[Post-stroke depression].

In recent years, post-stroke depression (PSD) has attracted a worldwide interest. This review addresses the major research issues of PSD. PSD is the most frequent psychic complication among stroke survivors.

[Pathological aspects of post-stroke muscle tone disorder: clinical-neuro-visual study].

We studied how different patterns of muscle tone disorders depend upon lesion site using CT. 111 patients not earlier 3 months after hemispheric stroke were studied. We showed the degree of spasticity to be determined by depth of hemispheric damage in relation to posterior limb of capsula intema.

[A new classification of the motor disorders in patients who have had a cerebral stroke].

A new classification of motor disorders in patients after brain hemisphere's stroke as well as with its sequelae was proposed on the basis of clinical electromyographic studies. The classification validity was confirmed by mathematic statistic methods. The classification was composed of motor syndromes and is based on the following criteria: the severity of paresis, the correlation between gravity of paresis of the upper and lower limbs, muscular spasticity, alteration of integral estimation of active movements (the motor algorithm).

[The weakening of the inhibition of the H-reflex in patients who have had a stroke and its relation to spasticity of the skeletal musculature].

Inhibition of the soleus H-reflex was studied in hemiparetic postapoplectic patients and in control group of patients without motor disorders. The depression of H-reflex was caused by stimulation of ipsilateral peroneal nerve and presented in two successive waves (D1 and D2). The former of them corresponds to presynaptic inhibition.

[Relationship between decreased presynaptic inhibition and muscle spasticity in patients with a history of cerebral insult].

Stimulation electromyography was used to study inhibition of the soleus muscle H-reflex induced by stimulation of the common peroneal nerve in healthy individuals and in patients who had underwent cerebral apoplexy. Two successive inhibition waves (D1 and D2) were recorded; the first wave demonstrated the development of presynaptic inhibition of group Ia afferent fibers. In post-insult patients the depth of inhibition diminished depending on the degree of the pathologic increase of the tonus of the skeletal musculature.

[Homosynaptic depression of the monosynaptic spinal reflex in healthy people and patients, suffering from a cerebral stroke].

Homosynaptic depression of H-reflex was studied in 25 healthy persons and 33 patients with hemiplegia. The mean duration of the homosynaptic depression in healthy persons was 5200 ms. After the initial relative facilitation the time course of the homosynaptic depression corresponded to a logarithmic function of the interval between the conditioning and testing stimuli.

[Tonic inhibitory effect of the cat brain on spinal interneurons].

Cord dorsum potentials were recorded in the acute experiments on cats. The relationship between the N-component of the cord dorsum potentials and the strength of stimulation of the big femoral nerve was studied. After the transsection of the half of midbrain tegmentum the increased curve slope indicating the rise in cord interneuron excitability was mainly observed on the contralateral side.