[Parameters of the functional state of the nervous system and of behavioral characteristics in relation to their hereditary causality in inbred mice. II. Correlation of the threshold of neuromuscular excitation with behavioral indices in mice].

The existence of reliable negative connection between the threshold of nervous-muscle excitability and the short-term motor activity defined in the shuttle box is demonstrated in 7 inbred strains of mice: C57Br/cdJ, SEC/1ReJ, BALB/cJ, DBA/2J, CBA/J, C57BL/6J, C3H/HeJ by means of comparative genetic and correlation analyses. Based on the experimental data, arguments are given that the excitability of nervous-muscle apparatus is connected not only with the motor activity itself, but with the orientation-exploring reaction, which takes place under unknown situation at the very beginning of the experiment. The comparison of the results obtained with the literary data leads to the conclusion about the existence of a positive correlation between excitability and viability to learning.