(n.) The act of oscillating; a swinging or moving backward and forward, like a pendulum; vibration.
(n.) Fluctuation; variation; change back and forth.
Example Sentences:
(1) It is suggested the participation of glycogen (starch) in the self-oscillatory mechanism of the futile cycle formed by the phosphofructokinase and fructose bisphosphatase reactions may give rise to oscillations with the period of 10(3)-10(4) min, which may serve as the basis for the cell clock.
(2) By using increased feed-forward gain in a sampled-data control model we simulated the pattern of macrosaccadic oscillation.
(3) Indirect blood pressure measurement techniques included automated oscillometry, manual auscultation, visual onset of oscillation (flicker) and return-to-flow methods.
(4) In general, oscillations were more apparent at suboptimal concentrations of anti-IgE.
(5) The possible mechanisms behind the oscillations are discussed.
(6) Under cyclic uptake conditions alveolar gases follow an oscillating time course, because gas concentrations tend to increase during inspiration and to decrease during expiration.
(7) It imitates the conventional percussion massage of the thorax by introducing high-frequency gas oscillations (300 impulses per minute) into the tracheobronchial system.
(8) sec.-1); b) an enhancement of fast (15-25 Hz) oscillations in the cortical spontaneous electrical activity and weakening and modification of the effects of the blockader of synthesis of MA-alpha-methyl-dioxiphenylalanine.
(9) In the spinalized preparation, steady-state and nonsteady-state responses have an equal likelihood of emerging from the initial cycles of a paw-shake response, suggesting that regular coupling of joint oscillations is not planned by pattern-generating networks within lumbosacral segments.
(10) The LVOR in the presence of visual targets (VLVOR) was tested by recording human vertical eye and head movements during self-generated vertical linear oscillation (averaging 2.7 Hz at peak excursion of 3.2 cm) while subjects alternately fixated targets at D = 36, 142, and 424 cm.
(11) In some bladders the voltage step produced current oscillations similar to those obtained after the epithelium had been challenged with a serosal osmotic step (Gordon, 1988).
(12) Intramembrane faces were visualized in the marine dinoflagellate Gonyaulax polyedra by the freeze-fracture technique, in order to test a prediction of a membrane model for circadian oscillations--i.e;, that membrane particle distribution and size change with time in the circadian cycle.
(13) Airway closure, as assessed by an alveolar capsule technique during small oscillations in lobar volume, occurred at PL less than or equal to 7.5 cm H2O.
(14) To examine the effects of focally cooling three areas (rostral, intermediate, and caudal) of the ventral medullary surface (VMS) on respiratory oscillations in cervical sympathetic and phrenic nerve activity, 12 cats were anesthetized, vagotomized, paralyzed, and artificially ventilated with 7% CO2 in O2.
(15) The forced oscillation technique is a noninvasive and effort-independent test to characterize the mechanical impedance of the respiratory system.
(16) Two phases were observed: initially, [Ca2+]i is raised in a single rapid transient to a maximum averaging 8.0 microM, and in a second phase TRH causes a series of rapid [Ca2+]i oscillations with maxima around 1.0 microM, which are probably due to the enhanced firing of action potentials.
(17) IJPs disrupt the regular pattern of myenteric potential oscillations.
(18) The oscillations displayed a period averaging 9 minutes.
(19) The effect of the drugs on respiratory resistance (Rrs), measured using a forced oscillation technique, was measured both before and after the inhalation of a dose of capsaicin which caused less than two coughs.
(20) However, the magnitude of the pressure oscillation even at tidal volumes four times normal was always significantly below that observed during spontaneous eupnic respiration.
Wavelet
Definition:
(n.) A little wave; a ripple.
Example Sentences:
(1) Positive wavelets preceding the primary cortical response were also diminished by the occlusion, suggesting that ischemia affected the thalamocortical white matter.
(2) Most significantly, however, it can also track sporadic or nonstationary irregularities in the shape of an individual acoustic wavelet.
(3) Wavelets were introduced by Grossman and Morlet in 1984.
(4) Latency and amplitude for various wavelets were plotted against signal intensity.
(5) The number of circuits and wavelets increased in a dose-dependent fashion.
(6) These functional distinctions between the last and the earlier wavelets are consistent with their representing the activity of different retinal generators.
(7) As the electrode was advanced proximally, the wavelets disappeared as a function of retinal depth.
(8) Following far-field potential of P14 after median nerve stimulation, we identified several small wavelets, designated here as fast frequency potentials or FFP, over the ascending and descending phases of the major negative wave of 'N20.'
(9) The spin density can be reconstructed with an inverse wavelet transform.
(10) Each wavelet had an amplitude maximum at a certain stimulus intensity level.
(11) It was supposed that this was the site of re-entry for a cycling wavelet subsidiary to the main flutter wave.
(12) It is often preceded by a brief wavelet of depolarization ascribed to the so-called back-response.4.
(13) Oscillatory potentials resembling those seen in human VEPs are observed riding on N40; analysis of MUA in conjunction with sources and sinks coincident with these wavelets provides evidence that they derive from both thalamocortical and cortical activity.
(14) Wavelets are already used for speech recognition, geophysics investigations and fractal analysis.
(15) The OPs consisted of three to four wavelets with a mean peak interval of approximately 6.5 msec, consistent with that recorded with conventional full-field stimuli over the entire retina.
(16) Rods responded to red flicker with discrete wavelets up to 5 Hz.
(17) Regardless of the number of OP wavelets, the last OP wavelet increased in amplitude and decreased in implicit time to a greater extent than did the earlier wavelet(s).
(18) HNR, however, is usually inflated by cycle-to-cycle variations of fundamental frequency period because zero padding is used for time normalization of the wavelet.
(19) Other time-frequency representations, such as the Wigner distribution, short-time spectral estimators, and the wavelet transform, have also been investigated.
(20) The wavelet transform, which is the decomposition of a signal into a set of independent frequency channels, is shown to be a useful diagnostic tool in the analysis of heartbeat sounds.