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S Zenone

Publications and source records attributed to S Zenone.

4 recordsLinked to original sources
PubMed1983

Artificial neural nets: dependence of the EEG amplitude's probability distribution on statistical parameters.

The statistical laws governing the output of a population of unitary generators are not explicit with regard to the effect of population size and properties of the individual generators on the summed activity. Experimental work was therefore undertaken with artificial nerve nets, the activity of which simulates with a high degree of realism individual nerve cells and the electroencephalogram. It was found that the summed activity is not affected by the statistical properties of single generators even in nets of only 200-1000 elements. On the other hand, the output of the net is highly sensitive to the level of connectivity between individual generators. When connectivity is low, the summed output is distributed in normal (Gaussian) fashion. The output of the net becomes less and less Gaussian with increase in coupling between the generators.

Animals↗
PubMed1982

Encoding of visual information: correlation of EEG response to intracellular response.

The intracellular average evoked response to full field flash in cat visual cortex was seen to have constant PSP correlates in every individual response, with a less constant relationship to spike activity. All components of the averaged evoked response in the gross EEG are explicable in the response of a single cell, including a component of latency 100 ms for which there is evidence of initiation at the apical dendrites. The data support the hypothesis that information about photostimulation is encoded at the level of the individual cell, with distortion resulting from extraneous "noise".

Animals↗
PubMed1980

A neural net model for the alpha-rhythm.

Because of the enormous complexity which characterizes the activity of the brain a special effort has been made toward the development of neural models. These models are necessarily based on fundamental simplification of neural structures, and neural mechanisms. It is however necessary that any assumed mechanism be based on acceptable physiological criteria. We have developed such a model in the past (Anninos, 1969; Anninos et al., 1970) and in this paper we elaborate on it and attempt to incorporate in it a mechanism which will give rise to alpha-rhythm activity.

Alpha Rhythm↗