Results 231 to 240 of about 26,062 (284)

Synaptic high-frequency jumping synchronises vision to high-speed behaviour

open access: yes
Mansour N   +20 more
europepmc   +1 more source

Quantal and Graded Analysis of Dosage-Effect Relations

Science, 1961
Loewe's recommendations regarding treatment of stimulus-response relations are criticized. Conditions are described where quantal analysis is justified. Loewe's interpretation of his graded analysis must be modified in the light of the fact that response curves for individuals frequently cross. Superior lines of attack on the problem are suggested.
L J, CRONBACH, G C, GLESSER
openaire   +4 more sources

Quantal analysis and synaptic efficacy in the CNS

Trends in Neurosciences, 1991
Quantal analysis of synaptic transmission at connections between neurons in the CNS has provided insights concerning the structural constraints on transmitter release and postsynaptic responsiveness. However, it has proven difficult in many cases to resolve the size and variability of a single quantum or to distinguish clear peaks in amplitude ...
H, Korn, D S, Faber
openaire   +4 more sources

Analysis of Quantal Response Data.

Biometrics, 1994
Data, preliminary analyses and mechanistic models maximum-likelihood fitting of simple models extensions and alternatives extended models for quantal assay data describing time to response overdispersion non-parametric and robust methods design and sequential methods.
Sybil L. Crawford, B. J. T. Morgan
  +5 more sources

Quantit Analysis: A Quantal Assay Refinement

Biometrics, 1977
A new tolerance distribution and inference procedure for quantal response assays is presented. This method is capable of fitting a wide variety of shapes of response curves. Specific cases of this new method include quantal response assay analyses based on the double exponential distribution, the logistic distribution (logit analysis), and the uniform ...
Copenhaver, T. W., Mielke, P. W.
openaire   +2 more sources

Quantal analysis based on spectral methods

Pflügers Archiv European Journal of Physiology, 1994
A method for calculating quantal size based on spectral analysis of postsynaptic potential (PSP) amplitude distributions was developed and tested by Monte-Carlo techniques. It was combined with a test to reveal the bias of the estimate of quantal size and to determine whether the peaks in amplitude distributions reflect quantal release or a sampling ...
A E, Dityatev   +3 more
openaire   +2 more sources

Quantal analysis and long-term potentiation

Comptes Rendus de l'Académie des Sciences - Series III - Sciences de la Vie, 1998
Quantal analysis is useful for assessing the pre- and/or post-synaptic locus of the expression of long-term tetanic potentiation with the condition, however, that the studied synaptic potentials have been evoked by single cell stimulations, as is the case with paired recordings of identified neurons.
H, Korn, D S, Faber
openaire   +2 more sources

Limits of quantal analysis reliability: quantal and unimodal constraints and setting of confidence intervals for quantal size

Journal of Neuroscience Methods, 1993
An accurate objective method for determining the reliability of estimates of quantal size (Q) at central synapses was developed. To do this, distributions of amplitudes of postsynaptic responses were simulated by convolving a number of discrete amplitudes separated by equal increments Q with gaussian noise, after which the value of Q was estimated by ...
A E, Dityatev, H P, Clamann
openaire   +2 more sources

Doubts About Quantal Analysis

Journal of Neurophysiology, 2007
to the editor: In an impressive series of articles, Korn and co-workers (e.g., [Faber and Korn 1988][1]; [Faber et al. 1992][2], [1995][3]; [Korn et al. 1981][4], [1982][5], [1987][6]; reviews in [Korn and Faber 1991][7], [2005][8]) described electrophysiological recordings performed on ...
openaire   +1 more source

Direct Analysis of Quantal Radiation Response Data

International Journal of Radiation Biology and Related Studies in Physics, Chemistry and Medicine, 1986
A direct analysis is proposed for quantal (all-or-nothing) responses to fractionated radiation and endpoint-dilution assays of cell survival. As opposed to two-step methods such as the reciprocal-dose technique, in which ED50 values are first estimated for different fractionation schemes and then fit (as reciprocals) against dose per fraction, all raw ...
H D, Thames   +5 more
openaire   +2 more sources

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