 85°W (a region of persistent stratocumulus) during the East Pacific Investigation of Climate (EPIC) stratocumulus cruise in 2001. These budgets are used to estimate a mean diurnal cycle of entrainment and, by diagnosing the fluxes of humidity and liquid water...

2011
R. Morales A. Nenes H. Jonsson R. C. Flagan J. H. Seinfeld

[1] This study investigates the ability of a droplet activation parameterization (which considers the effects of entrainment and mixing) to reproduce observed cloud droplet number concentration (CDNC) in ambient clouds. Predictions of the parameterization are compared against cloud averages of CDNC from ambient cumulus and stratocumulus clouds sampled during CRYSTAL‐FACE (Key West, Florida, Jul...

2015
Ani Nenkova Agustin Gravano Julia Hirschberg

Cognitive theories of dialogue hold that entrainment, the automatic alignment between dialogue partners at many levels of linguistic representation, is key to facilitating both production and comprehension in dialogue. In this paper we examine novel types of entrainment in two corpora—Switchboard and the Columbia Games corpus. We examine entrainment in use of high-frequency words (the most comm...

2017
Andrew Thwaites Josef Schlittenlacher Ian Nimmo-Smith William D. Marslen-Wilson Brian C.J. Moore

A prominent feature of the auditory system is that neurons show tuning to audio frequency; each neuron has a characteristic frequency (CF) to which it is most sensitive. Furthermore, there is an orderly mapping of CF to position, which is called tonotopic organization and which is observed at many levels of the auditory system. In a previous study (Thwaites et al., 2016) we examined cortical en...

2014
Nai Ding Jonathan Z. Simon

Auditory cortical activity is entrained to the temporal envelope of speech, which corresponds to the syllabic rhythm of speech. Such entrained cortical activity can be measured from subjects naturally listening to sentences or spoken passages, providing a reliable neural marker of online speech processing. A central question still remains to be answered about whether cortical entrained activity...

Journal: :Respiratory care 2012
Adam W Bostick Gregory A Naworol Tyler J Britton Timothy R Ori Shawn K French Stephen Derdak

BACKGROUND High-frequency oscillatory ventilation (HFOV) has been utilized as a rescue oxygenation therapy in adults with ARDS over the last decade. The HFOV oscillating piston can generate negative pressure during the exhalation cycle, which has been termed active exhalation. We hypothesized that this characteristic of HFOV entrains CO(2) into the inspiratory limb of the circuit and increases...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2010
Julie S Pendergast Rio C Friday Shin Yamazaki

A fundamental property of circadian clocks is that they entrain to environmental cues. The circadian genes, Period1 and Period2, are involved in entrainment of the mammalian circadian system. To investigate the roles of the Period genes in photic entrainment, we constructed phase response curves (PRC) to light pulses for C57BL/6J wild-type, Per1(-/-), Per2(-/-), and Per3(-/-) mice and tested wh...

Journal: :Journal of mathematical biology 2011
Joseph P Previte Natalie Sheils Kathleen A Hoffman Tim Kiemel Eric D Tytell

In the vertebrate spinal cord, a neural circuit called the central pattern generator produces the basic locomotory rhythm. Short and long distance intersegmental connections serve to maintain coordination along the length of the body. As a way of examining the influence of such connections, we consider a model of a chain of coupled phase oscillators in which one oscillator receives a periodic f...

2014
PHILIP HOCHENDONER WILLIAM MATHER NICHOLAS BUTZIN CURTIS OGLE

Submitted for the MAR14 Meeting of The American Physical Society Entrainment of a Synthetic Oscillator through Queueing Coupling1 PHILIP HOCHENDONER, WILLIAM MATHER, NICHOLAS BUTZIN, CURTIS OGLE, Virginia Tech — Many biological systems naturally exhibit (often noisy) oscillatory patterns that are capable of being entrained by external stimuli, though the mechanism of entrainment is typically ob...

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