quantal


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quantal

(kwŏn′tl)
adj.
Biology Of or designating an all-or-none response or effect: a quantal reaction.

quan′tal·ly adv.

quantal

(kwant′ăl) [L. quantum, how much + -al]
1. Pert. to quantum theory.
Pert. to a response to a stimulus marked by the presence or absence of a specific reaction, e.g., an all or none response.
References in periodicals archive ?
Borst and Sakmann (1996) (17) showed that excitatory postsynaptic currents (EPSCs) are linear summations of quanta (mEPSCs) at the calyx synapse, consistent with the quantal hypothesis.
Distribution of mEJPs latencies in all lines were best-fitted with a monoexponential equation predicted by the Poisson model well, thus confirming that under all experimental conditions, the random nature of spontaneous quantal release is not altered.
(2011) Toxicokinetic-toxicodynamic modeling of quantal and graded sublethal endpoints: A brief discussion of concepts.
However, making a quantal distinction between dangerously high [E.sub.2] concentrations (>2000 pmol/L) and typical premenopausal concentrations (200-800 pmol/L) did not require quantitative accuracy at physiological [E.sub.2] concentrations.
Such evidence lends support to the idea that NO increases the presynaptic quantal release of GABA and the open probability (P0) of [GABA.sub.A] channels, since IPSC currents were abolished by the [GABA.sub.A] channel blocker, picrotoxin (82).
Synaptic vesicles in the presynaptic terminals release their contents continuously, even at rest, into the synaptic cleft (quantal release) that contributes to the miniature excitatory postsynaptic potential (mEPSP) recorded from the neuronal soma (Figure 1(a)).
Palfrey, "Quantal response equilibrium and overbidding in private-value auctions," Journal of Economic Theory, vol.
Keating, "RCAN1 regulates vesicle recycling and quantal release kinetics via effects on calcineurin activity," Journal of Neurochemistry, vol.
Their general finding indirectly motivates the feasibility of more easily deriving multidimensional quantal particle structures, and therefore would support indirectly the earlier-announced more specific Close-Neppe discoveries.
Yu et al., "Differences in the [H.sub.2]S-induced quantal release of catecholamine in adrenal chromaffin cells of neonatal and adult rats," Toxicology, vol.
The Quantal Theory of Speech (QTS) (Stevens and Blumstein 1975) suggests an alternative approach to vowel systems.