(v. i.) To fly apart or in pieces; of break open; to yield to force or pressure, especially to a sudden and violent exertion of force, or to pressure from within; to explode; as, the boiler had burst; the buds will burst in spring.
(v. i.) To exert force or pressure by which something is made suddenly to give way; to break through obstacles or limitations; hence, to appear suddenly and unexpectedly or unaccountably, or to depart in such manner; -- usually with some qualifying adverb or preposition, as forth, out, away, into, upon, through, etc.
(v. t.) To break or rend by violence, as by an overcharge or by strain or pressure, esp. from within; to force open suddenly; as, to burst a cannon; to burst a blood vessel; to burst open the doors.
(v. t.) To break.
(v. t.) To produce as an effect of bursting; as, to burst a hole through the wall.
(n.) A sudden breaking forth; a violent rending; an explosion; as, a burst of thunder; a burst of applause; a burst of passion; a burst of inspiration.
(n.) Any brief, violent exertion or effort; a spurt; as, a burst of speed.
(n.) A sudden opening, as of landscape; a stretch; an expanse.
(n.) A rupture or hernia; a breach.
Example Sentences:
(1) This modulation results from repetitive, alternating bursts of excitatory and inhibitory postsynaptic potentials, which are caused at least in part by synaptic feedback to the command neurons from identified classes of neurons in the feeding network.
(2) Pokeweed mitogen-stimulated rat spleen cells were identified as a reliable source of rat burst-promoting activity (PBA), which permitted development of a reproducible assay for rat bone marrow erythroid burst-forming units (BFU-E).
(3) PMNs could be primed for PMA-triggered oxidative burst by muramyl peptide molecules (MDP) and two of its adjuvant active nonpyrogenic derivatives.
(4) For each temporal position of the independent noise, discriminability was a function of the ratio of the duration of the independent noise (tau) to the total burst duration.
(5) Peripheral blood monocytes undergo an oxidative burst similar to that seen in neutrophils.
(6) The 20-year-old now holds two world records after he broke the 50m best at the European Championships in Berlin during a 2014 season which saw him burst on to the international stage.
(7) Masking experiments are demonstrated for electrical frequency-modulated tone bursts from 1,000 to 10,000 cps and from 10,000 to 1,000 cps with superimposed clicks.
(8) Isolated outer hair cells from the organ of Corti of the guinea pig have been shown to change length in response to a mechanical stimulus in the form of a tone burst at a fixed frequency of 200 Hz (Canlon et al., 1988).
(9) 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.
(10) 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.
(11) When we gave her a gift of a few books in English, she burst out crying.
(12) Our hypothesis is that phase unlocking may be one of the induction mechanisms of spike-burst activity.
(13) As the frequency of the stimulus bursts was progressively changed, the sinoatrial (SA) nodal pacemaker cells became synchronized with the repetitive bursts of stimuli over a certain range of burst frequencies.
(14) Respiratory burst activity was evaluated in monolayers of rat inflammatory peritoneal macrophages by measuring: (1) luminol-dependent chemiluminescence and (2) the production of 14CO2 from the oxidation of [1-14C] glucose.
(15) After more than 10 weeks, CD34+, CD33- cells gradually recovered, as erythroid burst colony-forming cells increased following GM colony-forming cells.
(16) It is suggested that during increased levels of extracellular adenosine the response of LGND relay neurones to activating brainstem influences will be depressed, and a pattern of Ca(2+)-mediated burst firing will be favoured.
(17) Polygraphic and videotape recordings, carried out for several nights, showed that after nearly each REM period, he would wake up briefly, presenting eye blinking followed by a burst of generalized hypersynchronous theta to start his seizures.
(18) To test this hypothesis 30 Wistar rats were subjected to laparotomy and colonic resection and treated with 5-Fluorouracil or Mitomycin C. The bursting strength of the abdominal scars and the colonic anastomotic bursting pressure revealed some interference in the rats treated with 5-Fluorouracil (Student's t test P less than 0.05) but none in the case of Mitomycin C. This preliminary study deserves to be followed up.
(19) For now however, what’s left of their fan base are enjoying a rare burst of sunshine.
(20) Similar responses were obtained with gated noise bursts and by pauses in a series of clicks.
Burster
Definition:
(n.) One that bursts.
Example Sentences:
(1) Currents through calcium-activated non-specific cation (CAN) channels were studied in the fast burster neurone of Helix aspersa and Helix pomatia.
(2) Composite excitatory post-synaptic potentials (e.p.s.p.s) resulting from electrotonic and chemical synaptic junctions were recorded from eighteen interneurones following stimulation of the I2 burster axon in the isolated lamprey spinal cord.
(3) At higher (greater than 10 Hz) PS firing frequencies, rhythmic activity in all the pyloric neurons, including the pacemakers (PD, anterior burster), is abolished, except in cells (ventricular dilator, inferior cardiac) controlling the pyloric valve.
(4) Increasing gNa and decreasing gCl, where gi is the maximal conductance for species i, produces bursts of action potentials (Burster N).
(5) A delayed current decrease associated with prolonged depolarization was studied in R(15) (the parabolic burster) of Aplysia by using intracellular recording and voltage clamp techniques.2.
(6) Cells synaptically driven but not antidromically activated by neural stalk stimulation, which thus probably receive an afferent input from supraoptic neurones, were classified as 'regular' or 'bursters' on the basis of their spontaneous electrical activity.
(7) This current was studied using cell-attached and inside-out patches from the right parietal fast burster neuron of Helix pomatia.
(8) The majority (twelve out of eighteen) of synaptically excited cells (o.d.+) were bursters and the majority of inhibited (o.d.-) cells (eleven out of nineteen) were regular, but only one o.d.+ burster showed any change of activity (inhibition) before milk ejection.
(9) They show different steady-state I-V curves under simulated voltage-clamp conditions; in simulations that mimic a steady-state I-V curve taken under experimental conditions only Burster N shows a negative slope resistance region.
(10) Our results indicate that CAN currents in Helix burster neurones are modulated by cyclic AMP-dependent membrane phosphorylation.
(11) Our results suggest that in the cat, for saccades of amplitude smaller than 20 deg, there is a variable degree of suppression which is provided by a projection of excitatory bursters (EBNs) on second-order vestibular neurones through inhibitory type II neurones.
(12) with three basic patterns of spontaneous activity: ;silent' cells (s., four cells, 3%); ;low-frequency burster' cells (l.f.b., twenty-six cells, 21%); and ;continuously active' cells (c.a., seventy-nine cells, 63%).6.
(13) Voltage clamp studies reveal that halothane will eliminate the slow inward current that underlies oscillatory activity in burster neurons, while high pressure shifts the negative resistance region of the current without causing its elimination.
(14) Of the thirty-two repetitive bursters, twenty-four received no apparent patterned synaptic input and the phasic burst behaviour was voltage dependent.
(15) IA was largest in pyloric dilator (PD) and PY cells, smaller in the anterior burster (AB), LP, and inferior cardiac (IC) cells, and undetectable in the VD cell.
(16) Based on the hypothesis that bursting activity of RPa1 neuron results from the activation of presynaptic unidentified peptidergic interneuron(s) with persistent activity and on data presented it is suggested that inhibition of bursting activity evoked by application of dopamine or anal nerve stimulation is a consequence of decreased efficiency of synaptic transmission between the interneuron initiating bursting activity and the burster.
(17) It consists of two (protractor and retractor) groups of neurons with mutual inhibitory connections, neurons of each group being endogenous bursters.
(18) These neurones, like burster-driving neurones described in paralysed cats, were characterized by a tonic increase of firing for head turning in the contraversive direction (type II) associated to bursts for each vestibular quick phase in the same direction.
(19) Burster neurons seem to play a special role in this mechanism.
(20) We prove that an asymmetry between the uncoupled bursters can accelerate the system with respect to the free cells, this effect depending on the characteristics of the coupling.