[Effect of stimulation of the thalamic reticular nucleus on the neuronal activity of the associative and nonspecific structures of the thalamus].

Neuronal responses in center median, medial dorsal and posterior lateral nuclei to the stimulations of n. reticularis were studied in restrained cats. 53.

[Study of thalamic input in the motor area of the cat cortex by means of retrograde axonal transport of horseradish peroxidase].

HRP-labelled neurons were studied in different thalamic nuclei projected to anterior pericruciate motor cortex of cats. Considerable concentrations of labelled cells were found in the rostral parts of relay nuclei (VL, VPL, VPM). A local type of distribution of such neurons in the associative MD nucleus was discovered as well.

[Convergence and interaction of somatic and visceral inputs in the neurons of the ventral posterolateral nucleus of the thalamus].

Unit activity and field potentials recorded in the cat thalamic VPL nucleus in the radial and splanchnic nerves stimulations, revealed a distinct preference in localization of responses in the mediocentral and centrolateral areas of the nucleus, as well as similarities and differences in the patterns of responses to different types of stimulation. The convergence (particularly during long-latency responses) mostly occurred in the central areas. Inhibitory character of interactions between somato-visceral stimulations was more obvious during conditioned stimulation of the radial nerve.

[Electrophysiologic study of somatic representation in Cavia cobaya guinea pig thalamus].

The effects of stimulation of the sciatic nerve and ipsilateral thalamic parafascicular nucleus on the thalamic posterior nucleus have been investigated by recording both the evoked potentials (EP) and neuronal activity in guinea pigs under light chloralose or nembutal anaesthesia. Animals were immobilized by d-tubocurarine and kept under artificial respiration. Widely spread EP to sciatic stimulation were recorded with a latency of about 10-60 ms.