Zh Vyssh Nerv Deyat+
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Zh Vyssh Nerv Deyat+ · Jan 1998
Comparative Study[Audiogenic seizures in rats of different genetic strains].
The temporal parameters of audiogenic seizures were compared in rats of different genetic strains (KM, Wistar, WAG/Rij, and GK). The probability of the origin of audiogenic fits was defined in each of the strains. It was found out that in Wistar, WAG/Rij, and GK rats the audiogenic fits developed as a double-wave pattern. ⋯ Frequency spectra were compared of different kinds of stimuli applied for the audiogenic testing. Seizures were more easily provoked by the ultrasound signals with a complex structure. The resemblance is discussed between such signals and the natural communicative acoustic signals of rats as well as a possible role of emotional factor in the development of the audiogenic seizures.
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Zh Vyssh Nerv Deyat+ · Sep 1979
[Dynamics of rabbit visual cortex neuron reactions to repetitive nonvisual stimuli and their complexes with light].
The experiments revealed two forms of dynamics of responses to sounds and electro-cutaneous stimulation of the rabbit's leg and their complexes with light--rapid and slow ones. Assumptions are made on different mechanisms of these forms of dynamics. 37% of all studied cells showed different direction of the discharge dynamics in responses to the sound and electro-cutaneous stimulation or the discharge dynamics only in response to one type of stimulation. This may suggest a modal specificity of responses to different non-visual stimuli.
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Zh Vyssh Nerv Deyat+ · May 1977
[Interrelationship between spatial synchronization and rhythmic components of the human EEG].
The main object of the work was to elucidate the functional significance of different human EEG rhythms. Cross-correlation and spectral characteristics at the background and during mental work were studied in thirteen subjects by recording from four points of the left hemisphere. ⋯ The alpha-rhythm becomes less pronounced everywhere in parallel to the decrease in synchronism of its fluctuations in different zones; at the same time low-frequency activity (delta-theta) increases both by the amplitude of oscillations and the capacity for its unidirectional shifts over the whole cortex. The least distinct change is observed in the beta-rhythm.