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E B Filippova

Publications and source records attributed to E B Filippova.

24 records · Page 2Linked to original sources
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[Lateralization of the extrapolation reflex in the rat].

Interhemispheric asymmetry of extrapolation reflex was studied in Norway rats. The experiments were carried out by the Krushinsky method with a screen in combination with a unilateral temporary decortication by means of spreading depression. It was shown that during isolated functioning of one hemisphere the ability for extrapolation of movement direction was observed in about half of the studied animals. By the criterion of the first round-about turn no functional interhemispheric asymmetry was found. By the criterion of four successive correct turns out of ten presentations, the right hemisphere dominated in achieving extrapolation.

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[The effect of the phases of the estrous cycle on functional interhemispheric asymmetry in rats].

The functional interhemispheric asymmetry was studied in rats during different phases of the estrual cycle in the tests of emotional resonance (avoidance of pain cry of a conspecific) and the open field locomotor and exploratory activity. Inactivation of hemispheres was accomplished by potassium spreading depression. During the open field activity the left hemisphere dominated in proestrus, the right hemisphere dominated in estrus, in metestrus the dominance of the right hemisphere decreased, and in diestrus the hemispheric asymmetry was not expressed. The neocortex inhibited the emotional avoidance reaction in proestrus and facilitated it in estrus. The left hemisphere dominated in inhibition and the right hemisphere prevailed in activatory influence.

Animals↗
PubMedDate not supplied

[Characteristics of the stability of functional interhemispheric asymmetry in the cat visual cortex].

A study of EP topography in the cat visual cortex has shown that initial functional interhemispheric asymmetry may be reduced and replaced by symmetry through long and frequent binocular stimulation. Section of the callosal body produced an inversion of one hemisphere dominance. In the callosotomized animals binocular stimulation enhanced the asymmetry. It is more stable in the cat visual cortex than in rats.

Animals↗