What's the difference between amplitude and attenuate?

Amplitude


Definition:

  • (n.) State of being ample; extent of surface or space; largeness of dimensions; size.
  • (n.) Largeness, in a figurative sense; breadth; abundance; fullness.
  • (n.) Of extent of capacity or intellectual powers.
  • (n.) Of extent of means or resources.
  • (n.) The arc of the horizon between the true east or west point and the center of the sun, or a star, at its rising or setting. At the rising, the amplitude is eastern or ortive: at the setting, it is western, occiduous, or occasive. It is also northern or southern, when north or south of the equator.
  • (n.) The arc of the horizon between the true east or west point and the foot of the vertical circle passing through any star or object.
  • (n.) The horizontal line which measures the distance to which a projectile is thrown; the range.
  • (n.) The extent of a movement measured from the starting point or position of equilibrium; -- applied especially to vibratory movements.
  • (n.) An angle upon which the value of some function depends; -- a term used more especially in connection with elliptic functions.

Example Sentences:

  • (1) After midazolam infusion, there was a 50% decrease in amplitude of P3 in response to target tones (P less than 0.006), whereas N3 latency increased by 40 ms (P less than 0.05).
  • (2) A significant correlation was found between the amplitude ratio of the R2 and the sensitivity ratio of the rapid off-response at short and long wavelengths.
  • (3) Intact rams exhibited GH secretory episodes of greater (P less than 0.01) amplitude than did castrated lambs.
  • (4) The maximum amplitude of the inward Na+ current, normalized by cell capacitance, is about sixfold larger, on the average, in LP lactotropes than in SP lactotropes.
  • (5) The examination of the standard waves' amplitude and latency of the brain stem auditory evoked response (BAEP) was performed in 20 guinea pigs (males and females, weighing 250 to 300 g).
  • (6) The amplitudes of the a-wave and the 01 decreased in dose-dependent manners, but their changes were less striking than those of the 01 latency.
  • (7) We have now started a prospective follow-up study in order to pursue the development of (a) p-ERG amplitudes and (b) funduscopic changes and visual acuity in these patients.
  • (8) Noradrenaline decreased the phasic contraction amplitude of the circular muscle and exerted a stimulant effect on the tone which suggested an existence of two alpha 1-adrenoceptor subtypes.
  • (9) elution patterns of the adducts formed by DBF metabolites with DNA and obtained in vivo at the optimal exposure time of 42-48 h were qualitatively very similar to the patterns obtained in vitro, but their amplitude was quantitatively reduced.
  • (10) In contrast, the average reduction in mean EEG amplitude with isoflurane was only 0.3% and there were neither periods of suppression nor any correlation between EEG amplitude and MAP.
  • (11) However, the effect of prior jaw motion and the effect of the recording site on the EMG amplitudes and on the vertical dimension of minimum EMG activity have not been documented.
  • (12) The ophthalmic headache's crisis is caused, in fact, by a spasm of convergence on an unknown exophory of which the amplitude of fusion is satisfying, and the presence of which can only be seen with test under screen.
  • (13) Moreover, the most recent combined application of the rat interstitial cell testosterone (RICT) bioassay and a novel multiple-parameter deonvolution model has allowed investigators to dissect plasma concentration profiles of bioactive LH into defined secretory bursts, which have numerically explicit amplitudes, locations in time, and durations, and are acted upon by determinable subject- and study-specific endogenous metabolic clearance rates.
  • (14) By this action, oxytocin is believed to increase the probability of successful regenerative spikes and thereby initiate electrical activity in quiescent preparations, increase the frequency of burst discharges, the number of spikes in each burst, and the amplitude of spikes in individual cells.
  • (15) Replication dependent on the SV40 origin and having the kinetics and approximate amplitude of an SV40 infection ensued.
  • (16) For the case of the fluctuating pressure, the strength of the artery becomes considerably lower than those under constant amplitude and two-step-multi-duplicated pulsatile pressure.
  • (17) Complex tones containing the first 20 harmonics of 50, 100, or 200 Hz, all at equal amplitude, were used.
  • (18) In the placebo group of 14 patients CNV-amplitudes even decreased after ten Infusions with multi-vitamins alone.
  • (19) ERGs of high amplitude and of normal wave form were recordable with prominent oscillatory potentials.
  • (20) increase in amplitude in both, hippocampus and neocortex was observed with MK 801 and ketamine and these agents also showed longer lasting influence.

Attenuate


Definition:

  • (v. t.) To make thin or slender, as by mechanical or chemical action upon inanimate objects, or by the effects of starvation, disease, etc., upon living bodies.
  • (v. t.) To make thin or less consistent; to render less viscid or dense; to rarefy. Specifically: To subtilize, as the humors of the body, or to break them into finer parts.
  • (v. t.) To lessen the amount, force, or value of; to make less complex; to weaken.
  • (v. i.) To become thin, slender, or fine; to grow less; to lessen.
  • (a.) Alt. of Attenuated

Example Sentences:

  • (1) This suggested that the chemical effects produced by shock waves were either absent or attenuated in the cells, or were inherently less toxic than those of ionizing irradiation.
  • (2) The results are consistent with our previous suggestion that lethality for virulent SFV infection results from a lethal threshold of damage to neurons in the CNS and that attenuating mutations may reduce neuronal damage below this threshold level.
  • (3) Exposure to nanomolar concentrations of saralasin, an Ang II agonist, attenuated the passage of the fluorophores across the monolayers by 50-75%.
  • (4) Furthermore, the ability of a vasopressin antagonist to lower arterial pressure in NTS hypertensive rats was markedly attenuated by clonidine treatment.
  • (5) These results indicate that during IPPV the increased Pcv attenuates the pressure gradient for venous return and decreases CO and that the compensatory increase in Psf is caused by a blood shift from unstressed to stressed blood volume.
  • (6) Mild, significant improvement was noted in one of the hearing components, "attenuation," and an adverse effect was shown on "distortion," owing to noise.
  • (7) It inhibits platelet and vascular smooth muscle activation by cGMP-dependent attenuation of the agonist-induced rise of intracellular free Ca2+.
  • (8) Genetic regulation of the ilvGMEDA cluster involves attenuation, internal promoters, internal Rho-dependent termination sites, a site of polarity in the ilvG pseudogene of the wild-type organism, and autoregulation by the ilvA gene product, the biosynthetic L-threonine deaminase.
  • (9) Pharmacodynamic relationships are not well established for other therapeutic effects of theophylline, such as attenuation of pharmacologically induced bronchoconstriction.
  • (10) Propranolol, 0.85 X 10(-6) M, did not significantly depress the ouabain-enhanced rate of phase 4 depolarization but did attenuate the response to epinephrine through beta blockade.
  • (11) After large bowel removal, there was impaired glucose tolerance and attenuated plasma insulin secretion.
  • (12) Studies were conducted in isolated, buffer-perfused rat lungs to determine if prostaglandin (PG) E1 attenuated pulmonary edema provoked by hydrogen peroxide (H2O2).
  • (13) The toxins preferentially attenuate a slow phase of KCl-evoked glutamate release which may be associated with synaptic vesicle mobilization.
  • (14) The Northern quahaug and a strain of the type 1 attenuated poliovirus were used as the working model.
  • (15) Our dynamic study indicated that: 1) a bolus injection of contrast medium with our method of CTA (CTA-B) produced an attenuation difference between liver and tumor which was about double that obtained with standard methods for CTA, and 2) marked tumor-liver attenuation differences (above 20 HU) persisted for more than 60 s in CTA-B and for not more than 20 s with conventional methods for CTA.
  • (16) It appears that the viscosity of the arterial wall must be the major source of attenuation in the larger arteries, while the viscosity of the blood plays a significant role only in the smaller vessels.
  • (17) Fluid movement out of the ICF space attenuated the decrease in the ECF space.
  • (18) We show that the two mutants (A44 and A46) affect attenuator control by different mechanisms.
  • (19) The type I cells are squamous and give off attenuated sheets of cytoplasm which spread widely over the septal surface; these sheets contain few organelles.
  • (20) A sequence of seven pairings of chili-flavored diet with prompt recovery from thiamine deficiency did significantly attenuate the innate aversion and may have induced a chili preference in at least one case.