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Biomedical subjects

V Mihalik

Publications and source records attributed to V Mihalik.

9 recordsLinked to original sources
PubMed1992

Vestibular system galvanization in man: the effect of stimulation field changes on the angle of body mass centre displacement.

During monopolar monoaural galvanization the absolute value of body mass centre displacement angle did not depend on the stimulation electrode position. The angle value was always close either to 0 degrees or to 180 degrees (i.e. in the latero-lateral direction). However, some fine angle differences between different electrode positions occurred and they were statistically significant in two cases. During monoaural bipolar stimulation the body mass centre moved practically in all directions (for all four used electrode positions) and the angles formed a more or less coherent rosette in the range of 0 degrees-360 degrees.

Acoustic Stimulation↗
PubMed1990

Analysis of reaching in the rat by the continuous movement monitoring, utilizing the law of magnetic induction.

Successful and unsuccessful reaching attempts in rats were analysed with the aim of resolving the question of the programming of reaching movement. The course of movement was monitored continuously by a method based on the law of magnetic induction. The study of reaching showed that the forelimb extension had the same time course characteristics in both cases of reaching attempts and displayed features of preprogrammed ballistic movement. The course of the consecutive phases (grasping, forelimb flexion) showed differences between successful and unsuccessful attempts and also between individual successful attempts. The variability of the course of grasping and forelimb flexion indicates that a peripheral feedback participates in regulation of its performance and that the information on grasping the pellet is decisive for the subsequent performance of reaching. Reaching as a whole cannot be considered as a preprogrammed ballistic movement, but some of its components correspond to this pattern.

Animals↗
PubMed1989

Continual monitoring of reaching in rat using magnetic induction law.

A method enabling the continual monitoring of movement has been developed based on the law of magnetic induction. The method was concretely applied in the handedness model of the rat. A sensing loop was implanted under the forearm skin of a rat. Electric voltage was induced by the movement of the sensing loop in a DC magnetic field. This voltage is proportional to the movement velocity and its polarity to the direction. The continuous character of the movement record allows convenient analysis and a more exact correlation with the bioelectric concomitants of the movement.

Animals↗