Results 291 to 300 of about 1,331,499 (342)

The nature of spontaneous cavernosal activity

BJU International, 1999
Objective To determine the characteristics of spontaneous cavernosal activity (SCA) and to relate this to previous descriptions of spontaneous potentials from the cavernosum (single potential analysis of cavernosal activity, SPACE). Subjects and methods
Colakoglu, Z, Kutluay, E, Ertekin, C
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Spontaneous activity of the fetal bladder

American Journal of Obstetrics and Gynecology, 1974
Spontaneous fetal bladder activity was examined in fetal sheep (116 to 120 days' gestation) by injection of radioactive substances directly into the bladder or intravenously. In all fetuses, spontaneous micturition could be demonstrated, contrary to a recent study with fetal dogs.
J E, Robillard, K, Thayer, C, Kulvinskas, F G, Smith   +3 more
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Spontaneous Activity and the Urinary Bladder

2019
The urinary bladder has two functions: to store urine, when it is relaxed and highly compliant; and void its contents, when intravesical pressure rises due to co-ordinated contraction of detrusor smooth muscle in the bladder wall. Superimposed on this description are two observations: (1) the normal, relaxed bladder develops small transient increases ...
Fry, Christopher H, McCloskey, Karen D
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Neural development: The role of spontaneous activity

Current Biology, 2021
Developing nervous systems exhibit spontaneous activity. Two new studies identify the instructive influence such activity has on the formation of functionally appropriate circuits.
Richard A, Baines, Matthias, Landgraf
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Spontaneous Activity: Signal or Noise?

Science, 1999
It is thought that spontaneous electrical activity in the brain may contribute to the specifity of the neuronal connections laid down during development of the nervous system. David McCormick considers the evidence for this in a Perspective. A study of the visual system in awake baby ferrets that have not yet opened their eyes suggests that ...
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SPONTANEOUS ACTIVITY IN VISUAL SYSTEMS

American journal of optometry and archives of American Academy of Optometry, 1972
ABSTRACT A survey of the recent vision literature was conducted to obtain information about spontaneous activity in visual systems. Contemporary facts and speculations on three general topics are reviewed: (a) the characterization of, and the variation in, spontaneous activity: (b) the genesis of spontaneous activity in the visual ...
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Spontaneous activity of living cells

Biosystems, 2007
The purpose of this article is to give a theoretical framework to describe the mechanism of internal signal generation and discuss the physiological significance of spontaneous activities of certain living cells [Oosawa, F., 2001. Spontaneous signal generation in living cells. Bull. Math. Biol. 63, 643].
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Neuromagnetic investigation of Synchronized Spontaneous Activity

Brain Topography, 1989
We present an overview of the investigations on Synchronized Spontaneous Activity (SSA) in the somatosensory and visual modality. The novelty of the stimulation paradigm and of the off-line data analysis, as well as the capability of the neuromagnetic technique to localize and follow in time the generators responsible for the SSA are used to ...
NARICI, LIVIO, Romani,GL
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Spontaneous fission activities

Nuclear Data Sheets, 1979
Abstract For several years, the Nuclear Data Project has been using a standard computer-readable format 1 to organize the results of data evaluations published in Nuclear Data Sheets . Adopted values for level energies, spins, half-lives, radiation properties, and spectroscopic factors are recorded in standard blocks of information, which are ...
W.B. Ewbank, Y.A. Ellis, M.R. Schmorak
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Modeling the Spontaneous Activity of the Auditory Cortex

Journal of Computational Neuroscience, 2005
We present a rate model of the spontaneous activity in the auditory cortex, based on synaptic depression. A Stochastic integro-differential system of equations is derived and the analysis reveals two main regimes. The first regime corresponds to a normal activity. The second regime corresponds to epileptic spiking. A detailed analysis of each regime is
Evgeniy Bart, Shaowen Bao, David Holcman
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