system dynamics
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Bibliotheca cardiologica ; no. 31, 1973
318 s. : tab., grafy ; 24 cm
- MeSH
- balistokardiografie MeSH
- kardiologie MeSH
- kardiovaskulární fyziologické jevy MeSH
- Publikační typ
- kongresy MeSH
- Konspekt
- Patologie. Klinická medicína
- NLK Obory
- kardiologie
In rats with leukemia activity of liver mitochondrial enzymes are decreased at 6 months. Later, we noted compensatory activation of complexes II and III of the respiratory chain and transition to decompensation stage by final deadline. The activity of complex IV of the respiratory chain remains high. These changes result from increased lipid peroxidation and decreased activity of antioxidant protection enzymes.
- MeSH
- časové faktory MeSH
- injekce subkutánní MeSH
- jaterní mitochondrie * enzymologie imunologie účinky léků MeSH
- játra * imunologie účinky léků MeSH
- krysa rodu rattus MeSH
- leukemie chemicky indukované MeSH
- modely nemocí na zvířatech * MeSH
- nebezpečné látky škodlivé účinky MeSH
- výzkumný projekt MeSH
- zvířata MeSH
- Check Tag
- krysa rodu rattus MeSH
- zvířata MeSH
668 s. : il.
- MeSH
- balistokardiografie MeSH
- dítě MeSH
- echokardiografie MeSH
- kardiovaskulární systém MeSH
- lidé MeSH
- obezita MeSH
- Check Tag
- dítě MeSH
- lidé MeSH
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- Publikační typ
- srovnávací studie MeSH
The ubiquitous feature of the nervous system of wide spread occurrence of complex dynamics behaviour is treated. The cardinal question concerning the nature of generators of such complex behaviour, namely if it is ad hoc random or deterministic but strongly nonlinear, is analyzed. It is proved analytically that the discrete dynamics of single neurons with the sigmoidal transfer function is potentially chaotic. As the by-product the functional gain-threshold mechanism in neurons is derived. This allows for the new interpretations of famous experiments by Miyashita on squirell monkeys. Then it is shown that the continuous dynamics of the neural circuits of two-three neurons are endowed with the potentiality of chaotic firing, too. Finally, it will be argued that the classical dogma of stochastic or the ad hoc random neural coding can be taken as the limiting case of presenting new approach of deterministic or chaotic paradigm.
